Tokuyama Corporation

Japan

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[Owner] Tokuyama Corporation 1,435
Figaro Engineering Inc. 42
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New (last 4 weeks) 14
2025 December (MTD) 13
2025 November 1
2025 October 16
2025 September 8
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IPC Class
G02B 5/23 - Photochromic filters 115
G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses 103
C09K 9/02 - Organic tenebrescent materials 93
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics 54
C01B 33/035 - Preparation by decomposition or reduction of gaseous or vaporised silicon compounds other than silica or silica-containing material by decomposition or reduction of gaseous or vaporised silicon compounds in the presence of heated filaments of silicon, carbon or a refractory metal, e.g. tantalum or tungsten, or in the presence of heated silicon rods on which the formed silicon is deposited, a silicon rod being obtained, e.g. Siemens process 49
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NICE Class
05 - Pharmaceutical, veterinary and sanitary products 130
01 - Chemical and biological materials for industrial, scientific and agricultural use 50
10 - Medical apparatus and instruments 38
09 - Scientific and electric apparatus and instruments 19
03 - Cosmetics and toiletries; cleaning, bleaching, polishing and abrasive preparations 15
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Status
Pending 183
Registered / In Force 1,299
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1.

Poresphil

      
Application Number 1892020
Status Registered
Filing Date 2025-11-13
Registration Date 2025-11-13
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ?
  • 01 - Chemical and biological materials for industrial, scientific and agricultural use
  • 03 - Cosmetics and toiletries; cleaning, bleaching, polishing and abrasive preparations

Goods & Services

Precipitated silica; fumed silica; synthetic amorphous silica; oxides; silicates; inorganic salts for industrial purposes; anhydrides; chemical fillers for plastics; chemical fillers for inks and paints; chemical fillers for resins; industrial fillers; chemical fillers for column chromatography; chemical additives for use in the manufacture of cosmetics; chemical preparations for use in the manufacture of cosmetics; chemical preparations for use in the manufacture of semiconductors; chemical preparations for use in industry; chemicals for use in the manufacture of abrasive preparations; chemicals as carriers for catalyst production; industrial chemicals. Cosmetics; abrasive preparations for use in the manufacture of semiconductors.

2.

HEXAGONAL BORON NITRIDE POWDER, METHOD FOR PRODUCING SAME, AND RESIN COMPOSITION

      
Application Number JP2025017962
Publication Number 2025/258328
Status In Force
Filing Date 2025-05-19
Publication Date 2025-12-18
Owner TOKUYAMA CORPORATION (Japan)
Inventor Hamasaka, Go

Abstract

In order to provide a hexagonal boron nitride powder which enables the achievement of a resin composition having low frequency dependence of dielectric loss tangent in a high frequency band if filled into a resin as a filler so as to obtain the resin composition, a hexagonal boron nitride powder according to the present disclosure is characterized by having a median diameter D50 of 1-10 µm and a specific surface area of 1-10 m29110109191 that are respectively measured at the frequency of 10 GHz and the frequency of 91 GHz is 1.4 or less.

IPC Classes  ?

  • C01B 21/064 - Binary compounds of nitrogen with metals, with silicon, or with boron with boron
  • C08K 3/38 - Boron-containing compounds
  • C08L 101/00 - Compositions of unspecified macromolecular compounds

3.

Echilsil

      
Application Number 1892986
Status Registered
Filing Date 2025-11-13
Registration Date 2025-11-13
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ?
  • 01 - Chemical and biological materials for industrial, scientific and agricultural use
  • 03 - Cosmetics and toiletries; cleaning, bleaching, polishing and abrasive preparations

Goods & Services

Precipitated silica; fumed silica; synthetic amorphous silica; oxides; silicates; inorganic salts for industrial purposes; anhydrides; chemical fillers for plastics; chemical fillers for inks and paints; chemical fillers for resins; industrial fillers; chemical fillers for column chromatography; chemical additives for use in the manufacture of cosmetics; chemical preparations for use in the manufacture of cosmetics; chemical preparations for use in the manufacture of semiconductors; chemical preparations for use in industry; chemicals for use in the manufacture of abrasive preparations; chemicals as carriers for catalyst production; industrial chemicals. Cosmetics; abrasive preparations for use in the manufacture of semiconductors.

4.

HEXAGONAL BORON NITRIDE POWDER, RESIN SHEET, RESIN COMPOSITION, AND METHOD FOR PRODUCING HEXAGONAL BORON NITRIDE POWDER

      
Application Number JP2025014882
Publication Number 2025/253785
Status In Force
Filing Date 2025-04-16
Publication Date 2025-12-11
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Masada, Isao
  • Daiki, Shota

Abstract

The present invention realizes a hexagonal boron nitride powder having a good thermal conductivity. This hexagonal boron nitride powder contains aggregated particles of primary particles, has an average particle size of 15-80 µm, and exhibits a ratio (second intensity/first intensity) of not more than 1.0 for a second intensity indicating the maximum emission intensity at a wavelength of 250-440 nm with respect to a first intensity indicating the maximum emission intensity at a wavelength of not more than 235 nm, when being subjected to a cathodoluminescence measurement. The average area circularity of the aggregated particles having an area circle equivalent diameter of 20-40 µm is 0.20-0.50.

IPC Classes  ?

  • C01B 21/064 - Binary compounds of nitrogen with metals, with silicon, or with boron with boron
  • C08K 3/38 - Boron-containing compounds
  • C08L 101/00 - Compositions of unspecified macromolecular compounds

5.

SILICA AEROGEL POWDER, PRODUCTION METHOD THEREFOR, AND USE THEREOF

      
Application Number JP2025019006
Publication Number 2025/253969
Status In Force
Filing Date 2025-05-27
Publication Date 2025-12-11
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Taniguchi, Takashi
  • Kinoshita, Toya
  • Sando, Mitsuyoshi
  • Fukuju, Tadahiro

Abstract

[Problem] To provide a spherical silica aerogel powder exhibiting a high oil absorption, and a production method therefor. [Solution] The silica aerogel powder is characterized by comprising hydrophobic spherical silica aerogel and having a) a volume-based cumulative 50% diameter (D50) value of 1-200 μm in terms of particle size distribution measured by a laser diffraction/scattering method, b) a specific surface area of 400-1,000 m2/g based on the BET method, and c) an oil absorption of 850-1,300 ml/100 g. The production method is characterized in that the moisture content of an undried gelled body is 10% or less.

IPC Classes  ?

  • C01B 33/158 - PurificationDryingDehydrating
  • A61K 8/02 - Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K 8/25 - SiliconCompounds thereof
  • A61Q 1/00 - Make-up preparationsBody powdersPreparations for removing make-up
  • A61Q 19/00 - Preparations for care of the skin
  • F16L 59/02 - Shape or form of insulating materials, with or without coverings integral with the insulating materials

6.

METHOD FOR DESIGNING COMPOUNDING PROPORTION FOR GEOPOLYMER COMPOSITION, METHOD FOR PRODUCING GEOPOLYMER CONCRETE, AND METHOD FOR PRODUCING SECONDARY PRODUCT MADE OF GEOPOLYMER CONCRETE

      
Application Number JP2025018342
Publication Number 2025/253902
Status In Force
Filing Date 2025-05-21
Publication Date 2025-12-11
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Tokimasa Ukyo
  • Onishi Takahiro

Abstract

Provided is a method for designing a compounding proportion for a geopolymer composition, the method being for producing a geopolymer composition that has desired compressive strength levels at given concrete ages. The method comprises (1) using a given geopolymer material to obtain relationships between water/geopolymer material ratios and compressive strength levels of the cured geopolymer objects at given concrete ages, and determining, from the relationships, a water/geopolymer material ratio which brings about desired compressive strength levels at the given concrete ages.

IPC Classes  ?

7.

SILICONE COMPOSITION AND POLYSILOXANE COMPOUND

      
Application Number JP2025019315
Publication Number 2025/253997
Status In Force
Filing Date 2025-05-28
Publication Date 2025-12-11
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Sakamoto, Atsushi
  • Sanagawa, Atsushi

Abstract

Provided are a silicone composition and a polysiloxane compound which make it possible to suppress an increase in the hardness of the silicone composition when left for a long period of time at a high temperature. A silicone composition according to the present invention comprises: (A) a linear organopolysiloxane having one structure of a metal salt of a dicarboxylic acid at a main-chain terminal thereof; (B) a filler; and (C) a silicone resin.

IPC Classes  ?

  • C08L 83/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
  • C08G 77/398 - Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon containing boron or metal atoms
  • C08K 3/013 - Fillers, pigments or reinforcing additives
  • H01L 23/36 - Selection of materials, or shaping, to facilitate cooling or heating, e.g. heat sinks
  • H01L 23/373 - Cooling facilitated by selection of materials for the device

8.

PARTITION WALL FOR ELECTROLYTIC CELL, PARTITION WALL ASSEMBLY, AND ELECTROLYTIC CELL

      
Application Number JP2025020140
Publication Number 2025/254131
Status In Force
Filing Date 2025-06-04
Publication Date 2025-12-11
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Noriyasu, Yusuke
  • Tanaka, Yasuyuki

Abstract

Provided is a partition wall for an electrolytic cell, the partition wall partitioning the electrolytic cell into an anode chamber and a cathode chamber and being capable of suppressing generation of gas accumulation even when recesses are formed therein. A partition wall 8 of an electrolytic cell has a first main surface 20 and a second main surface 22 positioned opposite to the first main surface 20. The first main surface 20 includes a first flat part 24 and a plurality of first recesses 36 recessed with respect to the first flat part 24. Edges 40 of the first recesses 36 are rounded. The second main surface 22 includes a second flat part 30 and a plurality of second recesses 42 recessed with respect to the second flat part 30. Edges 46 of the second recesses 42 are rounded.

IPC Classes  ?

  • C25B 13/02 - DiaphragmsSpacing elements characterised by shape or form
  • C25B 9/00 - Cells or assemblies of cellsConstructional parts of cellsAssemblies of constructional parts, e.g. electrode-diaphragm assembliesProcess-related cell features

9.

METHOD FOR MANUFACTURING SILICON ROD

      
Application Number 19267943
Status Pending
Filing Date 2025-07-14
First Publication Date 2025-12-04
Owner TOKUYAMA CORPORATION (Japan)
Inventor Kawaguchi, Kazuhiro

Abstract

A rod-shaped body (10) is used to lift a cover (103) so as to detach the cover from a bottom plate (101), together with which the cover (103) forms a reactor (100). The rod-shaped body (10) includes a first part (11) to be inserted into a bottom plate-side hole (102a) provided in a surrounding area of the bottom plate (101) and a second part (12) to be inserted into a cover-side hole (104a) disposed in a surrounding area of the cover (103) so as to face the bottom plate-side hole (102a).

IPC Classes  ?

  • C01B 33/035 - Preparation by decomposition or reduction of gaseous or vaporised silicon compounds other than silica or silica-containing material by decomposition or reduction of gaseous or vaporised silicon compounds in the presence of heated filaments of silicon, carbon or a refractory metal, e.g. tantalum or tungsten, or in the presence of heated silicon rods on which the formed silicon is deposited, a silicon rod being obtained, e.g. Siemens process
  • H10F 71/00 - Manufacture or treatment of devices covered by this subclass

10.

GEOPOLYMER COMPOSITION

      
Application Number JP2025018341
Publication Number 2025/249263
Status In Force
Filing Date 2025-05-21
Publication Date 2025-12-04
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Onishi Takahiro
  • Tokimasa Ukyo

Abstract

Provided is a geopolymer composition comprising a powder component, water, and an alkali source, wherein the powder component comprises at least any one of a blast furnace slag fine powder and fly ash, the alkali source comprises at least an alkali silicate salt, the molar ratio of alkali metal ions contained in the alkali source to the water, i.e., AL/W, is less than 0.100, and the molar ratio of silicon ions contained in the alkali source to the water, i.e., Si/W, is 0.035-0.085.

IPC Classes  ?

  • C04B 28/26 - Silicates of the alkali metals
  • C04B 12/04 - Alkali metal or ammonium silicate cements
  • C04B 18/08 - Flue dust
  • C04B 18/14 - Waste materialsRefuse from metallurgical processes
  • C04B 22/10 - Acids or salts thereof containing carbon in the anion, e.g. carbonates

11.

POLYVINYL CHLORIDE FIBER, FABRIC INCLUDING SAID POLYVINYL CHLORIDE FIBER, METHOD FOR PRODUCING POLYVINYL CHLORIDE FIBER, AND ION EXCHANGE MEMBRANE

      
Application Number JP2025019395
Publication Number 2025/249496
Status In Force
Filing Date 2025-05-28
Publication Date 2025-12-04
Owner
  • TOKUYAMA CORPORATION (Japan)
  • SHINSHU UNIVERSITY (Japan)
Inventor
  • Goto, Yasuo
  • Nakazawa, Yuto
  • Aoki, Takuma
  • Mishima, Yu
  • Tsunoda, Dai
  • Isomura, Takenori
  • Oda, Kengo

Abstract

The present invention addresses the problem of providing: a polyvinyl chloride fiber that has suitable adhesiveness to an ion exchange resin when used as a base material of an ion exchange membrane, has high strength, is not brittle when used in an ion exchange membrane, and in which shrinkage is minimized when immersed in a monomer; and a method for producing a polyvinyl chloride fiber in which there is no risk of fire due to vaporization of an organic solvent at a high temperature and no issues involving the leakage of harmful substances into the atmosphere. The present invention is a polyvinyl chloride fiber having a crystallinity of 10%-60% and a styrene impregnation amount of 20-60 wt% when immersed in styrene and polymerized. The present invention is also a method for producing a polyvinyl chloride fiber comprising a discharge step in which a polyvinyl chloride solution is discharged into a coagulation bath, wherein the coagulation bath contains a solution that does not dissolve polyvinyl chloride and makes it possible to clean an organic solvent included in the polyvinyl chloride solution.

IPC Classes  ?

  • D01F 6/10 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of halogenated hydrocarbons from polyvinyl chloride or polyvinylidene chloride
  • B01D 69/10 - Supported membranesMembrane supports
  • C08J 5/22 - Films, membranes or diaphragms
  • D03D 15/283 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres

12.

CORE-SHELL PARTICLE, METHOD FOR PRODUCING HOLLOW PARTICLE, CORE-SHELL PARTICLE, AND HOLLOW PARTICLE

      
Application Number JP2025019583
Publication Number 2025/249535
Status In Force
Filing Date 2025-05-30
Publication Date 2025-12-04
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Fujioka, Masanari
  • Watanabe, Satoshi
  • Mochizuki, Naoto

Abstract

In order to produce core-shell particles and hollow particles having a sharp particle size distribution by suppressing the generation of solid particles and also suppressing particle aggregation and coalescence, this method for producing core-shell particles according to one embodiment of the present disclosure involves mixing an oil phase containing a hydrophobic organic solvent and a metal alkoxide into an aqueous phase comprising water and/or a hydrophilic organic solvent while in the presence of a surfactant, forming an O/W emulsion, and producing core-shell particles having a solvent as a core and a metal oxide as a shell.

IPC Classes  ?

  • C01B 33/18 - Preparation of finely divided silica neither in sol nor in gel formAfter-treatment thereof

13.

SILICONE RESIN COMPOSITION

      
Application Number JP2025017477
Publication Number 2025/249161
Status In Force
Filing Date 2025-05-14
Publication Date 2025-12-04
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Sanagawa, Atsushi
  • Sakamoto, Atsushi

Abstract

This silicone resin composition contains a silicone resin, a hexagonal boron nitride filler, and a thermally conductive filler other than the hexagonal boron nitride filler. The hexagonal boron nitride filler has a volume-based median pore diameter, as measured by mercury intrusion porosimetry, of 0.5-4.0 μm. The thermally conductive filler has a D50 value of 0.01-0.8 μm. The packing ratio of the hexagonal boron nitride filler is 30 vol.% or more. The overall packing ratio of the hexagonal boron nitride filler and the thermally conductive filler is 50 vol.% or more.

IPC Classes  ?

14.

LAYERED BODY, OPTICAL ARTICLE, LENS, AND SPECTACLES

      
Application Number 18993219
Status Pending
Filing Date 2023-07-05
First Publication Date 2025-11-20
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Shimizu, Yasutomo
  • Mori, Katsuhiro

Abstract

The purpose of the present invention is to provide: a layered body having excellent adhesion to an optical element base material and excellent shape stability; and an optical article, a lens, and spectacles that include such layered body. According to this embodiment, a layered body is provided. The layered body comprises: a first base material and a second base material; an adhesion layer; and a coating layer. The first and second base materials include a polyvinyl alcohol resin. The adhesion layer is interposed between the first base material and the second base material and adheres these base materials. The coating layer contains a resin and covers at least a portion of the surface of the first base material and/or the second base material. The resin contains at least one type selected from the group consisting of an epoxy resin, a urethane resin, and an acrylic resin.

IPC Classes  ?

  • G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses

15.

METHOD FOR PRODUCING HIGH-PURITY HYDROCHLORIC ACID

      
Application Number 18873058
Status Pending
Filing Date 2023-05-18
First Publication Date 2025-10-30
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Mochizuki, Naoto
  • Tanaka, Ryuma
  • Saito, Akihiro

Abstract

The present invention provides a method including bringing hydrogen chloride gas into gas-liquid contact with crude hydrochloric acid that has a hydrogen chloride concentration of less than the saturation value and that contains low-boiling-point impurities, suitably at least one selected from hydrogen, nitrogen, oxygen, methane, ethylene, and acetylene, wherein the gas-liquid contact of the hydrogen chloride gas is further continued after the hydrogen chloride concentration reaches the saturation value until an excess amount of 0.1% or more of the mass of the saturated hydrochloric acid has been subjected to the contact treatment.

IPC Classes  ?

16.

COMPOSITION CONTAINING GA OR GA ALLOY AND ALUMINUM NITRIDE FILLER

      
Application Number JP2025014734
Publication Number 2025/220655
Status In Force
Filing Date 2025-04-15
Publication Date 2025-10-23
Owner TOKUYAMA CORPORATION (Japan)
Inventor Sakamoto, Atsushi

Abstract

Al-OAl-NAl-OAl-NAl-N) corresponding to an Al-N bond is 0.3 or more. According to the present invention, it is possible to provide a composition which contains Ga or a Ga alloy and aluminum nitride and comprises high fluidity.

IPC Classes  ?

  • C22C 32/00 - Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
  • C01B 21/072 - Binary compounds of nitrogen with metals, with silicon, or with boron with aluminium
  • C22C 28/00 - Alloys based on a metal not provided for in groups
  • C22C 29/16 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on nitrides
  • H01L 23/36 - Selection of materials, or shaping, to facilitate cooling or heating, e.g. heat sinks

17.

METAL OXIDE-ATTACHED HEXAGONAL BORON NITRIDE PARTICLES, POWDER CONTAINING PARTICLES, RESIN COMPOSITION CONTAINING PARTICLES, RESIN SHEET, METAL WIRING BOARD, AND METHOD FOR PRODUCING PARTICLES

      
Application Number JP2025013690
Publication Number 2025/216175
Status In Force
Filing Date 2025-04-03
Publication Date 2025-10-16
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Daiki, Shota
  • Kakigi, Tomoyuki

Abstract

Provided are metal oxide-attached hexagonal boron nitride particles which, when used as a filler, can suppress an increase in the viscosity of a resin composition and can increase the thermal conductivity of the resin composition, and when used in a metal wiring board, can improve the peel strength from a metal layer. The metal oxide-attached hexagonal boron nitride particles are hexagonal boron nitride particles in which a metal oxide is attached to the surface of the particles, wherein the area coverage of the metal oxide on the basal plane of the hexagonal boron nitride particles is 10% or less, and the area coverage of the metal oxide on the prismatic plane of the hexagonal boron nitride particles is 30% or more.

IPC Classes  ?

  • C01B 21/064 - Binary compounds of nitrogen with metals, with silicon, or with boron with boron
  • C08K 3/22 - OxidesHydroxides of metals
  • C08K 3/38 - Boron-containing compounds
  • C08K 7/00 - Use of ingredients characterised by shape
  • C08L 101/00 - Compositions of unspecified macromolecular compounds
  • H05K 1/03 - Use of materials for the substrate

18.

METHOD FOR PRODUCING HYDROXYBIOTIN DERIVATIVE AND VINYLBIOTIN DERIVATIVE

      
Application Number JP2025013754
Publication Number 2025/216186
Status In Force
Filing Date 2025-04-04
Publication Date 2025-10-16
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Hayashi Tatsuru
  • Mori Hiroyuki
  • Matsuura Keisuke

Abstract

The purpose of the present invention is to provide a method for producing a hydroxybiotin derivative and a vinylbiotin derivative with which it is possible to carry out, in a smooth and highly efficient manner, a coupling reaction between a thiolactone derivative and a zinc reagent containing a halogen atom other than an iodine atom by using an inexpensive metal catalyst. The present invention provides a method for producing a hydroxybiotin derivative, the method including a step for bringing a thiolactone derivative represented by formula (1) into contact with a zinc reagent represented by formula (2) in the presence of a copper catalyst and an amine compound, thereby obtaining a hydroxybiotin derivative represented by formula (3).

IPC Classes  ?

19.

METHOD FOR PRODUCING HALOGEN OXYACID SOLUTION

      
Application Number 19244517
Status Pending
Filing Date 2025-06-20
First Publication Date 2025-10-09
Owner Tokuyama Corporation (Japan)
Inventor
  • Negishi, Takayuki
  • Shimoda, Takafumi
  • Saito, Akihiro
  • Matsuda, Naoki
  • Moriwaki, Masayuki

Abstract

A method for producing halogen oxyacid, which includes a step of continuously supplying and mixing an organic alkali solution and a halogen and continuously collecting a reaction solution containing halogen oxyacid, and an production apparatus of halogen oxyacid, which includes a reactor, a means of supplying an organic alkali solution to the reactor, a means of supplying a halogen to the reactor, and a means of collecting a reaction solution for taking out the reaction solution from the reactor, in which the organic alkali solution and the halogen are continuously supplied by the means of supplying an organic alkali solution and the means of supplying a halogen, respectively, to the reactor so as to be mixed therein such that a solution containing halogen oxyacid is generated as a reaction solution, and the reaction solution is continuously collected by the means of collecting a reaction solution are provided.

IPC Classes  ?

  • C01B 11/04 - Hypochlorous acid
  • C07C 209/68 - Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton

20.

LAMINATE, OPTICAL ARTICLE, LENS, AND SPECTACLES

      
Application Number JP2025011992
Publication Number 2025/211220
Status In Force
Filing Date 2025-03-26
Publication Date 2025-10-09
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Hashimoto Yusuke
  • Shimizu Yasutomo
  • Hiraren Toshimitsu
  • Fukuda Kazuishi

Abstract

Provided is a laminate comprising: an optical substrate; a functional layer that is positioned on the optical substrate and contains a functional dye and a resin; and a protective layer that covers at least a portion of the functional layer, has a thickness of at least 0.3 μm and less than 5 μm as measured by scanning microscope observation, and contains at least one resin selected from the group consisting of thermosetting urethane resins, thermosetting urea resins, thermosetting urethane urea resins, epoxy resins, and (meth)acrylic resins. Also provided are: an optical article including the laminate; a lens; and spectacles.

IPC Classes  ?

  • G02B 1/14 - Protective coatings, e.g. hard coatings
  • B32B 27/00 - Layered products essentially comprising synthetic resin
  • G02B 5/23 - Photochromic filters
  • G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses

21.

CURABLE COMPOSITION FOR FORMING PROTECTIVE LAYER, LAMINATE, OPTICAL ARTICLE, LENS, AND EYEGLASSES

      
Application Number JP2025011993
Publication Number 2025/211221
Status In Force
Filing Date 2025-03-26
Publication Date 2025-10-09
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Hashimoto Yusuke
  • Shimizu Yasutomo
  • Hiraren Toshimitsu
  • Fukuda Kazuishi

Abstract

Provided is a curable composition for forming a protective layer, the curable composition containing: a first blocked isocyanate that has two or more isocyanate groups protected by a blocking agent and has a relative molecular mass, excluding the blocking agent, of 1500 or less; and an active hydrogen group-containing compound that has two or more active hydrogen groups and has a relative molecular mass of 300 or less. Also provided are: a laminate including a protective layer obtained from the curable composition for forming a protective layer; an optical article; a lens; and spectacles.

IPC Classes  ?

  • G02B 1/14 - Protective coatings, e.g. hard coatings
  • B32B 27/40 - Layered products essentially comprising synthetic resin comprising polyurethanes
  • C08G 18/16 - Catalysts
  • C08G 18/22 - Catalysts containing metal compounds
  • C08G 18/24 - Catalysts containing metal compounds of tin
  • C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G 18/80 - Masked polyisocyanates
  • G02B 5/23 - Photochromic filters
  • G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses

22.

ESTECAD

      
Application Number 1879195
Status Registered
Filing Date 2025-08-28
Registration Date 2025-08-28
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ? 05 - Pharmaceutical, veterinary and sanitary products

Goods & Services

Material for dental crowns; material for dental bridges; materials for artificial teeth; materials for dental fillings; material for dental prostheses; dental composite materials; materials for tooth restoration; dental materials.

23.

ESTECAD BLOCK

      
Application Number 1879196
Status Registered
Filing Date 2025-08-28
Registration Date 2025-08-28
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ? 05 - Pharmaceutical, veterinary and sanitary products

Goods & Services

Material for dental crowns; material for dental bridges; materials for artificial teeth; materials for dental fillings; material for dental prostheses; dental composite materials; materials for tooth restoration; dental materials.

24.

ESTECAD DISC

      
Application Number 1879197
Status Registered
Filing Date 2025-08-28
Registration Date 2025-08-28
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ? 05 - Pharmaceutical, veterinary and sanitary products

Goods & Services

Material for dental crowns; material for dental bridges; materials for artificial teeth; materials for dental fillings; material for dental prostheses; dental composite materials; materials for tooth restoration; dental materials.

25.

HEXAGONAL BORON NITRIDE POWDER, METHOD FOR PRODUCING SAME, AND RESIN SHEET

      
Application Number JP2025007464
Publication Number 2025/204526
Status In Force
Filing Date 2025-03-03
Publication Date 2025-10-02
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Kakigi, Tomoyuki
  • Daiki, Shota

Abstract

The present disclosure provides hexagonal boron nitride powder capable of imparting high thermal conductivity and high dielectric withstand voltage with low variation to a resin composition. The hexagonal boron nitride powder according to the present disclosure comprises hexagonal boron nitride aggregated particles and hexagonal boron nitride single particles. The ratio of the boron nitride single particles to 100 parts by mass of the boron nitride aggregated particles is 20-60 parts by mass. In a volume-based particle size distribution curve, the particle diameter (D50) at which the cumulative value from the small particle diameter reaches 50% is in the range of 15-30 μm. The ratio (D90B/D90A) of the particle diameter (D90B) at which the cumulative value reaches 90% after processing with ultrasonic waves at 250 W for one minute using ethanol as a dispersant to the particle diameter (D90A) at which the cumulative value reaches 90% is 0.22-0.45.

IPC Classes  ?

  • C01B 21/064 - Binary compounds of nitrogen with metals, with silicon, or with boron with boron
  • C08K 3/38 - Boron-containing compounds
  • C08L 101/00 - Compositions of unspecified macromolecular compounds

26.

METHOD FOR PRODUCING ALKALINE EARTH METAL CARBONATE

      
Application Number JP2025012462
Publication Number 2025/206180
Status In Force
Filing Date 2025-03-27
Publication Date 2025-10-02
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Morimoto Tetsuro
  • Omura Kohei

Abstract

This method for producing an alkaline earth metal carbonate comprises: a step (I) for preparing a slurry containing a salt of a first organic amine and an acid forming a water-soluble salt with an alkaline earth metal, an alkaline earth metal-containing substance and water; a step (II) for subjecting the slurry prepared in the step (I) to solid-liquid separation to obtain a liquid component; a step (III) for bringing the liquid component obtained in the step (II) into contact with carbon dioxide to precipitate an alkaline earth metal carbonate; and a step (IV) for separating the alkaline earth metal carbonate precipitated in the step (III) from the liquid component. In the step (III), the liquid component obtained in the step (II) is brought into contact with carbon dioxide in the presence of a second organic amine.

IPC Classes  ?

  • C01F 11/18 - Carbonates
  • B09B 3/80 - Destroying solid waste or transforming solid waste into something useful or harmless involving an extraction step
  • B09B 101/30 - Incineration ashes
  • B09B 101/45 - Concrete

27.

METHOD FOR PRODUCING ALKALINE EARTH METAL CARBONATE

      
Application Number JP2025012464
Publication Number 2025/206182
Status In Force
Filing Date 2025-03-27
Publication Date 2025-10-02
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Morimoto Tetsuro
  • Omura Kohei
  • Seki Takuya

Abstract

This method for producing an alkaline earth metal carbonate includes: a step (I) for preparing a slurry containing an alkaline earth metal-containing substance, a salt of a first organic amine and an acid forming a water-soluble salt with an alkaline earth metal, a second organic amine, and water; a step (II) for subjecting the slurry prepared in the step (I) to solid-liquid separation to obtain a liquid component; a step (III) for bringing the liquid component obtained in the step (II) into contact with carbon dioxide to precipitate an alkaline earth metal carbonate; and a step (IV) for separating the alkaline earth metal carbonate precipitated in the step (III) from the liquid component, the method being characterized in that at least one of the first organic amine and the second organic amine is a tertiary amine.

IPC Classes  ?

  • C01F 11/18 - Carbonates
  • B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
  • B09B 3/80 - Destroying solid waste or transforming solid waste into something useful or harmless involving an extraction step
  • C01B 32/60 - Preparation of carbonates or bicarbonates in general
  • C04B 7/52 - Grinding
  • C04B 22/10 - Acids or salts thereof containing carbon in the anion, e.g. carbonates
  • C04B 24/12 - Nitrogen containing compounds

28.

METHOD FOR PRODUCING ELECTROLYTIC CELL UNIT AND ELECTROLYTIC CELL UNIT

      
Application Number 18849645
Status Pending
Filing Date 2023-03-01
First Publication Date 2025-10-02
Owner TOKUYAMA CORPORATION (Japan)
Inventor Matsui, Hitoshi

Abstract

There is provided a method for producing an electrolytic cell unit that can ensure improved welding quality. The method for producing an electrolytic cell unit includes: arranging a first rib 14 made of a first material, a first partition wall 12 made of the first material, a clad sheet 8 having a layer 8a of the first material and a layer 8b of the second material with lower electrical resistance than the first material, a second partition wall 28 made of the second material, and a second rib 30 made of a second material in this order, such that the first and second ribs 14, 30, the first and second partition walls 12, 28 and clad sheet 8 are arranged in this order; and joining the first and second ribs 14, 30, the first and second partition walls 12, 28, and the clad sheet 8 by resistance welding. The first rib 14 includes a first projection 64, and the second rib 30 includes a second projection 66. The first projection 64 and the second projection 66 vary in size.

IPC Classes  ?

  • C25B 9/01 - Electrolytic cells characterised by shape or form
  • B23K 11/14 - Projection welding
  • B23K 11/20 - Resistance weldingSevering by resistance heating taking account of the properties of the material to be welded of different metals
  • C25B 9/60 - Constructional parts of cells

29.

COMPOSITION, DRY REAGENT, AND METHOD FOR PRESERVING COMPOSITION

      
Application Number JP2025010447
Publication Number 2025/205239
Status In Force
Filing Date 2025-03-18
Publication Date 2025-10-02
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Kudo, Kazuki
  • Hanazawa, Natsumi
  • Takai, Risa
  • Watanabe, Shin
  • Kikuchi, Shigetoshi

Abstract

A composition according to one aspect of the present disclosure comprises: a reaction component which reacts with a target component that is contained in a biological sample and that is a target for measurement; trehalose; and water. The composition contains 0.2-90 wt% of trehalose and 1-30 wt% of water with respect to the total weight of the composition, and the weight of the water is not more than 5 times the weight of the trehalose.

IPC Classes  ?

  • C12N 9/96 - Stabilising an enzyme by forming an adduct or a compositionForming enzyme conjugates
  • C12Q 1/25 - Measuring or testing processes involving enzymes, nucleic acids or microorganismsCompositions thereforProcesses of preparing such compositions involving enzymes not classifiable in groups

30.

PRODUCTION METHOD FOR ALKALINE EARTH METAL CARBONATE

      
Application Number JP2025012463
Publication Number 2025/206181
Status In Force
Filing Date 2025-03-27
Publication Date 2025-10-02
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Morimoto Tetsuro
  • Omura Kohei

Abstract

A production method for an alkaline earth metal carbonate including a step (I) for preparing a slurry including an alkaline earth metal–containing substance, a salt of a first organic amine and an acid which forms a water-soluble salt with an alkaline earth metal, a second organic amine, and water, a step (II) for performing solid-liquid separation of the slurry prepared in step (I) to obtain a liquid component, a step (III) for putting the liquid component obtained in step (II) in contact with carbon dioxide to precipitate an alkaline earth metal carbonate, and a step (IV) for separating the alkaline earth metal carbonate precipitated in step (III) from the liquid component, said production method being characterized in that the pH of an aqueous solution of the second organic amine and the salt of the first organic amine and the acid which forms a water-soluble salt with an alkaline earth metal is 6.0 or greater.

IPC Classes  ?

  • C01F 11/18 - Carbonates
  • B09B 3/80 - Destroying solid waste or transforming solid waste into something useful or harmless involving an extraction step
  • C01B 32/60 - Preparation of carbonates or bicarbonates in general
  • B09B 101/30 - Incineration ashes
  • B09B 101/45 - Concrete

31.

HEXAGONAL BORON NITRIDE POWDER AND METHOD FOR PRODUCING THE SAME

      
Application Number 18860410
Status Pending
Filing Date 2023-04-20
First Publication Date 2025-09-25
Owner TOKUYAMA CORPORATION (Japan)
Inventor Aburatani, Makoto

Abstract

There is provided a hexagonal boron nitride powder, having: an average long diameter (L50) of 3 to 20 μm, an average thickness (T50) of 0.3 to 2 μm, a (L90−L10)/L50 of 2.0 or less, a (T90−T10)/T50 of 2.0 or less, and an average aspect ratio of 10 to 30; a dynamic friction coefficient (MIU) of 0.50 or less, and a deviation of the dynamic friction coefficient (MMD) of 0.0050 or less; and a specular reflection intensity of 80 or more as measured by a goniophotometer under a condition of an angle of incidence of 60° C.

IPC Classes  ?

  • C04B 35/583 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride
  • C04B 35/626 - Preparing or treating the powders individually or as batches

32.

ALUMINUM NITRIDE SINTERED SUBSTRATE, METHOD FOR PRODUCING SAME, AND INSULATING SUBSTRATE FOR ELECTRONIC CIRCUIT

      
Application Number JP2025000381
Publication Number 2025/197258
Status In Force
Filing Date 2025-01-08
Publication Date 2025-09-25
Owner
  • TOKUYAMA CORPORATION (Japan)
  • DOWA METALTECH CO., LTD. (Japan)
Inventor
  • Yamamoto Yasuyuki
  • Ishikawa Naoki
  • Osanai Hideyo
  • Kobayashi Koji
  • Yuki Seiya

Abstract

[Problem] To improve the partial discharge resistance of an insulating substrate for an electronic circuit that uses an aluminum nitride sintered substrate. [Solution] Provided is an aluminum nitride sintered substrate containing zirconium-containing particles therein, wherein the aluminum nitride sintered substrate has a composition in which the Zr/Al molar ratio is 0.0017-0.0665, and the region from the end surface in the thickness direction to at least a depth of 10.0 μm is a zirconium-deficient surface layer in which the number density of the zirconium-containing particles in a cross section parallel to the thickness direction is 6.0/540μm2 or less.

IPC Classes  ?

  • C04B 35/581 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on aluminium nitride
  • H01L 23/13 - Mountings, e.g. non-detachable insulating substrates characterised by the shape

33.

COMSIL

      
Application Number 1876493
Status Registered
Filing Date 2025-06-18
Registration Date 2025-06-18
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ? 01 - Chemical and biological materials for industrial, scientific and agricultural use

Goods & Services

Silicon dioxide; oxides; inorganic acids; silicates; inorganic salts for industrial purposes; thickening agents for use in the manufacture of inks; thickening agents for use in the manufacture of paints; chemical thickening agents for use in molding plastics; stability improving agents for industrial use; chemical stabilizers for industrial purposes; viscosity improving agents for industrial use; viscosity improvers for industrial purposes; fillers for use in adjusting viscosity and hardening strength of sealant; rubber processing preparations; chemical intensifiers for rubber; rubber preservatives; rubber modifiers; catalysts for use in the manufacture of rubber; chemical agents; chemicals for use in the production of synthetic rubber; chemicals for use in the processing of natural rubber; industrial chemicals.

34.

GATHESIL

      
Application Number 1874893
Status Registered
Filing Date 2025-06-18
Registration Date 2025-06-18
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ? 01 - Chemical and biological materials for industrial, scientific and agricultural use

Goods & Services

Silicon dioxide; oxides; inorganic acids; silicates; inorganic salts for industrial purposes; thickening agents for use in the manufacture of inks; thickening agents for use in the manufacture of paints; chemical thickening agents for use in molding plastics; stability improving agents for use in the manufacture of industrial products; viscosity improving agents for use in the manufacture of industrial products; fillers for use in adjusting viscosity and hardening strength of sealant; rubber processing preparations; chemical intensifiers for rubber; rubber preservatives; rubber modifiers; catalysts for use in the manufacture of rubber; chemical agents; chemicals for use in the production of synthetic rubber; chemicals for use in the processing of natural rubber; industrial chemicals.

35.

COLSIL

      
Application Number 1874896
Status Registered
Filing Date 2025-06-18
Registration Date 2025-06-18
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ? 01 - Chemical and biological materials for industrial, scientific and agricultural use

Goods & Services

Silicon dioxide; oxides; inorganic acids; silicates; inorganic salts for industrial purposes; thickening agents for use in the manufacture of inks; thickening agents for use in the manufacture of paints; chemical thickening agents for use in molding plastics; stability improving agents for use in the manufacture of industrial products; viscosity improving agents for use in the manufacture of industrial products; fillers for use in adjusting viscosity and hardening strength of sealant; rubber processing preparations; chemical intensifiers for rubber; rubber preservatives; rubber modifiers; catalysts for use in the manufacture of rubber; chemical agents; chemicals for use in the production of synthetic rubber; chemicals for use in the processing of natural rubber; industrial chemicals.

36.

METHOD FOR PRODUCING HIGH-PURITY TETRAALKYLAMMONIUM HYDROXIDE AQUEOUS SOLUTION

      
Application Number JP2025006290
Publication Number 2025/187470
Status In Force
Filing Date 2025-02-25
Publication Date 2025-09-11
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Honda, Shota
  • Kamikawa, Takamitsu
  • Saeki, Hoshito

Abstract

The present invention is a method for producing a tetraalkylammonium hydroxide aqueous solution by electrolyzing a tetraalkylammonium salt aqueous solution, wherein a tetraalkylammonium hydroxide aqueous solution having a reduced chloride ion concentration can be industrially produced efficiently by the content of tetraalkylammonium halide salts to the tetraalkylammonium salt in the tetraalkylammonium salt aqueous solution being 500 mass ppb or less.

IPC Classes  ?

  • C25B 3/09 - Nitrogen containing compounds
  • C25B 3/03 - Acyclic or carbocyclic hydrocarbons
  • C25B 9/00 - Cells or assemblies of cellsConstructional parts of cellsAssemblies of constructional parts, e.g. electrode-diaphragm assembliesProcess-related cell features

37.

ANION EXCHANGE MEMBRANE ROLL ARTICLE

      
Application Number JP2025007672
Publication Number 2025/187679
Status In Force
Filing Date 2025-03-04
Publication Date 2025-09-11
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Kamata, Kunio
  • Sugata, Masami
  • Fukutomi, Ryohei

Abstract

This anion exchange membrane roll article comprises a roll of an anion exchange membrane containing water, and an exterior material covering the roll of the anion exchange membrane, wherein: the anion exchange membrane has a ratio of the moisture content MC to the saturated moisture content SC at 20ºC of 10-50%; the exterior material has a water vapor permeability of at most 100 g/(m2∙day) at a temperature of 40ºC and a relative humidity of 90%; and the roll of the anion exchange membrane is sealed on the inner peripheral side from the exterior material.

IPC Classes  ?

  • B65D 85/672 - Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form on cores
  • B65D 81/22 - Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient in moist conditions or immersed in liquids
  • C08J 5/18 - Manufacture of films or sheets
  • C08J 5/22 - Films, membranes or diaphragms

38.

CURABLE COMPOSITION, CURED BODY, LAMINATE, OPTICAL ARTICLE, LENS, AND SPECTACLES

      
Application Number JP2025006230
Publication Number 2025/182863
Status In Force
Filing Date 2025-02-25
Publication Date 2025-09-04
Owner TOKUYAMA CORPORATION (Japan)
Inventor Miyazaki Masayuki

Abstract

The present disclosure provides: a curable composition capable of realizing a cured body that achieves photochromic compound performance and photochromic compound elution resistance; a cured body; a laminate; a lens; spectacles; and a photochromic optical article. A curable composition according to an embodiment includes a photochromic compound and a radically polymerizable monomer. The photochromic compound has a radically polymerizable substituent. The polymerizable monomer includes, in the amount of 50 mass% or more, a first (meth)acrylate that has a number average molecular weight of 600 or more and that comprises a polyalkylene glycol chain structure having a number average molecular weight of 250 or more and two or more (meth)acryloyl groups.

IPC Classes  ?

  • G02B 5/23 - Photochromic filters
  • C09K 9/02 - Organic tenebrescent materials
  • G02B 1/14 - Protective coatings, e.g. hard coatings
  • G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses

39.

ESTECAD

      
Application Number 242965800
Status Pending
Filing Date 2025-08-28
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ? 05 - Pharmaceutical, veterinary and sanitary products

Goods & Services

(1) Material for dental crowns; material for dental bridges; materials for artificial teeth; materials for dental fillings; material for dental prostheses; dental composite materials; materials for tooth restoration; dental porcelain materials; dental ceramics; dental alloys; dental wax; dental restoration compounds.

40.

ESTECAD DISC

      
Application Number 242966000
Status Pending
Filing Date 2025-08-28
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ? 05 - Pharmaceutical, veterinary and sanitary products

Goods & Services

(1) Material for dental crowns; material for dental bridges; materials for artificial teeth; materials for dental fillings; material for dental prostheses; dental composite materials; materials for tooth restoration; dental porcelain materials; dental ceramics; dental alloys; dental wax; dental restoration compounds.

41.

ESTECAD BLOCK

      
Application Number 242965900
Status Pending
Filing Date 2025-08-28
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ? 05 - Pharmaceutical, veterinary and sanitary products

Goods & Services

(1) Material for dental crowns; material for dental bridges; materials for artificial teeth; materials for dental fillings; material for dental prostheses; dental composite materials; materials for tooth restoration; dental porcelain materials; dental ceramics; dental alloys; dental wax; dental restoration compounds.

42.

ESTECAD

      
Serial Number 79434111
Status Pending
Filing Date 2025-08-28
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ? 05 - Pharmaceutical, veterinary and sanitary products

Goods & Services

Material for dental crowns; material for dental bridges; materials for artificial teeth; materials for dental fillings; material for dental prostheses; dental composite materials; materials for tooth restoration; dental porcelain materials; dental ceramics; dental alloys; dental wax; dental restoration compounds

43.

ESTECAD BLOCK

      
Serial Number 79434112
Status Pending
Filing Date 2025-08-28
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ? 05 - Pharmaceutical, veterinary and sanitary products

Goods & Services

Material for dental crowns; material for dental bridges; materials for artificial teeth; materials for dental fillings; material for dental prostheses; dental composite materials; materials for tooth restoration; dental porcelain materials; dental ceramics; dental alloys; dental wax; dental restoration compounds

44.

ESTECAD DISC

      
Serial Number 79434115
Status Pending
Filing Date 2025-08-28
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ? 05 - Pharmaceutical, veterinary and sanitary products

Goods & Services

Material for dental crowns; material for dental bridges; materials for artificial teeth; materials for dental fillings; material for dental prostheses; dental composite materials; materials for tooth restoration; dental porcelain materials; dental ceramics; dental alloys; dental wax; dental restoration compounds.

45.

CALCINATION METHOD FOR GYPSUM PARTICLES

      
Application Number JP2025002506
Publication Number 2025/177774
Status In Force
Filing Date 2025-01-28
Publication Date 2025-08-28
Owner TOKUYAMA CORPORATION (Japan)
Inventor Hiranaka Shingo

Abstract

The present invention, when gypsum particles derived from waste gypsum boards are calcined using a hot-air rotary calcinator, makes the calcined gypsum particles have a reduced gypsum dihydrate content. Gypsum particles obtained by crushing waste gypsum boards and made of gypsum dihydrate are calcined. The gypsum particles are supplied to a cylindrical rotating tank, and the gypsum particles are stirred by the rotation of the tank. Hot air is supplied to a pipe positioned at the axial-direction center of the tank and provided with a plurality of nozzles, and is blown from the nozzles into the gypsum particles, thereby converting the gypsum dihydrate in the gypsum particles into gypsum hemihydrate and/or III-form anhydrous gypsum. The peripheral speed of the inner wall of the rotating tank is in the range of 2-10 m/min. 

IPC Classes  ?

  • B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
  • B09B 3/35 - Shredding, crushing or cutting
  • C04B 11/036 - Devices therefor for the dry process, e.g. dehydrating in a fluidised bed or in a rotary kiln

46.

METHOD FOR CONVEYING POWDER/GRANULAR MATERIAL BY VERTICAL CIRCULATION BUCKET CONVEYOR

      
Application Number JP2025002507
Publication Number 2025/177775
Status In Force
Filing Date 2025-01-28
Publication Date 2025-08-28
Owner TOKUYAMA CORPORATION (Japan)
Inventor Hiranaka Shingo

Abstract

The present invention prevents powder/granular material from falling from a gap between a bucket and a casing-side discharge port of a conveyor when powder/granular material of low specific gravity is conveyed by a vertical circulation bucket conveyor. The vertical circulation bucket conveyor, in which a plurality of buckets are fixed to a chain and vertically circulated, conveys the powder and granular material vertically between a loading port and a discharge port provided in a casing of the bucket conveyor. A plate projecting from the discharge port toward the buckets is detachably attached to at least the discharge port so that the buckets intermittently come into contact with the plate. As a result, the gap between the discharge port and the buckets is reduced, and the powder/granular material accumulated on the plate is swept off toward the discharge port by the impact caused by the contact between the buckets and the plate. 

IPC Classes  ?

  • B65G 17/12 - Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriersEndless-chain conveyors in which the chains form the load-carrying surface comprising a series of individual load-carriers fixed, or normally fixed, relative to traction element

47.

METHOD OF RECOVERING PAPER SCRAP AND GYPSUM GRANULES FROM WASTE GYPSUM BOARD

      
Application Number JP2025002508
Publication Number 2025/177776
Status In Force
Filing Date 2025-01-28
Publication Date 2025-08-28
Owner TOKUYAMA CORPORATION (Japan)
Inventor Hiranaka Shingo

Abstract

In the present invention, when recovering paper scrap and gypsum granules from a waste gypsum board, the gypsum granules are separated from paper scrap while the generation of paper dust from pulverization is kept to a minimum. After having been crushed, the waste gypsum board is separated by means of a first sieve into over-sieve paper scrap and under-sieve components. The under-sieve components from the first sieve are pulverized by means of a pulverizer, and the under-sieve components having been pulverized by the pulverizer are sieved by means of a second sieve and are separated into over-sieve components composed of a mixture of paper scrap and gypsum granules, and under-sieve components composed of gypsum granules. The over-sieve components from the second sieve are fed onto a conveying surface of a belt conveyor, the conveying surface moving diagonally upward, and the paper scrap is conveyed upward along with the conveying surface of the belt conveyor and collected from the upper part of the belt conveyor, and the gypsum granules are caused to roll diagonally downward on the conveying surface and are collected from the lower part of the belt conveyor.

IPC Classes  ?

  • B09B 5/00 - Operations not covered by a single other subclass or by a single other group in this subclass
  • B02C 23/14 - Separating or sorting of material, associated with crushing or disintegrating with more than one separator
  • B07B 1/28 - Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting, or wobbling screens
  • B07B 13/11 - Grading or sorting solid materials by dry methods, not otherwise provided forSorting articles otherwise than by indirectly controlled devices using momentum effects involving travel of particles over surfaces which separate by centrifugal force or by relative friction between particles and such surfaces, e.g. helical sorters
  • B09B 3/35 - Shredding, crushing or cutting
  • B09B 101/85 - PaperWoodFabrics, e.g. cloths

48.

METHOD AND SYSTEM FOR STORING WASTE GYPSUM GRANULES

      
Application Number JP2025002509
Publication Number 2025/177777
Status In Force
Filing Date 2025-01-28
Publication Date 2025-08-28
Owner TOKUYAMA CORPORATION (Japan)
Inventor Hiranaka Shingo

Abstract

The present invention takes out a required amount of waste gypsum granules from a container by a belt conveyor without solidifying the same. In the present invention, waste gypsum granules derived from a waste plaster board are stored. The waste gypsum granules derived from a waste plaster board are charged into a container the bottom of which is the conveying surface of a belt conveyor. By continuously operating the belt conveyor, the waste gypsum granules are taken out of the container, a part of the same is carried out to the outside, and the remaining part is raised by another conveyor to be re-charged into the container in a continuous manner.

IPC Classes  ?

  • B02C 23/08 - Separating or sorting of material, associated with crushing or disintegrating
  • B09B 3/30 - Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
  • B09B 3/38 - Stirring or kneading
  • B65G 65/32 - Filling devices
  • B65G 65/34 - Emptying devices

49.

METHOD FOR PRODUCING AMORPHOUS SILICA PARTICLES, AMORPHOUS SILICA PARTICLES, COSMETIC CONTAINING SAME, AND SYSTEM FOR PRODUCING AMORPHOUS SILICA PARTICLES

      
Application Number JP2025003839
Publication Number 2025/173621
Status In Force
Filing Date 2025-02-06
Publication Date 2025-08-21
Owner
  • TOKUYAMA CORPORATION (Japan)
  • KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION (Japan)
Inventor
  • Oda, Kengo
  • Kobayakawa, Ryuta
  • Kudo, Shinji
  • Hayashi, Jun-Ichiro
  • Saito, Akihiro
  • Tanaka, Ryuma
  • Yoshida, Saki

Abstract

In order to achieve a production method for producing amorphous silica particles having a silica purity equal to or higher than that of the prior art in such a manner that the particle diameter is adjustable, a method for producing amorphous silica particles according to an aspect of the present disclosure comprises: a hot water treatment step for subjecting a plant-derived substrate to a hot water treatment; and a firing step for firing residues of the substrate obtained in the hot water treatment step.

IPC Classes  ?

  • C01B 33/18 - Preparation of finely divided silica neither in sol nor in gel formAfter-treatment thereof
  • A61K 8/25 - SiliconCompounds thereof

50.

SEMICONDUCTOR WAFER TREATMENT LIQUID CONTAINING HYPOCHLORITE IONS AND PH BUFFER

      
Application Number 19194593
Status Pending
Filing Date 2025-04-30
First Publication Date 2025-08-14
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Shimoda, Takafumi
  • Kikkawa, Yuki
  • Negishi, Takayuki
  • Tono, Seiji
  • Sato, Tomoaki

Abstract

A method for inhibiting the generation of a ruthenium-containing gas, the method comprising mixing an inhibitor for inhibiting the generation of a ruthenium-containing gas with a target liquid, wherein the inhibitor comprises the following (B) and (C): (B) a pH buffer; and (C) a tetraalkylammonium ion represented by the following formula (1): A method for inhibiting the generation of a ruthenium-containing gas, the method comprising mixing an inhibitor for inhibiting the generation of a ruthenium-containing gas with a target liquid, wherein the inhibitor comprises the following (B) and (C): (B) a pH buffer; and (C) a tetraalkylammonium ion represented by the following formula (1): A method for inhibiting the generation of a ruthenium-containing gas, the method comprising mixing an inhibitor for inhibiting the generation of a ruthenium-containing gas with a target liquid, wherein the inhibitor comprises the following (B) and (C): (B) a pH buffer; and (C) a tetraalkylammonium ion represented by the following formula (1): wherein each of R1, R2, R3 and R4 is independently an alkyl group having carbon number from 1 to 20, wherein the pH buffer (B) has a concentration of from 0.0001 to 10 mass %, and a pH at 25° C. of the treatment liquid is 9 or more and less than 13.

IPC Classes  ?

  • C09K 13/06 - Etching, surface-brightening or pickling compositions containing an inorganic acid with organic material
  • H01L 21/3213 - Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer

51.

CURABLE COMPOSITION, CURED BODY, LAMINATE, OPTICAL ARTICLE, LENS, AND EYEGLASSES

      
Application Number 18858184
Status Pending
Filing Date 2023-04-18
First Publication Date 2025-08-14
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Shimizu, Yasutomo
  • Mori, Katsuhiro

Abstract

A curable composition that makes it possible to provide a cured body exhibiting excellent adhesion to a substrate; a cured body thereof; and a laminate, an optical article, a lens, and spectacles that include said cured body. One feature of the present disclosure provides a curable composition. The curable composition contains a first monomer and at least one of a second monomer and an organosilicon compound. The first monomer has an allyl group. The second monomer has a polymerizable group and a first functional group. The polymerizable group is at least one type of group selected from the group consisting of an acryloyl group, a methacryloyl group, and a vinyl group. The first functional group is at least one type of group selected from the group consisting of an isocyanate group, an isothiocyanate group, an epoxy group, and an aldehyde group.

IPC Classes  ?

  • C08F 218/00 - Copolymers having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid
  • B32B 7/023 - Optical properties
  • B32B 27/30 - Layered products essentially comprising synthetic resin comprising vinyl resinLayered products essentially comprising synthetic resin comprising acrylic resin
  • B32B 27/36 - Layered products essentially comprising synthetic resin comprising polyesters
  • B32B 37/06 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
  • B32B 37/15 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
  • C08K 5/14 - Peroxides
  • G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
  • G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses

52.

ALUMINUM NITRIDE POWDER AND RESIN COMPOSITION

      
Application Number 19102333
Status Pending
Filing Date 2023-08-29
First Publication Date 2025-08-14
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Takakusaki, Makoto
  • Fukunaga, Yutaka
  • Imoto, Yasushi
  • Kuramoto, Akimasa
  • Chiburi, Masato

Abstract

An aluminum nitride powder according to the present invention has an average particle size of 5 to 50 μm and an oxygen content of 0.5% by mass or less, has polyhedral particles having at least two smooth surfaces ‘a’ under observation with a scanning electron microscope at 500× magnification, in which for the polyhedral particles with a major axis (L) of 5 μm or more, the average value of the ratio (L/D) of the major axis (L) to the minor axis (D) is within the range of 1 to 1.4. According to the present invention, an aluminum nitride powder having high thermal conductivity when filled in a resin to obtain a resin composition, and good fluidity, can be provided.

IPC Classes  ?

  • C08K 7/00 - Use of ingredients characterised by shape
  • C01B 21/072 - Binary compounds of nitrogen with metals, with silicon, or with boron with aluminium

53.

γ-2CAO∙SIO2-CONTAINING FIRED PRODUCT AND METHOD FOR PRODUCING SAME

      
Application Number JP2025002874
Publication Number 2025/164688
Status In Force
Filing Date 2025-01-29
Publication Date 2025-08-07
Owner
  • TOKUYAMA CORPORATION (Japan)
  • DENKA COMPANY LIMITED (Japan)
Inventor
  • Ota Masami
  • Onishi Takahiro
  • Adachi Jo
  • Nakamura Akinori
  • Ushiro Masataka
  • Yamashita Kazuya
  • Mori Taiichiro

Abstract

22322323233 is 20.00 mass% or less.

IPC Classes  ?

  • C04B 22/08 - Acids or salts thereof
  • B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
  • C04B 7/147 - Metallurgical slag
  • C04B 18/14 - Waste materialsRefuse from metallurgical processes

54.

GEOPOLYMER COMPOSITION AND ITS PRODUCTION METHOD

      
Application Number 18856093
Status Pending
Filing Date 2023-04-12
First Publication Date 2025-08-07
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Onishi, Takahiro
  • Omura, Kohei

Abstract

It is to provide a powdered-state geopolymer composition comprising an active filler comprising a carbonated slag fine powder and a pozzolanic material powder, an alkali source in a powdered-state comprising at least one selected from alkali metal silicate powder, alkali metal carbonate powder, wherein the carbonated slag fine powder comprises 0.1 mass % or more and 2.0 mass % or less of CO2, and comprises 0.26 mass % or more and 1.0 mass % or less of bonding water.

IPC Classes  ?

  • C04B 12/00 - Cements not provided for in groups
  • C04B 5/06 - Ingredients, other than water, added to the molten slagTreatment with gases or gas generating material, e.g. to obtain porous slag
  • C04B 18/08 - Flue dust
  • C04B 18/14 - Waste materialsRefuse from metallurgical processes
  • C04B 20/02 - Treatment
  • C04B 22/10 - Acids or salts thereof containing carbon in the anion, e.g. carbonates
  • C04B 28/00 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
  • C04B 28/26 - Silicates of the alkali metals
  • C04B 103/00 - Function or property of the active ingredients

55.

HIGH-PURITY AQUEOUS SODIUM SILICATE SOLUTION AND METHOD FOR PRODUCING THE SAME

      
Application Number JP2025000933
Publication Number 2025/164297
Status In Force
Filing Date 2025-01-15
Publication Date 2025-08-07
Owner TOKUYAMA CORPORATION (Japan)
Inventor Nishitake, Toshihiro

Abstract

Provided is a production method that makes it possible to obtain, by a simple manner, a high-purity aqueous sodium silicate solution in which nickel is reduced to an extremely low concentration from a nickel-containing aqueous sodium silicate solution. The method for producing an aqueous sodium silicate solution in which nickel is reduced comprises: a capture step in which nickel is captured from a nickel-containing aqueous sodium silicate solution using layered sodium silicate; and a separation step in which the layered sodium silicate having captured the nickel is removed from the aqueous sodium silicate solution.

IPC Classes  ?

  • C01B 33/32 - Alkali metal silicates
  • H01L 21/304 - Mechanical treatment, e.g. grinding, polishing, cutting

56.

γ-2 CAO∙SIO2-CONTAINING FIRED PRODUCT AND METHOD FOR PRODUCING SAME

      
Application Number JP2025002873
Publication Number 2025/164687
Status In Force
Filing Date 2025-01-29
Publication Date 2025-08-07
Owner
  • TOKUYAMA CORPORATION (Japan)
  • DENKA COMPANY LIMITED (Japan)
Inventor
  • Ota Masami
  • Onishi Takahiro
  • Adachi Jo
  • Nakamura Akinori
  • Ushiro Masataka
  • Yamashita Kazuya
  • Mori Taiichiro

Abstract

2232322323233 is 25.00 mass% or less.

IPC Classes  ?

  • C04B 22/08 - Acids or salts thereof
  • B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
  • C04B 18/167 - Recycled materials, i.e. waste materials reused in the production of the same materials
  • B09B 101/30 - Incineration ashes
  • B09B 101/45 - Concrete
  • B09B 101/55 - Slag

57.

METHOD FOR PRODUCING CHLOROSILANE COMPOUND

      
Application Number JP2024043358
Publication Number 2025/158801
Status In Force
Filing Date 2024-12-09
Publication Date 2025-07-31
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Nakanishi, Hodaka
  • Iiyama, Shoji

Abstract

In the present invention, in the production of a chlorosilane compound by a chlorination reaction of a metal silicon, for the purpose of enabling the prevention of the precipitation of scales on the inner wall of an upstream part of a heat exchanger that is provided in a reaction gas transfer path to a distillation column and also enabling the stable production of the chlorosilane compound, a metal silicon mentioned below is used as the above-mentioned metal silicon: a metal silicon having a zirconium content (Zr%) of 35 ppm by mass or less in terms of element content and also having a mass ratio (Ti%/Zr%) of a titanium content (Ti%) to the zirconium content (Zr%) of 8.0 or more.

IPC Classes  ?

58.

POWDER COMPOSITION AND PRODUCTION METHOD FOR THREE-DIMENSIONAL FABRICATED ARTICLE

      
Application Number JP2025001070
Publication Number 2025/158978
Status In Force
Filing Date 2025-01-16
Publication Date 2025-07-31
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Samagawa, Atsushi
  • Hamasaka, Go
  • Cernohous, Jeff
  • Humpal, Paul
  • Johnson, Ellis
  • Farren, Jonathan

Abstract

A powder composition from which a molded body having high thermal conductivity can be obtained, the powder composition containing an aluminum nitride powder and a polyamide powder, wherein the aluminum nitride powder content is 70-95 mass%.

IPC Classes  ?

  • C04B 35/582 - Composites
  • B28B 1/30 - Producing shaped articles from the material by applying the material on to a core, or other moulding surface to form a layer thereon

59.

TIRE RUBBER COMPOSITION, TIRE RUBBER MATERIAL, AND TIRE

      
Application Number JP2025001180
Publication Number 2025/158996
Status In Force
Filing Date 2025-01-16
Publication Date 2025-07-31
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Kudo Yasuhiko
  • Matsumoto Tomoki
  • Kondou Manabu

Abstract

[Problem] To provide a tire rubber material that has an excellent balance of wear resistance, breaking strength, and fatigue crack resistance, a tire rubber composition that is suitable for production of the tire rubber material, and a tire that includes the tire rubber material. [Solution] A tire rubber composition according to the present invention includes 5–90 parts by mass of a hydrophilic fumed silica and 1.5–30 parts by mass of a silane coupling agent per 100 parts by mass of a synthetic rubber. The BET specific surface area Sf (m2/g) of the hydrophilic fumed silica and the hydrophilic fumed silica content Cf (parts by mass) per 100 parts by mass of the synthetic rubber satisfy the following relationship. 4,500≤Sf×Cf≤35,000

IPC Classes  ?

  • C08L 21/00 - Compositions of unspecified rubbers
  • B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
  • C08K 3/36 - Silica
  • C08K 5/54 - Silicon-containing compounds

60.

GREEN SHEET, METHOD FOR MANUFACTURING SILICON NITRIDE SINTERED BODY, AND SILICON NITRIDE SINTERED BODY

      
Application Number 18705397
Status Pending
Filing Date 2022-12-14
First Publication Date 2025-07-24
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Kusano, Dai
  • Gotoh, Kunihiro

Abstract

Provided is a green sheet, comprising a raw material powder and a binder resin, in which the raw material powder contains a silicon nitride powder, and a glass transition temperature of the binder resin is less than −20° C.

IPC Classes  ?

61.

PHOTOCURABLE COMPOSITION, OPTICAL LAMINATE, OPTICAL ARTICLE, LENS, AND SPECTACLES

      
Application Number 18837236
Status Pending
Filing Date 2023-02-02
First Publication Date 2025-07-24
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Suzuki, Eiji
  • Mori, Katsuhiro

Abstract

The present invention provides: a photocurable composition that makes it possible to provide a cured body having excellent weather-resistant adhesiveness; and an optical laminate, an optical article, a lens, and spectacles which include said cured body. One embodiment provides a photocurable composition. The photocurable composition comprises an inorganic oxide, a radical-polymerizable monomer, an ultraviolet absorber including a radically polymerizable group, and a polymerization initiator. The optical laminate comprises an optical base material and a hard coat layer. The hard coat layer is opposite from at least one main surface of the optical base material. The hard coat layer is a cured body of a photocurable composition according to an embodiment of the present invention.

IPC Classes  ?

  • C09D 4/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond
  • C08F 2/50 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
  • C08F 292/00 - Macromolecular compounds obtained by polymerising monomers on to inorganic materials
  • G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
  • G02B 1/14 - Protective coatings, e.g. hard coatings
  • G02C 7/02 - LensesLens systems
  • G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses

62.

LUBRICANT FOR FILTRATION CONTAINING ONIUM IONS

      
Application Number 18852780
Status Pending
Filing Date 2023-03-30
First Publication Date 2025-07-24
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Sato, Tomoaki
  • Kikkawa, Yuki
  • Saito, Kohei

Abstract

Provided is, for example, a lubricant for filtration which has a surface tension of 60-75 mN/m and which contains onium ions. Also provided are a composition for polishing which contains onium ions and hypohalous acid ions, a metal recovery agent which contains onium ions coordinated to metal oxide ions or metal hydroxide ions, and the like.

IPC Classes  ?

  • B01D 37/02 - Precoating the filtering elements or materialAddition of filter aids to the liquid being filtered
  • B01D 37/03 - Processes of filtration using flocculating agents
  • C09K 13/00 - Etching, surface-brightening or pickling compositions
  • H01L 21/3213 - Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer

63.

Method for Processing Waste Solar Cell

      
Application Number 18704481
Status Pending
Filing Date 2022-11-07
First Publication Date 2025-07-17
Owner Tokuyama Corporation (Japan)
Inventor
  • Yamashita, Takeharu
  • Inoue, Daisuke

Abstract

Provided is a method for efficiently processing a waste solar cell. Provided is a method for efficiently processing a waste solar cell. A method for continuously processing a waste solar cell, the method including a heating step of heating a solar cell module including a resin back sheet and a sealing resin layer in a pyrolysis furnace to melt and oxidatively decompose a resin component included in the solar cell module, wherein in the heating step, in a state in which the solar cell module is placed above a porous ceramic support so as to be separated from the porous ceramic support, and the porous ceramic support is stacked on a porous material supporting a transition metal oxide, hot air is sent from a porous material side to insides of the porous material and the porous ceramic support and to a gap between the solar cell module and the porous ceramic support.

IPC Classes  ?

  • B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
  • B09B 101/15 - Electronic waste

64.

METHOD FOR PRODUCING CEMENT CLINKER

      
Application Number 18848832
Status Pending
Filing Date 2023-03-09
First Publication Date 2025-07-03
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Tsujio, Kenichi
  • Kakimoto, Ryota
  • Seki, Takuya
  • Miyazaki, Kojiro

Abstract

It is a production method of cement clinker comprising a calcination step of calcinating cement clinker powder raw material injected in a calcination kiln, with a kiln burner using a thermal energy source comprising gas fuel, wherein the used amount of gas fuel in the thermal energy source to be used in the kiln burner is adjusted so that the temperature of the kiln burner is lower that its heat resistant temperature.

IPC Classes  ?

  • C04B 7/44 - BurningMelting
  • C04B 7/52 - Grinding
  • C04B 28/14 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements

65.

CEMENT COMPOSITION

      
Application Number JP2024044074
Publication Number 2025/142526
Status In Force
Filing Date 2024-12-12
Publication Date 2025-07-03
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Adachi Jo
  • Chabayashi Takashi

Abstract

343232333 content of 2.3-3.3 mass% relative to the total amount of the cement clinker and gypsum.

IPC Classes  ?

66.

METHOD FOR PRODUCING QUATERNARY ALKYLAMMONIUM HYPOBROMITE SOLUTION AND METHOD FOR TREATING SEMICONDUCTOR WAFER

      
Application Number JP2024045869
Publication Number 2025/143006
Status In Force
Filing Date 2024-12-25
Publication Date 2025-07-03
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Kikkawa, Yuki
  • Suzuki, Yuzan
  • Ito, Yudai
  • Yarimizu, Hiroto
  • Ishido, Takehiko

Abstract

A method for producing a quaternary alkylammonium hypobromite solution comprising: a preparation step in which a quaternary alkylammonium hydroxide solution is prepared in a reaction vessel; and a reaction step in which the quaternary alkylammonium hydroxide solution is brought into contact with liquid bromine and/or bromine gas in the reaction vessel.

IPC Classes  ?

  • C07C 209/68 - Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton
  • C07C 211/63 - Quaternary ammonium compounds having quaternised nitrogen atoms bound to acyclic carbon atoms
  • C11D 3/26 - Organic compounds containing nitrogen
  • H01L 21/304 - Mechanical treatment, e.g. grinding, polishing, cutting

67.

SEMICONDUCTOR TREATMENT LIQUID FOR REMOVING RUTHENIUM SILICIDE

      
Application Number 18999298
Status Pending
Filing Date 2024-12-23
First Publication Date 2025-07-03
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Suzuki, Yuzan
  • Kikkawa, Yuki

Abstract

A semiconductor treatment liquid for removing ruthenium silicide from a substrate containing ruthenium silicide, the semiconductor treatment liquid for ruthenium silicide removal containing (i) at least one selected from the group consisting of hypochlorous acid, hypobromous acid, periodic acid, and ions thereof, (ii) at least one selected from the group consisting of hydrogen fluoride and a fluoride ion, and (iii) an onium ion.

IPC Classes  ?

  • C23F 1/26 - Acidic compositions for etching refractory metals
  • H01L 21/3213 - Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer

68.

METHOD FOR RECOVERING MONOCRYSTALLINE SILICON OR POLYCRYSTALLINE SILICON FROM SOLAR PANEL, AND METHOD FOR PRODUCING RAW MATERIAL FOR ALL-SOLID-STATE LITHIUM ION BATTERY NEGATIVE ELECTRODE ACTIVE MATERIAL USING RECOVERED SILICON

      
Application Number JP2024040517
Publication Number 2025/142182
Status In Force
Filing Date 2024-11-14
Publication Date 2025-07-03
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Ishida Haruyuki
  • Horinaga Mami

Abstract

[Problem] To provide a method for reusing, by a simple method, a silicon cell separated from a solar panel. [Solution] Provided is a method for recovering monocrystalline silicon or polycrystalline silicon from a solar panel, the method being characterized by: separating monocrystalline silicon or polycrystalline silicon from a waste solar panel; thereafter, washing the surface of the separated monocrystalline silicon or polycrystalline silicon with an acid; and crushing the monocrystalline silicon or polycrystalline silicon, of which the surface has been washed with an acid, to an average particle diameter of 0.5-5.0 μm in the presence of a dispersion medium containing an alcohol.

IPC Classes  ?

  • C01B 33/02 - Silicon
  • B09B 3/35 - Shredding, crushing or cutting
  • B09B 3/70 - Chemical treatment, e.g. pH adjustment or oxidation
  • H01M 4/134 - Electrodes based on metals, Si or alloys
  • H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
  • H01M 10/052 - Li-accumulators
  • H01M 10/0562 - Solid materials

69.

METHOD FOR PRODUCING CEMENT CLINKER

      
Application Number 18848844
Status Pending
Filing Date 2023-03-09
First Publication Date 2025-06-26
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Tsujio, Kenichi
  • Kakimoto, Ryota
  • Seki, Takuya
  • Miyazaki, Kojiro

Abstract

A method for producing a cement clinker, that includes using fuel containing gas fuel as fuel of a precalcination burner in a precalcination furnace that precalcinates cement clinker powder raw material.

IPC Classes  ?

  • C04B 7/43 - Heat treatment, e.g. precalcining, burning, meltingCooling
  • C04B 7/44 - BurningMelting
  • C04B 7/52 - Grinding
  • C04B 28/14 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements

70.

Solar Cell Module Recycling System and Solar Cell Module Recycling Method

      
Application Number 18849856
Status Pending
Filing Date 2023-02-01
First Publication Date 2025-06-26
Owner Tokuyama Corporation (Japan)
Inventor
  • Yamashita, Takeharu
  • Inoue, Daisuke

Abstract

Provided is a solar cell module recycling system and a solar cell module recycling method capable of collecting valuable materials and collecting a collection tool efficiently by one processing to reuse the collection tool. Provided is a solar cell module recycling system and a solar cell module recycling method capable of collecting valuable materials and collecting a collection tool efficiently by one processing to reuse the collection tool. A solar cell module recycling system includes a thermal decomposition furnace configured to thermally decompose a used solar cell module mounted on a collection tool; a module collection conveyor configured to collect the thermally decomposed solar cell module thermally decomposed in the thermal decomposition furnace together with the collection tool; a glass collection conveyor configured to collect plate glass included in the thermally decomposed solar cell module transferred to the module collection conveyor; a valuable material collection unit configured to collect valuable materials other than the plate glass, the valuable materials being included in the thermally decomposed solar cell module; and a tool collection unit configured to collect the collection tool remaining on the module collection conveyor after the plate glass and the valuable materials are collected.

IPC Classes  ?

  • B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
  • B09B 101/15 - Electronic waste

71.

Ion Concentration Measurement Device and Measurement Method

      
Application Number 18851722
Status Pending
Filing Date 2023-03-24
First Publication Date 2025-06-26
Owner Tokuyama Corporation (Japan)
Inventor
  • Umemoto, Shiori
  • Kikuchi, Shigetoshi
  • Watanabe, Shin

Abstract

An object of the present invention is to provide an ion concentration measurement device and a measurement method capable of precisely determining an ion concentration by clarifying a method for selecting an ion-selective electrode that has a small measurement error and hardly receives interference of a coexisting ion and using the selected ion-selective electrode. An ion concentration measurement device including two or more kinds of ion-selective electrodes that have mutually different selectivity coefficient ratios for a plurality of ions and satisfy formulas (1) and (2), wherein the two or more kinds of ion-selective electrodes are constituted by n kinds of ion-selective electrodes, and wherein n is the number of kinds of the plurality of ions and is an integer of 2 or more. An object of the present invention is to provide an ion concentration measurement device and a measurement method capable of precisely determining an ion concentration by clarifying a method for selecting an ion-selective electrode that has a small measurement error and hardly receives interference of a coexisting ion and using the selected ion-selective electrode. An ion concentration measurement device including two or more kinds of ion-selective electrodes that have mutually different selectivity coefficient ratios for a plurality of ions and satisfy formulas (1) and (2), wherein the two or more kinds of ion-selective electrodes are constituted by n kinds of ion-selective electrodes, and wherein n is the number of kinds of the plurality of ions and is an integer of 2 or more. Matrix ⁢ A = 
 ( K S ⁢ 1 ( B ⁢ 1 , B ⁢ 1 ) K S ⁢ 1 ( B ⁢ 1 , B ⁢ 2 ) … K S ⁢ 1 ( B ⁢ 1 , Bj ) … K S ⁢ 1 ( B ⁢ 1 , Bn ) K S ⁢ 2 ( B ⁢ 1 , B ⁢ 1 ) K S ⁢ 2 ( B ⁢ 1 , B ⁢ 2 ) … K S ⁢ 2 ( B ⁢ 1 , Bj ) … K S ⁢ 2 ( B ⁢ 1 , Bn ) ⋮ ⋮ ⋮ ⋮ K Si ( B ⁢ 1 , B ⁢ 1 ) K Si ( B ⁢ 1 , B ⁢ 2 ) … K Si ( B ⁢ 1 , Bj ) … K Si ( B ⁢ 1 , Bn ) ⋮ ⋮ ⋮ ⋮ K Sn ( B ⁢ 1 , B ⁢ 1 ) K Sn ( B ⁢ 1 , B ⁢ 2 ) … K Sn ( B ⁢ 1 , Bj ) … K Sn ( B ⁢ 1 , Bn ) ) ( 1 )  A  > 0.1 ( 2 ) An object of the present invention is to provide an ion concentration measurement device and a measurement method capable of precisely determining an ion concentration by clarifying a method for selecting an ion-selective electrode that has a small measurement error and hardly receives interference of a coexisting ion and using the selected ion-selective electrode. An ion concentration measurement device including two or more kinds of ion-selective electrodes that have mutually different selectivity coefficient ratios for a plurality of ions and satisfy formulas (1) and (2), wherein the two or more kinds of ion-selective electrodes are constituted by n kinds of ion-selective electrodes, and wherein n is the number of kinds of the plurality of ions and is an integer of 2 or more. Matrix ⁢ A = 
 ( K S ⁢ 1 ( B ⁢ 1 , B ⁢ 1 ) K S ⁢ 1 ( B ⁢ 1 , B ⁢ 2 ) … K S ⁢ 1 ( B ⁢ 1 , Bj ) … K S ⁢ 1 ( B ⁢ 1 , Bn ) K S ⁢ 2 ( B ⁢ 1 , B ⁢ 1 ) K S ⁢ 2 ( B ⁢ 1 , B ⁢ 2 ) … K S ⁢ 2 ( B ⁢ 1 , Bj ) … K S ⁢ 2 ( B ⁢ 1 , Bn ) ⋮ ⋮ ⋮ ⋮ K Si ( B ⁢ 1 , B ⁢ 1 ) K Si ( B ⁢ 1 , B ⁢ 2 ) … K Si ( B ⁢ 1 , Bj ) … K Si ( B ⁢ 1 , Bn ) ⋮ ⋮ ⋮ ⋮ K Sn ( B ⁢ 1 , B ⁢ 1 ) K Sn ( B ⁢ 1 , B ⁢ 2 ) … K Sn ( B ⁢ 1 , Bj ) … K Sn ( B ⁢ 1 , Bn ) ) ( 1 )  A  > 0.1 ( 2 ) In formula (1), Bj represents a j-th ion, and Si is a symbol representing an i-th ion-selective electrode. Ksi(B1, Bj) represents an ion selectivity coefficient for the ion Bj when an ion B1 is used as a reference in the ion-selective electrode Si. In formula (2), ∥A∥ is an absolute value of a determinant of a matrix A.

IPC Classes  ?

72.

Thermally Conductive Filler

      
Application Number 18852088
Status Pending
Filing Date 2023-03-13
First Publication Date 2025-06-26
Owner Tokuyama Corporation (Japan)
Inventor
  • Inaki, Yoshitaka
  • Inagawa, Hisamori
  • Tsuchida, Kouki
  • Aoki, Kenta

Abstract

The present invention provides a thermally conductive filler having a high filling property into a resin. The present invention includes a thermally conductive filler containing a first surface-treated powder and a second surface-treated powder having a different degree of hydrophobicity from that of the first surface-treated powder. In particular, when in the thermally conductive filler, a particle diameter D50 with a cumulative volume of 50% is 0.1 to 2 μm and the amount of coarse particles of 5 μm or more is controlled to be small, a heat dissipation material composition filled with the thermally conductive filler exhibits extremely excellent characteristics that it is possible to reliably fill narrow gaps.

IPC Classes  ?

  • C09K 5/14 - Solid materials, e.g. powdery or granular
  • C08K 9/06 - Ingredients treated with organic substances with silicon-containing compounds
  • C09C 1/30 - Silicic acid
  • C09C 1/40 - Compounds of aluminium
  • C09C 3/12 - Treatment with organosilicon compounds

73.

CURABLE COMPOSITION, CURED BODY, OPTICAL ARTICLE, LENS, RUBBER SHEET, EYE PROTECTOR, ANTIBACTERIAL/ANTIVIRAL AGENT, AND RESIN COMPOSITION

      
Application Number JP2024043160
Publication Number 2025/134806
Status In Force
Filing Date 2024-12-06
Publication Date 2025-06-26
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Marumoto Hayato
  • Kawasaki Takayoshi
  • Shiine Tsubasa

Abstract

Provided is a curable composition comprising a first bismuth compound having bismuth and at least one of an acryloyl group and a methacryloyl group, and a first radical polymerizable monomer which has a polyethylene glycol chain and in which the ratio N2/N1 of the number average molecular weight N2 of the polyethylene glycol chain to the number average molecular weight N1 is 75-95%, wherein the percentage of the polyethylene glycol chain is 13.5 mass% or more in the composition. Also provided are: a cured body of the curable composition; and an optical article, a lens, a rubber sheet, an eye protector, and an antibacterial/antiviral agent each containing the cured body.

IPC Classes  ?

  • C08F 2/44 - Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
  • C08F 290/06 - Polymers provided for in subclass

74.

ADHESIVE COMPOSITION, PRODUCTION METHOD THEREFOR, AND OPTICAL DEVICE

      
Application Number JP2024035442
Publication Number 2025/134473
Status In Force
Filing Date 2024-10-03
Publication Date 2025-06-26
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Kato, Daiki
  • Hanada, Reina
  • Hamasaka, Go

Abstract

Provided are an adhesive composition and a production method therefor, the adhesive composition having good manipulability during use, and a cured body of the composition having a low coefficient of linear expansion and storage elastic modulus. Also provided is an optical device in which components are less susceptible to displacement caused by temperature changes and impacts. This adhesive composition contains an (A) epoxy compound, an (B) oxetane compound, a (C) silane coupling agent, a (D) photoacid generator, and (E) silica. The (E) silica includes (E-1) large-particle silica and (E-2) small-particle silica. The average particle size D50 of the (E-1) large-particle silica is 0.5 μm to 1.5 μm. The average particle size D50 of the (E-2) small-particle silica is less than 0.5 μm. The difference between the average particle size D50 of the (E-1) large-particle silica and the average particle size D50 of the (E-2) small-particle silica is 0.5 μm or more. The (E-2) small-particle silica content of the (E) silica is 10 mass% to 50 mass%.

IPC Classes  ?

  • C09J 163/00 - Adhesives based on epoxy resinsAdhesives based on derivatives of epoxy resins
  • C09J 11/04 - Non-macromolecular additives inorganic
  • C09J 11/06 - Non-macromolecular additives organic

75.

Reaction Furnace for Producing Polycrystalline Silicon Rod, Gas Supply Nozzle, Production Method of Polycrystalline Silicon Rod, and Polycrystalline Silicon Rod

      
Application Number 18728569
Status Pending
Filing Date 2023-01-13
First Publication Date 2025-06-19
Owner Tokuyama Corporation (Japan)
Inventor
  • Nakamura, Ryota
  • Ishikawa, Koichi

Abstract

A reaction furnace for producing a polycrystalline silicon rod, the interior of which is hermetically sealed by a bell jar and a bottom plate, wherein the bottom plate is provided with a plurality of electrode pairs for holding a silicon core wire and energizing the silicon core wire, and the bottom plate is further provided with a plurality of gas supply nozzles, each with a tip jet upward, for supplying a starting material gas for silicon deposition into the interior space of the bell jar, characterized in that at least a part of the surface of the gas supply nozzles in contact with the interior space of the bell jar is composed of quartz including a roughened surface area having a ten point average roughness Rz of 1.0-5.0 μm.

IPC Classes  ?

  • C30B 28/14 - Production of homogeneous polycrystalline material with defined structure directly from the gas state by chemical reaction of reactive gases
  • C30B 29/06 - Silicon

76.

GATHESIL

      
Serial Number 79432251
Status Pending
Filing Date 2025-06-18
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ? 01 - Chemical and biological materials for industrial, scientific and agricultural use

Goods & Services

Silicon dioxide; oxides; inorganic acids; silicates; inorganic salts for industrial purposes; thickening agents for use in the manufacture of inks; thickening agents for use in the manufacture of paints; chemical thickening agents for use in molding plastics; stability improving agents for use in the manufacture of industrial products; viscosity improving agents for use in the manufacture of industrial products; fillers for use in adjusting viscosity and hardening strength of sealant; rubber processing preparations; chemical intensifiers for rubber; rubber preservatives; rubber modifiers; catalysts for use in the manufacture of rubber; chemical agents; chemicals for use in the production of synthetic rubber; chemicals for use in the processing of natural rubber; industrial chemicals

77.

COLSIL

      
Serial Number 79432254
Status Pending
Filing Date 2025-06-18
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ? 01 - Chemical and biological materials for industrial, scientific and agricultural use

Goods & Services

Silicon dioxide; oxides; inorganic acids; silicates; inorganic salts for industrial purposes; thickening agents for use in the manufacture of inks; thickening agents for use in the manufacture of paints; chemical thickening agents for use in molding plastics; stability improving agents for use in the manufacture of industrial products; viscosity improving agents for use in the manufacture of industrial products; fillers for use in adjusting viscosity and hardening strength of sealant; rubber processing preparations; chemical intensifiers for rubber; rubber preservatives; rubber modifiers; catalysts for use in the manufacture of rubber; chemical agents; chemicals for use in the production of synthetic rubber; chemicals for use in the processing of natural rubber; industrial chemicals

78.

COMSIL

      
Serial Number 79432878
Status Pending
Filing Date 2025-06-18
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ? 01 - Chemical and biological materials for industrial, scientific and agricultural use

Goods & Services

Silicon dioxide; oxides; inorganic acids; silicates; inorganic salts for industrial purposes; thickening agents for use in the manufacture of inks; thickening agents for use in the manufacture of paints; chemical thickening agents for use in molding plastics; stability improving agents for industrial use; chemical stabilizers for industrial purposes; viscosity improving agents for industrial use; viscosity improvers for industrial purposes; fillers for use in adjusting viscosity and hardening strength of sealant; rubber processing preparations; chemical intensifiers for rubber; rubber preservatives; rubber modifiers; catalysts for use in the manufacture of rubber; chemical agents; chemicals for use in the production of synthetic rubber; chemicals for use in the processing of natural rubber; industrial chemicals

79.

CURABLE COMPOSITION, CURED ARTICLE, LAMINATE, OPTICAL ARTICLE, LENS, AND SPECTACLES

      
Application Number JP2024041333
Publication Number 2025/121154
Status In Force
Filing Date 2024-11-21
Publication Date 2025-06-12
Owner TOKUYAMA CORPORATION (Japan)
Inventor Miyazaki Masayuki

Abstract

The present disclosure provides a curable composition with which it is possible to provide a cured article having excellent functional dye performance and appearance, and also provides a cured article, a laminate, an optical article, a lens, and spectacles. One embodiment of the present invention provides a curable composition. The curable composition contains a first radically polymerizable monomer represented by formula (1) and a functional dye. In formula (1), R1is a trivalent or more organic residue that contains at least one heteroatom selected from the group consisting of an oxygen atom and a nitrogen atom and that has 1-50 inclusive carbon atoms. R2 is a linear or branched alkylene group having 1-10 inclusive carbon atoms. a2 is 0-15 inclusive. b2 is 3 or more. Y is a monovalent group represented by formula (2) or a (meth)acryloyl group, provided that at least one of a plurality of Y groups is a monovalent group represented by formula (2), and a plurality of Y groups may be the same or different.

IPC Classes  ?

  • G02B 5/23 - Photochromic filters
  • C08F 2/44 - Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
  • C08F 290/06 - Polymers provided for in subclass
  • G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses

80.

SURFACE-TREATED SILICA POWDER, RESIN COMPOSITION, AND DISPERSION

      
Application Number 18843874
Status Pending
Filing Date 2023-03-16
First Publication Date 2025-06-12
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Watanabe, Satoshi
  • Saiki, Keiji

Abstract

An aspect of the present invention provides surface-treated silica powder which is excellent in thickening property over time when used as a resin filler for a semiconductor sealant or the like. The surface-treated silica powder according to an embodiment of the present invention is surface-treated silica powder obtained by subjecting silica particles to surface treatment with use of a silica coupling agent. In the surface treated silica powder, a ratio (C/T) of an amount C of a silane coupling agent component chemically bonded to surfaces of the silica particles and an amount T of a silane coupling agent component present on the surface-treated silica powder is 0.7 or less.

IPC Classes  ?

  • C01B 33/18 - Preparation of finely divided silica neither in sol nor in gel formAfter-treatment thereof
  • C08K 3/36 - Silica
  • C08K 9/02 - Ingredients treated with inorganic substances

81.

SILICA POWDER, RESIN COMPOSITION, AND SUBSTRATE

      
Application Number JP2024036833
Publication Number 2025/121005
Status In Force
Filing Date 2024-10-16
Publication Date 2025-06-12
Owner TOKUYAMA CORPORATION (Japan)
Inventor Hamasaka, Go

Abstract

9110911010 that is measured at the frequency of 10 GHz is 1.6 or less.

IPC Classes  ?

  • C01B 33/18 - Preparation of finely divided silica neither in sol nor in gel formAfter-treatment thereof
  • C08K 3/36 - Silica
  • C08L 101/00 - Compositions of unspecified macromolecular compounds

82.

TOKUYAMA LIFE SCIENCE

      
Serial Number 99221223
Status Pending
Filing Date 2025-06-06
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ?
  • 01 - Chemical and biological materials for industrial, scientific and agricultural use
  • 02 - Paints, varnishes, lacquers
  • 03 - Cosmetics and toiletries; cleaning, bleaching, polishing and abrasive preparations
  • 05 - Pharmaceutical, veterinary and sanitary products
  • 09 - Scientific and electric apparatus and instruments
  • 10 - Medical apparatus and instruments
  • 17 - Rubber and plastic; packing and insulating materials
  • 42 - Scientific, technological and industrial services, research and design
  • 44 - Medical, veterinary, hygienic and cosmetic services; agriculture, horticulture and forestry services

Goods & Services

chemicals; diagnostic reagents for scientific or research use; standard solutions for use in analytical chemistry; diagnostic reagents and preparations, except for medical or veterinary use; proteins and enzymes; antibodies for scientific purposes, other than for medical or veterinary use; stem cells for scientific purposes; glue and adhesives for industrial purposes; plant growth regulating preparations; reagent paper not for medical purposes; unprocessed plastics in primary form; groundwood pulp or chemical pulps for manufacturing purposes; reagents for chemical analyses Paints soaps and detergents; dentifrices; cosmetics; perfumery pharmaceutical preparations; diagnostic preparations; diagnostic reagents; reagents for medical purposes; diagnostic reagents for medical purposes; in vitro diagnostic preparations for medical purposes; reagents for use in medical genetic testing; clinical diagnostic reagents; saccharide preparations; oiled paper for medical purposes; adhesive tapes for medical purposes; cotton swabs for medical purposes; drug delivery agents in the form of edible wafers for wrapping powdered pharmaceuticals; gauze for dressings; empty capsules for pharmaceuticals; eyepatches for medical purposes; ear bandages; menstruation bandages; menstruation tampons; sanitary napkins; sanitary panties; absorbent cotton; adhesive plasters; bandages for dressings; liquid bandages; breast-nursing pads; dental materials; disposable diapers for incontinence; fly catching paper; mothproofing paper; lacteal flour for babies; semen for artificial insemination laboratory apparatus and instruments; optical machines and apparatus; measuring or testing machines and instruments; electronic machines; electron tubes; semi-conductor elements; electronic circuits; computer programs artificial tympanic membranes; prosthetics or fillings materials, not for dental use; sanitary masks; medical apparatus and instruments; blood testing apparatus semi-worked plastic products; semi-processed resins; rubber (raw or semi-worked); latex (rubber); soundproofing materials of rock fiber, not for building purposes; asbestos boards; asbestos powder testing, inspection or research of pharmaceuticals, cosmetics or foodstuffs; providing information relating to testing, inspection or research of pharmaceuticals, cosmetics or foodstuffs; medical research; chemistry services; testing, inspection or research on prevention of pollution; testing, inspection or research on agriculture, livestock breeding or fisheries; rental of measuring apparatus; rental of laboratory apparatus and instruments massage and therapeutic Shiatsu massage; chiropractic; moxibustion; Judo-seifuku (treatment for dislocated joints, sprain, bone fractures); bodywork therapy; acupuncture; medical care; provision of medical information; medical examination services; dentistry services; dispensing of pharmaceuticals; medical testing; clinical examination; consultancy and information services relating to clinical examination; clinical testing and evaluation; nutritional and dietetic consultancy; medical equipment rental

83.

METHOD FOR PRODUCING POLYSILICON ROD

      
Application Number JP2024038264
Publication Number 2025/115484
Status In Force
Filing Date 2024-10-28
Publication Date 2025-06-05
Owner TOKUYAMA CORPORATION (Japan)
Inventor Tokura, Yuichiro

Abstract

The present invention improves the resistivity value of a polysilicon rod precipitated at an early stage of a growth period while preventing collapse of the polysilicon rod at the early stage of the growth period. This method for producing a polysilicon rod (S1) involves supplying a raw material gas (G1) containing a chlorosilane to a silicon core wire erected in the inside of a reaction furnace (10) and obtained by performing electrical-heating, thereby precipitating polysilicon to the surface of the silicon core wire and growing the same into a polysilicon rod (S1) having a diameter of 80 mm or more. The raw material gas (G1) is introduced into the reaction furnace (10) in a manner that the number of gas exchange representing the introduction amount of the raw material gas (G1) into the reaction furnace (10) with respect to the volume of the reaction furnace (10), in a growth start period (T1) of the polysilicon rod (S1) until one hour passes from the start of precipitation of the polysilicon to the surface of the silicon core wire, is not less than 8 times but less than 35 times.

IPC Classes  ?

  • C30B 29/06 - Silicon
  • C01B 33/035 - Preparation by decomposition or reduction of gaseous or vaporised silicon compounds other than silica or silica-containing material by decomposition or reduction of gaseous or vaporised silicon compounds in the presence of heated filaments of silicon, carbon or a refractory metal, e.g. tantalum or tungsten, or in the presence of heated silicon rods on which the formed silicon is deposited, a silicon rod being obtained, e.g. Siemens process

84.

METHOD AND DEVICE FOR PRODUCING PURIFIED ISOPROPYL ALCOHOL

      
Application Number JP2024040792
Publication Number 2025/115671
Status In Force
Filing Date 2024-11-18
Publication Date 2025-06-05
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Tokunaga Takashi
  • Yamashita Yoshiaki
  • Hosaka Shunsuke
  • Kiyomatsu Mamoru

Abstract

Provided is a method for producing purified isopropyl alcohol by dehydrating crude isopropyl alcohol containing water as an impurity, the method comprising: a phase separation step in which a mixed liquid of the crude isopropyl alcohol and an azeotropic agent is accommodated in a phase separation tank and phase-separated into an upper-phase liquid containing the azeotropic agent, water, and isopropyl alcohol and a lower-phase liquid containing water; and an azeotropic distillation step in which the upper-phase liquid is subjected to azeotropic distillation in an azeotropic distillation column, and a distillate containing an azeotropic mixture of the azeotropic agent and water and a bottom product containing isopropyl alcohol are extracted, wherein the distillate is supplied to the phase separation tank.

IPC Classes  ?

  • C07C 31/10 - Monohydroxylic acyclic alcohols containing three carbon atoms
  • B01D 3/00 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
  • B01D 3/36 - Azeotropic distillation
  • C07C 29/82 - SeparationPurificationStabilisationUse of additives by physical treatment by distillation by azeotropic distillation

85.

ELECTROLYTIC CELL

      
Application Number 18843531
Status Pending
Filing Date 2023-02-27
First Publication Date 2025-06-05
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Ishimaru, Hidenari
  • Inoue, Hiroshi

Abstract

The present invention provides a novel and improved electrolytic cell in which a cathode plate and an anode plate are relatively large for the sizes of a cathode frame and an anode frame as compared with those in a conventional electrolytic cell, so that the current-carrying area of the cathode and anode plates is relatively large for the size of the electrolytic cell, resulting in increased electrolysis efficiency. An upper opening and a lower opening are formed in an upper end part and a lower end part, respectively, of the inner surface of the cathode frame to which the cathode plate is fixed. Similarly, an upper opening and a lower opening are formed in an upper end part and a lower end part, respectively, of the inner surface of the anode frame to which the anode plate is fixed. Each of the cathode plate and the anode plate extends continuously from above the upper opening to below the lower opening. Each of the cathode plate and the anode plate has an upper through opening and a lower through opening that are formed in alignment with the upper opening and the lower opening, respectively.

IPC Classes  ?

  • C25B 9/63 - Holders for electrodesPositioning of the electrodes
  • C25B 1/01 - Products
  • C25B 11/02 - ElectrodesManufacture thereof not otherwise provided for characterised by shape or form

86.

CONSTANT POTENTIAL ELECTROLYTIC GAS SENSOR AND METHOD FOR MANUFACTURING CONSTANT POTENTIAL ELECTROLYTIC GAS SENSOR

      
Application Number 18578494
Status Pending
Filing Date 2022-07-13
First Publication Date 2025-06-05
Owner
  • NEW COSMOS ELECTRIC CO., LTD. (Japan)
  • FIGARO ENGINEERING INC. (Japan)
Inventor
  • Takashima, Hiromasa
  • Kondo, Katsunori
  • Sakaguchi, Tomonori
  • Kido, Hiroki
  • Ninomiya, Yoshishige

Abstract

A constant potential electrolytic gas sensor 1 of the present invention comprises a case with a case body 21, an electrode structure 3 comprising electrodes 31, 32, 33 provided in the case body 21, lead wires 41, 42, 43 connected to the surfaces of the electrodes 31, 32, 33, and external electrodes 51, 52, 53 that are provided in the case body 21 and are connected to the lead wires 41, 42, 43, wherein the electrodes are arranged so that a connection point CP of the external electrode to which the lead wire is connected is located at a height corresponding to the electrode structure 3, and wherein the case body 21 has a holding structure 8 that can hold a predetermined amount of protective agent so as to cover the connection point CP, with respect to each of the external electrodes.

IPC Classes  ?

  • G01N 27/413 - Concentration cells using liquid electrolytes
  • G01N 27/30 - Electrodes, e.g. test electrodesHalf-cells

87.

METHOD FOR PRODUCING PURIFIED ISOPROPYL ALCOHOL

      
Application Number JP2024039202
Publication Number 2025/115528
Status In Force
Filing Date 2024-11-05
Publication Date 2025-06-05
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Hosaka Shunsuke
  • Saito Akihiro
  • Kiyomatsu Mamoru
  • Tokunaga Takashi
  • Yamashita Yoshiaki

Abstract

Provided is a method for producing isopropyl alcohol from crude isopropyl alcohol containing butyl formate as an impurity, the method comprising a pressure distillation step for pressure-distilling crude isopropyl alcohol.

IPC Classes  ?

  • C07C 29/80 - SeparationPurificationStabilisationUse of additives by physical treatment by distillation
  • B01D 3/00 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
  • C07C 31/10 - Monohydroxylic acyclic alcohols containing three carbon atoms

88.

CURABLE COMPOSITION, CURED BODY, LAMINATE, OPTICAL ARTICLE, LENS, AND GLASSES

      
Application Number JP2024040480
Publication Number 2025/115630
Status In Force
Filing Date 2024-11-14
Publication Date 2025-06-05
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Miyazaki Masayuki
  • Hiraren Toshimitsu

Abstract

The present disclosure provides a curable composition that can be used to achieve a cured body excelling in functional dye performance and hardness. The present disclosure also provides a cured body, a laminate, an optical article, a lens, and glasses. One embodiment of the present invention provides a curable composition. The curable composition contains a first radically polymerizable monomer represented by formula (1) and a functional dye. In formula (1), R1and R3each independently represent a monovalent group represented by formula (2), a2 is 1 or a number from 2 to 10, inclusive, R200is a hydrogen atom or a methyl group, and when a2 is 1, R2is a monovalent group represented by formula (2), and when a2 is from 2 to 10, inclusive, R2is a monovalent group represented by formula (2) or a hydrogen atom, and at least one of the plurality of R2 is a monovalent group represented by formula (2). The plurality of monovalent groups represented by formula (2) may be mutually the same or different.

IPC Classes  ?

  • C08F 20/20 - Esters of polyhydric alcohols or phenols
  • B32B 27/30 - Layered products essentially comprising synthetic resin comprising vinyl resinLayered products essentially comprising synthetic resin comprising acrylic resin
  • C08F 2/44 - Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
  • C08F 20/28 - Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
  • C08F 290/06 - Polymers provided for in subclass
  • C09K 9/02 - Organic tenebrescent materials
  • G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
  • G02B 3/00 - Simple or compound lenses
  • G02B 5/23 - Photochromic filters
  • G02C 7/00 - Optical parts
  • G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses

89.

RESIN COMPOSITION

      
Application Number JP2024040568
Publication Number 2025/115640
Status In Force
Filing Date 2024-11-15
Publication Date 2025-06-05
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Masada Isao
  • Hamasaka Tomomi
  • Hamasaka Go

Abstract

The present invention provides a resin composition, a cured product of which has a high thermal conductivity by using a hexagonal boron nitride filler that has an average particle diameter of 1-10 μm and is capable of forming a thin film shape and reducing transmission loss. A resin composition according to the present invention contains an epoxy resin (A), a hexagonal boron nitride filler (B), and a silica filler (C). The total content of the hexagonal boron nitride filler (B) and the silica filler (C) is 200-1,200 parts by mass with respect to 100 parts by mass of the epoxy resin (A). The epoxy resin (A) contains a solid epoxy resin (A-1) and a liquid epoxy resin (A-2). The hexagonal boron nitride filler (B) has an average particle diameter D50 of 1-10 μm and a maximum particle diameter Dmax of 30 μm or less. The silica filler (C) has an average particle diameter D50 of 0.1-1 μm. The mass ratio of the content of the hexagonal boron nitride filler (B) to the content of the silica filler (C) is 85:15 to 30:70.

IPC Classes  ?

  • C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
  • C08K 3/36 - Silica
  • C08K 3/38 - Boron-containing compounds
  • H05K 1/03 - Use of materials for the substrate

90.

RAW MATERIAL FOR NEGATIVE ELECTRODE ACTIVE MATERIAL OF ALL-SOLID LITHIUM ION SECONDARY BATTERY

      
Application Number JP2024040095
Publication Number 2025/110050
Status In Force
Filing Date 2024-11-12
Publication Date 2025-05-30
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Horinaga Mami
  • Ishida Haruyuki

Abstract

PROBLEM TO BE SOLVED To provide a raw material for a negative electrode active material composed of silicon particles capable of improving initial current density in a negative electrode material having improved cycle characteristics by controlling the particle diameter of the silicon. SOLUTION The silicon used as a raw material for a negative electrode active material of an all-solid-state lithium ion secondary battery has an oxygen concentration of 15-30 mass % and a carbon concentration of 3-15 mass % measured at a depth of 5 nm from the surface, and a weight ratio (C-O/Si-Si) of a ratio of a C-O bond to a ratio of an Si-Si bond exceeds 0.01.

IPC Classes  ?

91.

POROUS SPHERICAL SILICA, CATALYST CARRIER, COSMETIC, ANALYTICAL COLUMN, POLISH, RESIN COMPOSITION, AND METHOD OF PRODUCING POROUS SPHERICAL SILICA

      
Application Number 18871106
Status Pending
Filing Date 2024-02-29
First Publication Date 2025-05-29
Owner TOKUYAMA CORPORATION (Japan)
Inventor Yoshimura, Noriko

Abstract

Provided are an independent porous spherical silica such that the alkali metal content is reduced, the hardness of the particles is increased, and the number of shred particles is reduced; and a method of producing such a silica. In the porous spherical silica, the diameter (D50) of volume based particle size distribution is 2 μm to 200 μm, the ratio (D10/D90) of the diameter (D10) to the diameter (D90) is at least 0.3, the pore volume is 0.5 to 8 mL/g, the mode pore radius is 5 to 50 nm, the specific surface area is 50 to 400 m2/g, and the arithmetic mean value of “compressive test forces when specimens are found to break” obtained according to JIS Z8844 is 1.0×101 to 2.0×101 mN, the number of particles each having a circularity of at most 0.7 is at most 20, and the alkali metal content is at most 50 ppm.

IPC Classes  ?

92.

SEMICONDUCTOR CLEANING LIQUID AND METHOD FOR PRODUCING SEMICONDUCTOR CLEANING LIQUID

      
Application Number 18842549
Status Pending
Filing Date 2023-02-07
First Publication Date 2025-05-29
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Hosaka, Shunsuke
  • Tokunaga, Takashi
  • Yamashita, Yoshiaki

Abstract

The present invention provides a semiconductor cleaning liquid which contains isopropyl alcohol, while having a mass ratio of t-butyl alcohol of 1 ppm or less relative to the isopropyl alcohol. The present invention also provides a method for producing a semiconductor cleaning liquid, the method comprising a first distillation step in which a crude aqueous isopropyl alcohol solution that contains t-butyl alcohol as an impurity is supplied to a starting material supply plate of a first distillation column, and a first liquid distillate which contains a low boiling point impurity that has a lower boiling point than isopropyl alcohol is extracted from the column top of the first distillation column, while extracting a first bottom liquid from the column bottom of the first distillation column. In the first distillation step, a fluid containing water is supplied, from the outside of the first distillation column, to a predetermined plate that is above the starting material supply plate by two or more theoretical plates so that the water content in the liquid phase is 15% by mass or more at three or more theoretical plates among the plates of the first distillation column from the starting material supply plate to the column top.

IPC Classes  ?

  • C11D 7/26 - Organic compounds containing oxygen
  • C07C 29/04 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2 by hydration of carbon-to-carbon double bonds
  • C07C 29/80 - SeparationPurificationStabilisationUse of additives by physical treatment by distillation

93.

Silicon Carbide Powder, and Production Method Thereof

      
Application Number 18840717
Status Pending
Filing Date 2023-02-10
First Publication Date 2025-05-22
Owner Tokuyama Corporation (Japan)
Inventor Fukunaga, Yutaka

Abstract

Please delete the Abstract in its entirety and substitute therefor the following new A silicon carbide powder contains free carbon in a content of 0.04 mass % or less, in which a ratio of silicon atoms to carbon atoms (Si/C molar ratio) is 1.00 to 1.02. The silicon carbide powder can be produced by a method including a combustion synthesis step of preheating a mixed powder containing a metal silicon powder and a carbon powder having a Si/C molar ratio of 1.00 or more and 1.02 or less at a temperature of 900° C. to 1300° C. under an inert atmosphere, and igniting a part of the mixed powder to perform combustion synthesis to obtain a crude silicon carbide powder; and a heating step of heating the crude silicon carbide powder at a temperature of 2000° C. to 2500° C. under an inert atmosphere. In addition, the silicon carbide powder can also be obtained, without undergoing the heating step, by preheating the mixed powder at a temperature of 900° C. to 1300° C. under an atmospheric pressure and an inert atmosphere, and igniting a part of the mixed powder to perform combustion synthesis.

IPC Classes  ?

94.

Tokuyama Life Science

      
Application Number 019190508
Status Registered
Filing Date 2025-05-21
Registration Date 2025-11-08
Owner TOKUYAMA CORPORATION (Japan)
NICE Classes  ?
  • 01 - Chemical and biological materials for industrial, scientific and agricultural use
  • 02 - Paints, varnishes, lacquers
  • 03 - Cosmetics and toiletries; cleaning, bleaching, polishing and abrasive preparations
  • 05 - Pharmaceutical, veterinary and sanitary products
  • 09 - Scientific and electric apparatus and instruments
  • 10 - Medical apparatus and instruments
  • 17 - Rubber and plastic; packing and insulating materials
  • 42 - Scientific, technological and industrial services, research and design
  • 44 - Medical, veterinary, hygienic and cosmetic services; agriculture, horticulture and forestry services

Goods & Services

Chemicals (industrial -); diagnostic reagents for scientific or research use; reagents for chemical analyses; standard solutions for use in analytical chemistry; diagnostic reagents and preparations, except for medical or veterinary use; proteins for use in industry; Enzymes for industrial purposes; antibodies for scientific purposes, other than for medical or veterinary use; stem cells for scientific purposes; glue and adhesives for industrial purposes; plant growth regulating preparations; reagent paper [not for medical purposes]; unprocessed plastics in primary form; groundwood pulp or chemical pulps for manufacturing purposes. paints. soaps and detergents; dentifrices; cosmetics; perfumery. pharmaceutical preparations; diagnostic preparations for medical purposes; diagnostic reagents for medical use; reagents for medical purposes; diagnostic reagents for medical purposes; in vitro diagnostic preparations for medical purposes; reagents for use in medical genetic testing; clinical diagnostic reagents; saccharide preparations for medical use; oiled paper for medical purposes; adhesive tapes for medical purposes; cotton swabs for medical purposes; drug delivery agents in the form of edible wafers for wrapping powdered pharmaceuticals; gauze for dressings; empty capsules for pharmaceuticals; eyepatches for medical purposes; ear bandages; menstruation bandages; menstruation tampons; sanitary napkins; sanitary panties; absorbent cotton; adhesive plasters; bandages for dressings; liquid bandages for medical purposes; breast-nursing pads; dental composite materials; dental bonding material; dental impression materials; dental ceramic material; lining materials for dental purposes; disposable diapers for incontinence; fly catching paper; mothproofing paper; lacteal flour for babies; semen for artificial insemination. laboratory apparatus and instruments; optical instruments and apparatus; measuring or testing apparatus and instruments; research electronic apparatus and instruments; scientific electronic apparatus and instruments; monitoring electronic apparatus and instruments; data processing apparatus and instruments; electron tubes; semiconductor elements; electronic circuits; computer programs. artificial tympanic membranes; prosthetics or fillings materials, not for dental use; sanitary masks; medical apparatus and instruments; blood testing apparatus. semi-worked plastic substances; semi-processed resins; rubber [raw or semi-worked]; latex [rubber]; soundproofing materials of rock fiber, not for building purposes; asbestos boards; asbestos powder. testing, inspection or research of pharmaceuticals, cosmetics or foodstuffs; providing information relating to testing, inspection or research of pharmaceuticals, cosmetics or foodstuffs; medical research; chemistry services; testing, inspection or research on prevention of pollution; testing, inspection or research on agriculture, livestock breeding or fisheries; rental of measuring apparatus; rental of laboratory apparatus and instruments. massage and therapeutic Shiatsu massage; chiropractic; moxibustion; Judo-seifuku [treatment for dislocated joints, sprain, bone fractures]; bodywork therapy; acupuncture; medical care; provision of medical information; medical examination services; dentistry services; dispensing of pharmaceuticals; medical testing; clinical examination; consultancy and information services relating to clinical examination; clinical testing and evaluation; nutritional and dietetic consultancy; medical equipment rental.

95.

ANION EXCHANGE RESIN, ANION EXCHANGE MEMBRANE, ANION-EXCHANGE-GROUP-CONTAINING MONOMER, AND QUATERNARY-IMIDAZOLE-GROUP-CONTAINING MONOMER

      
Application Number 18849600
Status Pending
Filing Date 2023-03-28
First Publication Date 2025-05-08
Owner
  • KAKE EDUCATIONAL INSTITUTION (Japan)
  • TOKUYAMA CORPORATION (Japan)
Inventor
  • Higashimura, Hideyuki
  • Sheikh, Md Chanmiya
  • Isomura, Takenori
  • Uwamori, Masahiro

Abstract

To provide an anion exchange resin which has an anion exchange group having high alkali resistance and in which a main chain structure is not affected even if the anion exchange group decomposes. The anion exchange resin according to the present invention is characterized by having an imidazolium group as an anion exchange group in a side chain.

IPC Classes  ?

  • B01J 41/14 - Macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
  • C08F 12/32 - Monomers containing only one unsaturated aliphatic radical containing two or more rings
  • C08J 5/22 - Films, membranes or diaphragms
  • C08J 9/36 - After-treatment

96.

SINTERED SILICON NITRIDE SUBSTRATE

      
Application Number JP2024037340
Publication Number 2025/089218
Status In Force
Filing Date 2024-10-21
Publication Date 2025-05-01
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Ishimoto, Ryuji
  • Ando, Akihiro

Abstract

The present invention relates to a sintered silicon nitride substrate comprising a silicon nitride phase and a grain boundary phase. In a section of the sintered silicon nitride substrate, the unit equivalent length based on the distance between boundaries between the silicon nitride phase and the grain boundary phase is 0.1-2 μm. According to the present invention, a sintered silicon nitride substrate having superior insulation to conventional ones can be provided.

IPC Classes  ?

  • C04B 35/587 - Fine ceramics
  • H01L 23/13 - Mountings, e.g. non-detachable insulating substrates characterised by the shape
  • H05K 1/03 - Use of materials for the substrate

97.

SILICON NITRIDE SINTERED SUBSTRATE AND METHOD FOR PRODUCING SAME

      
Application Number JP2024037798
Publication Number 2025/089309
Status In Force
Filing Date 2024-10-23
Publication Date 2025-05-01
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Ando, Akihiro
  • Ishimoto, Ryuji

Abstract

The present invention is a silicon nitride sintered substrate characterized by comprising: a surface layer formed from silicon nitride particles, wherein the surface layer is present on both surfaces of the silicon nitride sintered substrate, and the silicon nitride particles constituting the surface layer have an average equivalent circle diameter of 5 μm or less and an average aspect ratio of less than 3; and an inner layer formed from silicon nitride particles, wherein the silicon nitride particles constituting the inner layer have an average equivalent circle diameter of 2.0-10.0 μm and an average aspect ratio of 3 or more. According to the present invention, a silicon nitride sintered substrate having excellent adhesiveness when joining a metal plate while having high thermal conductivity is provided.

IPC Classes  ?

98.

Method for producing trichlorosilane and method for producing polycrystalline silicon rod

      
Application Number 18834283
Grant Number 12441620
Status In Force
Filing Date 2022-10-28
First Publication Date 2025-04-24
Grant Date 2025-10-14
Owner Tokuyama Corporation (Japan)
Inventor
  • Sakai, Junya
  • Iiyama, Shoji
  • Matsumura, Kunihiko

Abstract

[Problem to be solved] Provided is a method that enables effective industrial use of an exhaust gas containing hydrogen to be discharged during production of trichlorosilane. [Solution] Provided is a method for producing trichlorosilane, the method comprising: reacting metallic silicon and tetrachlorosilane with a mixed gas containing hydrogen to generate trichlorosilane. The mixed gas containing hydrogen contains 1 to 500 molar ppm of hydrogen chloride and 100 to 10,000 molar ppm of silane hydride, and the mixed gas is heated at 100° C. to 450° C. and then reacted.

IPC Classes  ?

99.

PHOTOCHROMIC COMPOUND, NAPHTHOL DERIVATIVE, CURABLE COMPOSITION, OPTICAL ARTICLE, LENS, AND EYEGLASSES

      
Application Number 18729281
Status Pending
Filing Date 2023-01-06
First Publication Date 2025-04-17
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Miyazaki, Masayuki
  • Venu, Srinivas
  • Mori, Katsuhiro

Abstract

The purpose of the present invention is to provide: a photochromic compound that has excellent temperature dependence, decoloration speed, and durability; a naphthol derivative that can be an intermediate of the photochromic compound; a naphthol derivative that can be an intermediate of the photochromic compound; a curable composition that contains the photochromic compound; an optical article; a lens; and eyeglasses. An embodiment of the present invention provides a photochromic compound having a skeleton represented by formula (1). In formula (1), M is C, Si, or Ge. R1 is a group represented by formula (2). R2 is an alkyl group that may contain a halogen atom in a substituent, or a group represented by formula (2).

IPC Classes  ?

  • C07D 311/94 - Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems condensed with rings other than six-membered or with ring systems containing such rings
  • C07D 513/04 - Ortho-condensed systems
  • G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses

100.

PRODUCTION METHOD FOR MODIFIED WOODY BIOMASS ASH

      
Application Number JP2024034871
Publication Number 2025/079446
Status In Force
Filing Date 2024-09-30
Publication Date 2025-04-17
Owner TOKUYAMA CORPORATION (Japan)
Inventor
  • Morimoto Tetsuro
  • Omura Kohei

Abstract

A method for easily and efficiently reducing the amount of alkali metals in prescribed woody biomass ash, wherein woody biomass ash having a pH level of 12.5 or higher is subjected to a heat treatment at 60-100°C in water at normal pressure.

IPC Classes  ?

  • B09B 3/70 - Chemical treatment, e.g. pH adjustment or oxidation
  • B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
  • B09B 3/80 - Destroying solid waste or transforming solid waste into something useful or harmless involving an extraction step
  • C04B 7/38 - Preparing or treating the raw materials individually or as batches
  • B09B 101/30 - Incineration ashes
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