Herding GmbH Filtertechnik

Germany

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IPC Class
B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours 12
B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies 8
B01D 39/16 - Other self-supporting filtering material of organic material, e.g. synthetic fibres 7
B01D 46/48 - Removing dust other than cleaning filters 4
B01D 46/52 - Particle separators, e.g. dust precipitators, using filters embodying folded material 4
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NICE Class
11 - Environmental control apparatus 4
01 - Chemical and biological materials for industrial, scientific and agricultural use 3
Status
Pending 5
Registered / In Force 19

1.

INHERENTLY STABLE, FLOW-POROUS FILTER ELEMENT AND METHOD FOR PRODUCING SUCH A FILTER ELEMENT

      
Application Number 18027704
Status Pending
Filing Date 2021-08-04
First Publication Date 2024-10-03
Owner Herding GmbH Filtertechnik (Germany)
Inventor
  • Herding, Urs
  • Hajek, Stefan
  • Raabe, Julian

Abstract

An inherently stable, throughflow-porous filter element for filtering foreign substances from a gas stream, comprising a filter body of plastic and having an inflow side and an opposite outflow side, wherein a surface filtration layer is formed on the inflow side, wherein the filter body has a three-dimensional support structure manufactured in an additive manufacturing process, said support structure having cavities through which gas can flow from the inflow side to the outflow side, and wherein the surface filtration layer at least partially fills the cavities of the three-dimensional support structure.

IPC Classes  ?

  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 39/16 - Other self-supporting filtering material of organic material, e.g. synthetic fibres
  • B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
  • B01D 46/52 - Particle separators, e.g. dust precipitators, using filters embodying folded material
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 80/00 - Products made by additive manufacturing

2.

Compressed Air Pulse Cleaning System Without Blow Tube

      
Application Number 17769063
Status Pending
Filing Date 2020-10-13
First Publication Date 2024-03-28
Owner Herding GmbH Filtertechnik (Germany)
Inventor
  • Herding, Walter
  • Herding, Urs
  • Koller, Egid
  • Bethke, Dino
  • Hajek, Stefan
  • Weih, Christoph

Abstract

A filter device including at least one filter element adapted to filter a raw fluid and having a raw fluid side and a clean fluid side, the filter element having a clean fluid outlet arranged on the clean fluid side and extending in a first plane, at least one clean fluid collecting channel into which the clean fluid outlet opens; at least one compressed-air cleaning-off device adapted to generate a pressure pulse for cleaning-off foreign matter adhering to the filter element and to conduct the same through the clean fluid outlet to the filter element, wherein the compressed-air cleaning-off device is adapted to conduct the pressure pulse at least approximately along the first plane to the clean fluid outlet, wherein the compressed-air cleaning-off device comprises a compressed-air supply channel operationally coupled to a clean fluid collecting channel outlet and adapted to charge the clean fluid collecting channel with pressure pulses.

IPC Classes  ?

  • B01D 46/71 - Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
  • B01D 46/44 - Auxiliary equipment or operation thereof controlling filtration
  • B01D 46/62 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series

3.

Filter Element With Gasket Surrounding Filter Head

      
Application Number 17769066
Status Pending
Filing Date 2020-10-13
First Publication Date 2024-03-28
Owner Herding GmbH Filtertechnik (Germany)
Inventor
  • Herding, Walter
  • Herding, Urs
  • Koller, Egid
  • Stauber, Alexander

Abstract

A filter element including a throughflow-porous filter body extending between a head end and a longitudinally opposite foot end, wherein a head structure is formed at the head end of the filter element, the head structure having at least one seal configured to seal the filter element with respect to a filter element holder, wherein the head structure has a sidewall extending basically in the longitudinal direction and the seal is formed on the basically longitudinally extending sidewall of the head structure of the filter element.

IPC Classes  ?

  • B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
  • B01D 46/52 - Particle separators, e.g. dust precipitators, using filters embodying folded material

4.

METHOD TO FORM A DUST COLLECTING LAYER ON A POROUS BODY WITHOUT USING A BINDER

      
Application Number JP2023032092
Publication Number 2024/048781
Status In Force
Filing Date 2023-09-01
Publication Date 2024-03-07
Owner
  • NITTETSU MINING CO., LTD. (Japan)
  • HERDING GMBH FILTERTECHNIK (Germany)
Inventor
  • Matsumoto Hiromichi
  • Ogura Shinichi
  • Nihei Yuji
  • Shinoda Ken
  • Ito Takahiro
  • Kaneko Masanori
  • Hosi Toru
  • Raabe, Dr., Julian
  • Weih, Christoph
  • Hammer, Christian
  • Hajek, Stefan
  • Bethke, Dino
  • Marx, Martina
  • Herding, Dr., Urs

Abstract

To provide a manufacturing method of a filter element in which fine particles constituting a dust-collecting layer are not peeled off and high performance is maintained over a long period of time even when the filter element is scaled up. A layer of fine particles containing low melting point fine particles and small diameter fine particles is deposited and formed on the surface of a filter element material while sucking the filter element material, and the layer of the fine particles is heated by a heating means exemplified by an infrared heater and an oven to sinter the fine particles to form a dust-collecting layer.

IPC Classes  ?

  • B01D 39/16 - Other self-supporting filtering material of organic material, e.g. synthetic fibres

5.

METHOD FOR THE DRY FILTRATION OF A GAS FLOW CARRYING FOREIGN OBJECTS, AND FILTER DEVICE FOR CLEANING RAW GAS CARRYING FOREIGN OBJECTS

      
Application Number 17796095
Status Pending
Filing Date 2021-01-14
First Publication Date 2023-10-19
Owner HERDING GMBH FILTERTECHNIK (Germany)
Inventor
  • Herding, Walter
  • Herding, Urs
  • Dandorfer, Sebastian
  • Hajek, Stefan
  • Bethke, Dino
  • Rabenstein, Klaus
  • Rösch, Maximilian
  • Sehr, Thomas
  • Weiss, Franz

Abstract

A method and a filter device for the dry filtration of a gas flow carrying foreign objects in a filter device for purifying waste gas produced in additive manufacturing technologies, conducting a raw gas flow containing foreign objects into a raw gas space of a filter unit having at least one filter surface separating a raw gas side from a clean gas side, feeding oxidant to a reaction region located on the raw gas side of the filter surface downstream of the filter surface, such that foreign objects contained in material cleaned off from the filter surface and/or in the raw gas flow react with the oxidant in the reaction region to form foreign objects containing oxides.

IPC Classes  ?

  • B01D 46/48 - Removing dust other than cleaning filters
  • B01D 53/76 - Gas phase processes, e.g. by using aerosols
  • B22F 12/70 - Gas flow means
  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 46/84 - Chemical processes for the removal of the retained particles, e.g. by burning by heating only
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling

6.

METHOD FOR THE DRY FILTRATION OF A GAS FLOW CARRYING FOREIGN OBJECTS, AND FILTER DEVICE FOR CLEANING RAW GAS CARRYING FOREIGN OBJECTS

      
Application Number 17796106
Status Pending
Filing Date 2021-01-14
First Publication Date 2023-03-16
Owner HERDING GMBH FILTERTECHNIK (Germany)
Inventor
  • Herding, Walter
  • Herding, Urs
  • Dandorfer, Sebastian
  • Hajek, Stefan
  • Bethke, Dino
  • Rabenstein, Klaus
  • Rösch, Maximilian
  • Sehr, Thomas

Abstract

A method for the dry filtration of a gas flow carrying foreign objects, a filter device for cleaning off waste gas resulting from additive manufacturing technologies, comprises feeding a raw gas flow containing foreign objects into a raw gas space of a filter unit having at least one filter surface separating a raw gas side from a clean gas side; feeding oxidant to a reaction region located on the raw gas side of the filter surface downstream of the filter surface; such that foreign objects contained in material cleaned off from the filter surface and/or in the raw gas flow react with the oxidant in the reaction region to form oxide-containing foreign objects.

IPC Classes  ?

  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 46/84 - Chemical processes for the removal of the retained particles, e.g. by burning by heating only
  • B01D 46/48 - Removing dust other than cleaning filters
  • B01D 46/42 - Auxiliary equipment or operation thereof
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
  • B22F 12/70 - Gas flow means
  • B01J 20/10 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
  • B01J 20/04 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
  • B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties

7.

INHERENTLY STABLE, FLOW-POROUS FILTER ELEMENT AND METHOD FOR PRODUCING SUCH A FILTER ELEMENT

      
Application Number EP2021071814
Publication Number 2022/063470
Status In Force
Filing Date 2021-08-04
Publication Date 2022-03-31
Owner HERDING GMBH FILTERTECHNIK (Germany)
Inventor
  • Herding, Urs
  • Hajek, Stefan
  • Raabe, Julian

Abstract

Described is an inherently stable, flow-porous filter element for filtering foreign substances out of a gas flow, comprising a filter element made of plastic having an inflow side and an opposite outflow side, wherein: a surface filtration layer is formed on the inflow side; the filter element has a three-dimensional support structure produced in an additive manufacturing process, said support structure having cavities through which gas can flow from the inflow side to the outflow side; and the surface filtration layer at least partially fills the voids in the three-dimensional support structure.

IPC Classes  ?

  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 39/16 - Other self-supporting filtering material of organic material, e.g. synthetic fibres
  • B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
  • B01D 46/52 - Particle separators, e.g. dust precipitators, using filters embodying folded material
  • B29C 64/10 - Processes of additive manufacturing
  • B33Y 80/00 - Products made by additive manufacturing

8.

METHOD FOR THE DRY FILTRATION OF A GAS FLOW THAT CARRIES FOREIGN BODIES, AND FILTER DEVICE FOR CLEANING CRUDE GAS THAT CARRIES FOREIGN BODIES

      
Application Number EP2021050701
Publication Number 2021/151680
Status In Force
Filing Date 2021-01-14
Publication Date 2021-08-05
Owner HERDING GMBH FILTERTECHNIK (Germany)
Inventor
  • Herding, Walter
  • Herding, Urs
  • Dandorfer, Sebastian
  • Hajek, Stefan
  • Bethke, Dino
  • Rabenstein, Klaus
  • Rösch, Maximilian
  • Sehr, Thomas
  • Weiß, Franz

Abstract

The invention relates to a method and a filter device for the dry filtration of a gas flow that carries foreign bodies, in particular in a filter device for purifying waste gas produced in additive manufacturing techniques, said method comprising: conducting a crude gas flow (44) containing foreign bodies into a crude gas chamber (15) of a filter unit (12), which has at least one filter surface separating a crude gas side from a clean gas side; feeding an oxidant into a reaction region (24), which lies downstream of the filter surface on the crude gas side, such that foreign bodies contained in the material cleaned from the filter surface and/or the crude gas flow react with the oxidant in the reaction region (24) to form foreign bodies containing oxides.

IPC Classes  ?

  • B01D 45/02 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 46/48 - Removing dust other than cleaning filters
  • B01D 50/00 - Combinations of methods or devices for separating particles from gases or vapours
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling

9.

METHOD FOR THE DRY FILTRATION OF A GAS FLOW THAT CARRIES FOREIGN BODIES, AND FILTER DEVICE FOR CLEANING CRUDE GAS THAT CARRIES FOREIGN BODIES

      
Application Number EP2021050704
Publication Number 2021/151681
Status In Force
Filing Date 2021-01-14
Publication Date 2021-08-05
Owner HERDING GMBH FILTERTECHNIK (Germany)
Inventor
  • Herding, Walter
  • Herding, Urs
  • Dandorfer, Sebastian
  • Hajek, Stefan
  • Bethke, Dino
  • Rabenstein, Klaus
  • Rösch, Maximilian
  • Sehr, Thomas

Abstract

A dry filtration process for a gas flow (44) that carries foreign bodies, in particular in a filter device for purifying waste gas produced in additive manufacturing techniques, said process comprising: feeding a crude gas flow (44) containing foreign bodies into a crude gas chamber (15) of a filter unit, which has at least one filter surface separating a crude gas side from a clean gas side; feeding an oxidant (112) into a reaction region, which lies downstream of the filter surface on the crude gas side, such that foreign bodies contained in the material cleaned from the filter surface and/or the crude gas flow (44) react with the oxidant (112) in the reaction region to form foreign bodies containing oxides.

IPC Classes  ?

  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 45/02 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
  • B01D 46/48 - Removing dust other than cleaning filters
  • B01D 50/00 - Combinations of methods or devices for separating particles from gases or vapours
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling

10.

FILTER DEVICE, USE, AND DRY FILTRATION PROCESS USING SILICA AS THE AUXILIARY FILTRATION SUBSTANCE

      
Application Number EP2020079917
Publication Number 2021/094075
Status In Force
Filing Date 2020-10-23
Publication Date 2021-05-20
Owner HERDING GMBH FILTERTECHNIK (Germany)
Inventor
  • Herding, Walter
  • Herding, Urs
  • Dandorfer, Sebastian
  • Hajek, Stefan
  • Bethke, Dino
  • Rabenstein, Klaus
  • Rösch, Maximilian

Abstract

A dry filtration process for a gas flow (44) containing foreign bodies, in particular in a filter device for purifying waste air arising from additive manufacturing techniques, said process comprising: feeding an untreated-gas flow (44) containing foreign bodies into an untreated-gas chamber (15) of a filter unit having at least one filter surface; feeding an auxiliary filtration substance into the untreated-gas flow (44) and/or to the filter surface; wherein the auxiliary filtration substance has a configuration that allows the suppression of a reaction of the foreign bodies with an oxidizing agent, in particular oxygen; and wherein the auxiliary filtration substance is a silica-based inorganic material.

IPC Classes  ?

  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 51/04 - Amassing the particles, e.g. by flocculation by seeding, e.g. by adding particles

11.

FILTER ELEMENT, FILTER ELEMENT HOLDER FOR A FILTER ELEMENT, A FILTER DEVICE AND A METHOD FOR PRODUCING A FILTER ELEMENT

      
Application Number EP2020078762
Publication Number 2021/074139
Status In Force
Filing Date 2020-10-13
Publication Date 2021-04-22
Owner HERDING GMBH FILTERTECHNIK (Germany)
Inventor
  • Herding, Walter
  • Herding, Urs
  • Koller, Egid
  • Stauber, Alexander

Abstract

The invention relates to a filter element (2) having a throughflow-porous filter body (4) that extends between a head end and a longitudinally opposite foot end; wherein at the head end of the filter element (2) there is formed a head structure (6) which has at least one bearing face seal (10) which is designed to seal the filter element (2) with respect to a filter element holder (26), wherein the head structure (6) has a side wall (8) running essentially in the longitudinal direction and the bearing face seal (10) is formed on this essentially longitudinal side wall (8) of the head structure (6) of the filter element (2).

IPC Classes  ?

  • B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
  • B01D 39/16 - Other self-supporting filtering material of organic material, e.g. synthetic fibres
  • B01D 46/52 - Particle separators, e.g. dust precipitators, using filters embodying folded material

12.

FILTER DEVICE AND METHOD FOR CLEANING A FILTER ELEMENT OF A FILTER DEVICE

      
Application Number EP2020078767
Publication Number 2021/074143
Status In Force
Filing Date 2020-10-13
Publication Date 2021-04-22
Owner HERDING GMBH FILTERTECHNIK (Germany)
Inventor
  • Herding, Walter
  • Herding, Urs
  • Koller, Egid
  • Bethke, Dino
  • Hajek, Stefan
  • Weih, Christoph

Abstract

The present invention relates to a filter device having: at least one filter element designed to filter a dirty fluid, having a dirty fluid side and a clean fluid side, which filter element has a clean fluid outlet which is arranged on the clean fluid side, extends in a first plane, and through which clean fluid is conducted out of the filter element; and at least one compressed-air cleaning device, which is designed to generate a pressure pulse for removing foreign substances adhering to the filter element and to conduct them through the clean fluid outlet to the filter element, the compressed-air cleaning device being designed to conduct the pressure pulse at least approximately along the first plane to the clean fluid outlet.

IPC Classes  ?

  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies

13.

METHOD FOR PRODUCING A COATED FILTER ELEMENT, APPLICATION DEVICE FOR COATING A FILTER BODY, AND COATED FILTER ELEMENT

      
Application Number EP2020078293
Publication Number 2021/069600
Status In Force
Filing Date 2020-10-08
Publication Date 2021-04-15
Owner HERDING GMBH FILTERTECHNIK (Germany)
Inventor
  • Herding, Walter
  • Herding, Urs
  • Weih, Christoph
  • Hajek, Stefan

Abstract

The invention relates to a method for producing a coated filter element (2), comprising the following steps: providing a filter body (4); and thermal spraying of a plastic material (30) onto the filter body (4) by means of an application device (32) such that the thermally sprayed plastic material (30) forms a porous and fluid-permeable surface filtration layer (28) on the filter body (4). The invention also relates to a correspondingly produced filter element.

IPC Classes  ?

  • B01D 39/16 - Other self-supporting filtering material of organic material, e.g. synthetic fibres
  • C23C 4/129 - Flame spraying
  • C23C 4/04 - Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
  • B05D 1/08 - Flame spraying
  • B05B 7/20 - Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating the material to be sprayed by flame or combustion
  • B05D 3/02 - Pretreatment of surfaces to which liquids or other fluent materials are to be appliedAfter-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking

14.

Filter element

      
Application Number 16086180
Grant Number 11529576
Status In Force
Filing Date 2017-03-14
First Publication Date 2020-09-24
Grant Date 2022-12-20
Owner HERDING GMBH FILTERTECHNIK (Germany)
Inventor
  • Herding, Walter
  • Herding, Urs
  • Marx, Martina
  • Hajek, Stefan

Abstract

The invention relates to a filter element having inherent stability and being porous to permit flow therethrough, comprising a filter body which forms a porous sintered structure and is constructed with filter body particles which are at least in part polysulfide particles. In addition, the invention relates to a method of manufacturing such a filter element.

IPC Classes  ?

  • B01D 39/00 - Filtering material for liquid or gaseous fluids
  • B01D 39/16 - Other self-supporting filtering material of organic material, e.g. synthetic fibres
  • B29C 67/00 - Shaping techniques not covered by groups , or

15.

FILTER ELEMENT AND METHOD FOR PRODUCING A FILTER ELEMENT

      
Application Number EP2020057437
Publication Number 2020/187982
Status In Force
Filing Date 2020-03-18
Publication Date 2020-09-24
Owner HERDING GMBH FILTERTECHNIK (Germany)
Inventor
  • Schulz, Armin
  • Weih, Christoph
  • Hajek, Stefan
  • Kuhn, Norbert
  • Raabe, Wolfgang
  • Raabe, Julian
  • Herding, Urs
  • Herding, Walter

Abstract

The invention relates to an inherently stable, flow-porous filter element (1), comprising: a porous filter body (2), which is additively manufactured from plastic, is inherently stable and has an inflow side (8) and an outflow side (9); and a surface filtration layer (14) on the inflow side (8) of the filter body (2). The invention also relates to a method for producing an inherently stable, flow-porous filter element (1), the method comprising: manufacturing a porous filter body (2) from plastic, which filter body is inherently stable and has an inflow side (8) and an outflow side (9), by means of an additive manufacturing method; and forming a surface filtration layer (14) on the inflow side (8) of the filter body (2).

IPC Classes  ?

  • B01D 29/11 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
  • B01D 29/33 - Self-supporting filtering elements arranged for inward flow filtration
  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
  • B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified

16.

FILTER ELEMENT

      
Application Number EP2017055977
Publication Number 2017/157930
Status In Force
Filing Date 2017-03-14
Publication Date 2017-09-21
Owner HERDING GMBH FILTERTECHNIK (Germany)
Inventor
  • Herding, Walter
  • Herding, Urs
  • Marx, Martina
  • Hajek, Stefan

Abstract

The invention relates to an inherently stable flow-porous filter element (30) having a filter body (20) that forms a porous sintered structure and is made up of filter body particles (10, 14) at least some which are polysulphide particles. The invention also relates to a method for producing such a filter element.

IPC Classes  ?

  • B01D 39/16 - Other self-supporting filtering material of organic material, e.g. synthetic fibres

17.

Filter device and filter method

      
Application Number 13821921
Grant Number 09517427
Status In Force
Filing Date 2011-09-05
First Publication Date 2013-10-03
Grant Date 2016-12-13
Owner Herding GMBH Filtertechnik (Germany)
Inventor
  • Herding, Urs
  • Hajek, Stefan

Abstract

A filter device is proposed for cleaning gas entraining foreign bodies, including at least one filter unit having at least one filter surface on a raw gas side to which a raw gas stream containing foreign bodies can be supplied, wherein filtration aids can be supplied to the raw gas stream and/or the filter surface, and wherein filtration aids and/or foreign matter attached to the filter surface can be cleaned off. The filter device additionally includes a fluidized bed arrangement in which a carrier fluid stream can be generated such that cleaned-off filtration aids and/or foreign matter can be held at least in part as filtration aerosol in a surrounding of the filter unit and/or can re-attach to a filter surface.

IPC Classes  ?

  • B01D 46/04 - Cleaning filters
  • B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D 46/38 - Particle separators, e.g. dust precipitators, using loose filtering material the material moving during filtering as fluidised bed
  • B01D 50/00 - Combinations of methods or devices for separating particles from gases or vapours
  • B05B 15/12 - Spray booths

18.

FILTER DEVICE AND FILTER METHOD

      
Application Number EP2011065286
Publication Number 2012/032003
Status In Force
Filing Date 2011-09-05
Publication Date 2012-03-15
Owner HERDING GMBH FILTERTECHNIK (Germany)
Inventor
  • Herding, Urs
  • Hajek, Stefan

Abstract

A filter device (10) is proposed for cleaning gas entraining foreign bodies, comprising: at least one filter unit (12) having at least one filter surface on a dirty gas side, to which filter surface a dirty gas stream (44) containing foreign bodies can be fed, wherein filtration aids can be fed to the dirty gas stream (44) and/or the filter surface, and wherein filtration aids and/or foreign matter attached to the filter surface can be cleaned off. The filter device (10) additionally comprises a fluid bed arrangement (55) in which a carrier fluid stream (54) can be generated, in such a manner that filtration aids and/or foreign matter that are cleaned off can at least in part be held as filtration aerosol in a surrounds of the filter unit (12) and/or can be reattached to a filter surface.

IPC Classes  ?

  • B01D 46/38 - Particle separators, e.g. dust precipitators, using loose filtering material the material moving during filtering as fluidised bed
  • B01D 50/00 - Combinations of methods or devices for separating particles from gases or vapours
  • B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours

19.

HERDING DELTA

      
Application Number 010437945
Status Registered
Filing Date 2011-11-23
Registration Date 2012-04-27
Owner Herding GmbH Filtertechnik (Germany)
NICE Classes  ? 11 - Environmental control apparatus

Goods & Services

Air-filtering apparatus, gas, Exhaust gases and liquids; Structural parts for the aforesaid filtering apparatus; Filter elements for insertion into the aforesaid filtering apparatus.

20.

HEAT-RESISTANT FILTER ELEMENT WITH COATING

      
Application Number EP2008005603
Publication Number 2009/007106
Status In Force
Filing Date 2008-07-09
Publication Date 2009-01-15
Owner HERDING GMBH FILTERTECHNIK (Germany)
Inventor
  • Herding, Walter
  • Hajek, Stefan
  • Raabe, Wolfgang
  • Bethke, Jürgen

Abstract

Heat-resistant, flow-porous, intrinsically stable filter element comprising: (a) an intrinsically stable base body (4) formed from hollow glass beads and/or hollow ceramic beads (10) which are held together by thermoset plastic (12); (b) and a coating (6) with smaller pore size than the base body (4) on the inflow surface of the base body (4), which coating (6) is formed by glass beads (14) which are held together by thermoset plastic.

IPC Classes  ?

  • B01D 39/20 - Other self-supporting filtering material of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires

21.

FILTER ELEMENT WITH COATING FOR SURFACE FILTRATION

      
Document Number 02601058
Status In Force
Filing Date 2006-03-16
Open to Public Date 2006-09-21
Grant Date 2012-09-11
Owner HERDING GMBH FILTERTECHNIK (Germany)
Inventor
  • Hajek, Stefan
  • Herding, Urs
  • Palz, Kurt
  • Raabe, Wolfgang
  • Thurauf, Reiner
  • Meindl, Bernd

Abstract

An inherently stable, flow-porous filter element (2) having a porous coating (10) for surface filtration on its afflux surface, said coating (10) comprising:(a) a main component of particles (12) and/or fibers (22);(b) an inorganic binder component (14; 24) binding the particles (12) and/or the fibers (22) of the main component to each other;(c) an adhesive (16; 26) binding the porous coating (10) to the remainder of the filter element;(d) and an anti-adhesion component (18; 28) mitigating the adhesion of filtered out material to the porous coating and facilitating cleaning of the filter element.

IPC Classes  ?

  • B01D 39/20 - Other self-supporting filtering material of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires

22.

HERDING

      
Application Number 000311407
Status Registered
Filing Date 1996-04-01
Registration Date 1999-01-12
Owner Herding GmbH Filtertechnik (Germany)
NICE Classes  ?
  • 01 - Chemical and biological materials for industrial, scientific and agricultural use
  • 11 - Environmental control apparatus

Goods & Services

Holders for micro-organisms compatible with apparatus mentioned in class 11 (bioreactors). Filter apparatus for air, gases, waste gases and liquids, structural parts for the aforementioned filter apparatus, filter elements compatible with the aforementioned filter apparatus; apparatus (bioreactors) for the biological cleaning of liquids, waste water, gases and air waste, structural parts for the aforementioned apparatus, holders for micro-organisms compatible with the aforementioned apparatus.

23.

Herding

      
Application Number 642979
Status Registered
Filing Date 1995-04-07
Registration Date 1995-04-07
Owner Herding GmbH Filtertechnik (Germany)
NICE Classes  ?
  • 01 - Chemical and biological materials for industrial, scientific and agricultural use
  • 11 - Environmental control apparatus

Goods & Services

Vectors for microorganisms for the apparatus and devices listed in class 11. Filtering devices for air, gases, exhaust gases, and liquids, component parts of the aforesaid filtering devices, filtering elements for incorporation in the aforesaid filtering devices; apparatus (bioreactors) for biological purification of liquids, effluents, gases and exhaust air and parts thereof.

24.

HERDING

      
Serial Number 74658984
Status Registered
Filing Date 1995-04-11
Registration Date 2000-04-11
Owner HERDING GMBH FILTERTECHNIK (Germany)
NICE Classes  ?
  • 01 - Chemical and biological materials for industrial, scientific and agricultural use
  • 11 - Environmental control apparatus

Goods & Services

[ carrier elements for microorganisms for mounting in bioreactors and biological purification apparatus ] filtering units for purifying air, gases, exhaust gas [ and liquids, ] and parts therefor; [ bioreactors for biologically purifying liquids, sewage, gases and discharged air, and parts therefor; ] filter elements for mounting in filtering units for filtering air, gases, exhaust gases [ and liquids; carrier elements for microorganisms for mounting in bioreactors ]