|
|
Found results for
 patents
1.
|
Ink composition for writing instrument and writing instrument having the same
| Application Number |
16603212 |
| Grant Number |
12122925 |
| Status |
In Force |
| Filing Date |
2019-02-25 |
| First Publication Date |
2021-03-18 |
| Grant Date |
2024-10-22 |
| Owner |
SUHAN CORPORATION (Republic of Korea)
|
| Inventor |
Kim, Jung Eun
|
Abstract
Embodiments of the present disclosure provides an ink composition for a writing instrument comprising a colorant and water, wherein the ink composition further comprises a thickener including polyethylene glycol or polypropylene glycol having a molecular weight between 200 and 1000 and an acrylic resin having an amine.
IPC Classes ?
- C09D 11/18 - Writing inks for use in ball-point writing instruments
- C08K 5/17 - AminesQuaternary ammonium compounds
- C08L 33/08 - Homopolymers or copolymers of acrylic acid esters
- C08L 71/02 - Polyalkylene oxides
- C09D 11/17 - Writing inks characterised by colouring agents
|
2.
|
Ball pen tip manufacturing machines, ball pen tips, and ball pens
| Application Number |
16568057 |
| Grant Number |
11660905 |
| Status |
In Force |
| Filing Date |
2019-09-11 |
| First Publication Date |
2021-03-11 |
| Grant Date |
2023-05-30 |
| Owner |
- KOTOBUKI & CO. LTD. (Japan)
- SUHAN CORPORATION (Republic of Korea)
- MICROTIP CO., LTD. (Republic of Korea)
|
| Inventor |
Jae, Byun Young
|
Abstract
A method for manufacturing a ball pen tip, in which a spring for biasing a ball is assembled to the ball pen tip, includes punching the ball pen tip by a punch from a rear end of the ball pen tip along a central axis direction of the ball pen tip to form a plastic flow ridge formed by plastic flow upheaving radially inward from an inner peripheral wall surface of the ball pen tip to assemble the spring to the ball pen tip by the plastic flow ridge.
IPC Classes ?
- B43K 15/00 - Assembling, finishing, or repairing pens
- B43K 7/00 - Ball-point pens
- B26F 1/44 - Cutters thereforDies therefor
- B21D 53/76 - Making other particular articles writing or drawing instruments, e.g. writing pens, erasing pens
|
3.
|
Methods for manufacturing ball pen tips, ball pen tip manufacturing machines, ball pen tips and ball pens
| Application Number |
16829861 |
| Grant Number |
10836204 |
| Status |
In Force |
| Filing Date |
2020-03-25 |
| First Publication Date |
2020-11-17 |
| Grant Date |
2020-11-17 |
| Owner |
- KOTOBUKI & CO. LTD. (Japan)
- SUHAN CORPORATION (Republic of Korea)
- MICROTIP CO., LTD. (Republic of Korea)
|
| Inventor |
Jae, Byun Young
|
Abstract
A method for manufacturing a ball pen tip in which a spring for biasing a ball is assembled to the ball pen tip, the method including punching the ball pen tip by a punch from a rear end of the ball pen tip along a central axis direction of the ball pen tip to form a plastic flow ridge formed by a plastic flow upheaving radially inward from an inner peripheral wall surface of the ball pen tip to assemble the spring to the ball pen tip by the plastic flow ridge.
IPC Classes ?
- B43K 15/02 - Automatic machines
- B43K 15/00 - Assembling, finishing, or repairing pens
- B43K 7/00 - Ball-point pens
- B26F 1/44 - Cutters thereforDies therefor
- B21D 53/76 - Making other particular articles writing or drawing instruments, e.g. writing pens, erasing pens
|
4.
|
INK COMPOSITION FOR WRITING INSTRUMENTS AND WRITING INSTRUMENTS COMPRISING SAME
| Application Number |
KR2019002281 |
| Publication Number |
2019/168312 |
| Status |
In Force |
| Filing Date |
2019-02-25 |
| Publication Date |
2019-09-06 |
| Owner |
SUHAN CORPORATION (Republic of Korea)
|
| Inventor |
Kim, Jung Eun
|
Abstract
An ink composition for writing instruments according to a plurality of embodiments of the present invention comprises: a colorant; and water, wherein the composition comprises a polyethylene glycol or polypropylene glycol having a molecular weight of 200 to 1000 and a thickener having an acrylic resin having an amine.
IPC Classes ?
- C09D 11/18 - Writing inks for use in ball-point writing instruments
- C09D 11/17 - Writing inks characterised by colouring agents
|
5.
|
INK COMPOSITION FOR OIL-BASED BALLPOINT PENS
| Application Number |
KR2011003835 |
| Publication Number |
2011/149268 |
| Status |
In Force |
| Filing Date |
2011-05-25 |
| Publication Date |
2011-12-01 |
| Owner |
- SUHAN CORPORATION (Republic of Korea)
- KOTOBUKI & CO., LTD. (Japan)
|
| Inventor |
- Chung, Doo Young
- Lee, Soon Suck
|
Abstract
The present invention relates to an ink composition for oil-based ballpoint pens, featuring a low viscosity between 300 and 3,000 cps to provide soft feel on writing, excellent stability and writing performance even under a low temperature condition, and absence of any leakage (of ink); and oil-based ballpoint pens using the ink composition.
IPC Classes ?
- C09D 11/18 - Writing inks for use in ball-point writing instruments
- B43K 7/01 - Ball-point pens for low viscosity liquid ink
- B43K 7/00 - Ball-point pens
|
|
