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For the Inventor, By the Inventor

Tokyo, Japan

Dainippon Ink and Chemicals, Incorporated


USPTO Granted Patents = 630



Trademarks = 12

Forward Citations = 6,599

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1,008 inventors (with patents filed for the assignee):

goldMedal Haruyoshi Takatsu (57 out of 69 patents)

silverMedal Kiyofumi Takeuchi (25 out of 43 patents)

bronzeMedal Gerwald F Grahe (22 out of 23 patents)

4.  Sadao Takehara (21 out of 23 patents)

5.  Yutaka Hashimoto (19 out of 20 patents)

6.  Makoto Sasaki (19 out of 21 patents)

7.  Hisato Sato (18 out of 23 patents)

8.  Masataka Ooka (17 out of 17 patents)

9.  Hidetsugu Takagaki (16 out of 18 patents)

10.  Kiyohumi Takeuchi (16 out of 17 patents)

11.  Noboru Okoshi (16 out of 16 patents)

12.  Yasuyuki Tanaka (15 out of 125 patents)

13.  Masashi Osawa (14 out of 21 patents)

14.  Rainer Bruno Frings (13 out of 15 patents)

15.  Katsuji Takahashi (11 out of 17 patents)


Core Competencies:
Aqueous Pigment Dispersion
Ink-Jet Ink Composition
Epoxy Resin Composition
Nematic Liquid Crystal Composition
Fuel Cell Separator
Photocurable Composition
Hydraulic Transfer Film
Polyurethane Foam Sheet
Color-Designating System
Liquid Crystal Display Element
Water-Based Coating Material
Curable Resin Compositions

630 patents:

1. 8729153 - Aqueous pigment dispersion for ink-jet ink and ink-jet ink composition (2014-05-20),
2. 8477267 - Light-condensing film, liquid-crystal panel and backlight as well as manufacturing process for light-condensing film (2013-07-02),
3. 8440781 - Epdxy resin composition and cured article thereof, semiconductor encapsulation material, novel phenol resin, and novel epdoxy resin (2013-05-14),
4. 8420749 - Epoxy resin composition and cured article thereof, semiconductor encapsulation material, novel phenol resin, and novel epoxy resin (2013-04-16),
5. 8383743 - Ink composition for jet printer (2013-02-26),
6. 8263714 - Epoxy resin composition, cured article thereof, semiconductor sealing material, novel phenol resin, novel epoxy resin, method for producing novel phenol resin, and method for producing novel epoxy resin (2012-09-11),
7. 8217095 - Active energy ray-curable ink-jet printing ink (2012-07-10),
8. 8171956 - Liquid supply method and apparatus (2012-05-08),
9. 8163820 - Process for producing aqueous pigment dispersions for ink-jet recording (2012-04-24),
10. 8159784 - Magnetic recording medium and production method thereof (2012-04-17),
11. 8084567 - Epoxy resin composition and cured article thereof, novel epoxy resin and production method thereof, and novel phenol resin (2011-12-27),
12. 8013049 - Method for producing core-shell type highly liquid absorbent resin particles (2011-09-06),
13. 8003006 - Difluorobenzene derivative and nematic liquid crystal composition using the same (2011-08-23),
14. 7985822 - Epoxy resin composition,cured article thereof, semiconductor sealing material, novel phenol resin, novel epoxy resin,method for producing novel phenol resin, and method for producing novel epoxy resin (2011-07-26),
15. 7960065 - Separator for fuel cell, method for producing the same, and fuel cell (2011-06-14),
Dainippon Ink and Chemicals, Incorporated is a leading manufacturer and supplier of printing inks, graphic arts materials, and specialty chemicals. With a long-established history of over 140 years, the company provides high-quality products and solutions to various industries such as packaging, electronics, automotive, and more. Their commitment to innovation, sustainability, and customer satisfaction has made them a trusted partner in the global market.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

630 Patents

#133 in Tokyo

#308 in Japan

#1,517 in the World

...
Tokyo, Japan

Dainippon Ink and Chemicals, Incorporated

Forward Citations = 6,599

1,008 inventors:

goldMedal Haruyoshi Takatsu (57 out of 69 patents)

silverMedal Kiyofumi Takeuchi (25 out of 43 patents)

bronzeMedal Gerwald F Grahe (22 out of 23 patents)

4.  Sadao Takehara (21 out of 23 patents)

5.  Yutaka Hashimoto (19 out of 20 patents)

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