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For the Inventor, By the Inventor

Chiyoda-ku, Japan

Nippon Kayaku Kabushiki Kaisha


USPTO Granted Patents = 775



Trademarks = 28

Forward Citations = 4,657

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1,302 inventors (with patents filed for the assignee):

goldMedal Minoru Yokoshima (30 out of 30 patents)

silverMedal Yasuo Shirasaki (24 out of 26 patents)

bronzeMedal Kouichi Tanaka (22 out of 39 patents)

4.  Hiroaki Ohno (20 out of 30 patents)

5.  Yuichi Sadamitsu (20 out of 20 patents)

6.  Masaaki Ikeda (18 out of 46 patents)

7.  Hiroyuki Matsumoto (17 out of 201 patents)

8.  Katsutoshi Takahashi (17 out of 30 patents)

9.  Akira Kawaguchi (15 out of 24 patents)

10.  Takashi Yoneda (15 out of 16 patents)

11.  Takashi Yoshimoto (14 out of 23 patents)

12.  Masayuki Kitagawa (14 out of 16 patents)

13.  Takahiro Higeta (13 out of 13 patents)

14.  Tatsuhiko Kurakami (13 out of 13 patents)

15.  Seiichi Saito (13 out of 62 patents)


Core Competencies:
Thermally Curable Resin
Epoxy Resin Composition
Heat-Sensitive Recording
Textile Printing Ink
Gas Generator
Liquid-Crystal Composition
Polyimide Resin
Optical Film
Dye-Based Polarizing Film
Photosensitive Resin Composition
Organic Semiconductor Composition
Aerial Vehicle Safety Apparatus

775 patents:

1. 12486371 - Thermally curable resin composition, cured object, resin sheet, prepreg, metal-clad laminate, multilayered printed wiring board, sealing material, fiber-reinforced composite material, adhesive, and semiconductor device (2025-12-02),
2. 12473428 - Epoxy resin mixture, epoxy resin composition and cured product of same (2025-11-18),
3. 12427798 - Heat-sensitive recording composition (2025-09-30),
4. 12421409 - Ink set for textile printing and method of textile printing on fiber (2025-09-23),
5. 12403860 - Gas generator (2025-09-02),
6. 12391783 - Polymer compound, and resin composition containing said compound (2025-08-19),
7. 12378474 - Liquid-crystal composition containing anthraquinone compound and light-modulating element (2025-08-05),
8. 12377810 - Release mechanism of airbag mooring member (2025-08-05),
9. 12371175 - Parachute, safety device, and flight vehicle provided with safety device (2025-07-29),
10. 12370973 - Locking tool (2025-07-29),
11. 12331240 - Anthraquinone compound, liquid crystal composition containing said compound, and light-controlling element (2025-06-17),
12. 12312294 - Anthraquinone compound, liquid crystal composition containing said compound, and dimming element (2025-05-27),
13. 12292589 - Polarized light-emitting film containing water-soluble coumarin compound or salt thereof, polarized light-emitting plate, and display device (2025-05-06),
14. 12285962 - Thermosensitive recording material (2025-04-29),
15. 12264356 - Method for determining sensitivity to SGLT2 inhibitor and sensitivity marker for SGLT2 inhibitor (2025-04-01),
Nippon Kayaku Kabushiki Kaisha is a leading Japanese company that specializes in the manufacture and sale of chemical products. With a rich history dating back to 1916, Nippon Kayaku has developed a diverse portfolio of products that cater to various industries including automotive, healthcare, agrochemicals, electronics, and more. The company is committed to delivering high-quality and innovative solutions to meet the evolving needs of its global customers.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

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775 Patents

#6 in Chiyoda-ku

#267 in Japan

#1,253 in the World

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Chiyoda-ku, Japan

Nippon Kayaku Kabushiki Kaisha

Forward Citations = 4,657

1,302 inventors:

goldMedal Minoru Yokoshima (30 out of 30 patents)

silverMedal Yasuo Shirasaki (24 out of 26 patents)

bronzeMedal Kouichi Tanaka (22 out of 39 patents)

4.  Hiroaki Ohno (20 out of 30 patents)

5.  Yuichi Sadamitsu (20 out of 20 patents)

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