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Daicel Corporation

USPTO Granted Patents = 645

CIPO Patents = 4

EPO Patents = 303

Trademarks = 78

Forward Citations = 1,400

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650 inventors (with patents filed for the assignee):

Masahiko Shimizu (41 out of 74 patents)

Masayuki Yamazaki (35 out of 75 patents)

Tomoharu Kobayashi (25 out of 31 patents)

4. Hiroyuki Miura (20 out of 35 patents)

5. Kenji Fukumoto (19 out of 21 patents)

6. Yuichi Sakanishi (17 out of 21 patents)

7. Shu Shimamoto (17 out of 27 patents)

8. Shinichiro Ukita (16 out of 17 patents)

9. Masaki Hayashi (15 out of 60 patents)

10. Koji Yamamoto (14 out of 79 patents)

11. Yuzo Yamamoto (14 out of 17 patents)

12. Toshiyuki Sakai (13 out of 36 patents)

13. Yoshitaka Sugawara (13 out of 13 patents)

14. Takeshi Fujikawa (13 out of 17 patents)

15. Yasuyuki Akai (13 out of 14 patents)

Core Competencies:

Obesity Suppression

Nanodiamonds

Photoresist Resin

Epoxy Composition

Chromatography Stationary Phase

Optical Isomers

Airbag Devices

Gas Generators

Cellulose Particles

Impact Absorption

Polycarbonate Derivatives

Biomolecule Injection

645 patents: Sort by Forward Citations

1. 12512284 - Electric circuit breaker device (2025-12-30),

2. 12510335 - Gas generator (2025-12-30),

3. 12509432 - Alicyclic epoxy compound product (2025-12-30),

4. 12509351 - Disaggregation of nanodiamond particles (2025-12-30),

5. 12508369 - Needleless injector (2025-12-30),

6. 12498638 - Monomer, resin for photoresist, resin composition for photoresist, and pattern forming method (2025-12-16),

7. 12496996 - Gas generator (2025-12-16),

8. 12485105 - Composition for suppressing obesity (2025-12-02),

9. 12480557 - Shock absorber (2025-11-25),

10. 12479731 - Surface-modified nanodiamonds and method for producing surface-modified nano carbon particles (2025-11-25),

11. 12478568 - Method for producing 1,3-butylene glycol, and 1,3-butylene glycol product (2025-11-25),

12. 12472134 - Method for manufacturing 1,3-butylene glycol, and 1,3-butylene glycol product (2025-11-18),

13. 12472133 - Method for producing 1,3-butylene glycol, and 1,3-butylene glycol product (2025-11-18),

14. 12466930 - Porous cellulose particles and method for producing same (2025-11-11),

15. 12461443 - Photoresist resin, method for producing photoresist resin, photoresist resin composition, and method for forming pattern (2025-11-04),

Daicel Corporation is a Japanese chemical company primarily engaged in the manufacture and sale of organic chemicals, plastics, pyrotechnic devices, and other products. The company operates through various segments, including Cellulose and Related Products, Organic Chemicals, Plastics, Pyrotechnic Devices and Others. Daicel focuses on creating innovative products and technologies to meet the needs of various industries such as automotive, electronics, pharmaceuticals, and more.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

645 Patents

#39 in Osaka

#306 in Japan

#1,489 in the World

Daicel Corporation

Forward Citations = 1,400

650 inventors:

Masahiko Shimizu (41 out of 74 patents)

Masayuki Yamazaki (35 out of 75 patents)

Tomoharu Kobayashi (25 out of 31 patents)

4. Hiroyuki Miura (20 out of 35 patents)

5. Kenji Fukumoto (19 out of 21 patents)

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