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For the Inventor, By the Inventor

Tokyo, Japan

Mitsui Chemicals, Inc.


USPTO Granted Patents = 1,788



Trademarks = 79

Forward Citations = 9,895

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2,258 inventors (with patents filed for the assignee):

goldMedal Terunori Fujita (45 out of 56 patents)

silverMedal Seiichi Kobayashi (40 out of 72 patents)

bronzeMedal Satoshi Yamasaki (39 out of 40 patents)

4.  Toshiyuki Tsutsui (35 out of 94 patents)

5.  Masaaki Kawasaki (31 out of 59 patents)

6.  Yasushi Tohi (31 out of 32 patents)

7.  Kazuo Kohmura (30 out of 38 patents)

8.  Mamoru Tanaka (28 out of 29 patents)

9.  Junji Saito (28 out of 40 patents)

10.  Masayoshi Yamaguchi (26 out of 30 patents)

11.  Hiroshi Hoya (26 out of 27 patents)

12.  Keiji Okada (26 out of 46 patents)

13.  Koju Okazaki (25 out of 42 patents)

14.  Naoyuki Kakinuma (25 out of 25 patents)

15.  Tadahito Nobori (25 out of 29 patents)


Core Competencies:
Benzotriazole Compound
Electrochemical Device
Lubricating Oil Composition
Polymerizable Composition
Cyclic Olefin-Based Copolymer
Lithium Borate Compound
Optical Material
Pellicle Film
Thermoplastic Elastomer
Polyurethane Resin
Dental Material

1,788 patents:

1. 12502846 - Molded body and method for manufacturing same (2025-12-23),
2. 12497357 - Method of producing polyamine compound and application thereof (2025-12-16),
3. 12486239 - Benzotriazole compound, light absorber, and resin composition (2025-12-02),
4. 12482867 - Non-aqueous electrolyte solution, electrochemical device precursor, electrochemical device, and method of producing electrochemical device (2025-11-25),
5. 12474630 - Pellicle demounting method and pellicle demounting preprocessing device (2025-11-18),
6. 12472820 - Display devices (2025-11-18),
7. 12460149 - Lubricating oil composition (2025-11-04),
8. 12448470 - Polymerizable composition for optical material, molded product, optical material, and plastic lens and method for manufacturing same (2025-10-21),
9. 12441821 - (Meth)acrylate and use thereof (2025-10-14),
10. 12398338 - Viscosity modifier for lubricating oil and lubricating oil composition for hydraulic fluid (2025-08-26),
11. 12392089 - Laminate and food packaging material (2025-08-19),
12. 12386252 - Pellicle film, pellicle, exposure original plate, exposure device, and method for manufacturing pellicle film (2025-08-12),
13. 12384870 - Method for setting polymerization condition and method for manufacturing optical material (2025-08-12),
14. 12379367 - Method for setting polymerization condition and method for manufacturing optical material (2025-08-05),
15. 12378377 - Cyclic olefin-based copolymer composition, varnish, and cross-linked product (2025-08-05),
Mitsui Chemicals, Inc. is a global chemical manufacturer that provides a wide range of innovative products and solutions to various industries including automotive, healthcare, packaging, and more. With a commitment to sustainability and technological innovation, Mitsui Chemicals is dedicated to creating value for society and contributing to a sustainable future.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

1,788 Patents

#64 in Tokyo

#131 in Japan

#550 in the World

...
Tokyo, Japan

Mitsui Chemicals, Inc.

Forward Citations = 9,895

2,258 inventors:

goldMedal Terunori Fujita (45 out of 56 patents)

silverMedal Seiichi Kobayashi (40 out of 72 patents)

bronzeMedal Satoshi Yamasaki (39 out of 40 patents)

4.  Toshiyuki Tsutsui (35 out of 94 patents)

5.  Masaaki Kawasaki (31 out of 59 patents)

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