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For the Inventor, By the Inventor

Osaka, Japan

Sumitomo Chemical Company, Limited


USPTO Granted Patents = 6,893



Trademarks = 93

Forward Citations = 35,752

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4,387 inventors (with patents filed for the assignee):

goldMedal Koji Ichikawa (190 out of 191 patents)

silverMedal Yasunori Uetani (80 out of 82 patents)

bronzeMedal Hisao Yamamoto (75 out of 78 patents)

4.  Ryo Yoshida (74 out of 74 patents)

5.  Gohfu Suzukamo (72 out of 74 patents)

6.  Takashi Omura (71 out of 71 patents)

7.  Eiki Nagano (69 out of 71 patents)

8.  Masayoshi Minai (69 out of 69 patents)

9.  Tatsuro Masuyama (65 out of 65 patents)

10.  Masahito Matsumoto (62 out of 64 patents)

11.  Takashi Sanada (61 out of 63 patents)

12.  Nobuhiro Usui (60 out of 60 patents)

13.  Shinichi Yachigo (57 out of 57 patents)

14.  Toshio Sasaki (54 out of 55 patents)

15.  Katsuzo Kamoshita (52 out of 53 patents)


Core Competencies:
Resist Composition
Semiconductor Laminate
Heterocyclic Compound
Liquid Pesticidal Composition
Solid Electrolyte Layer
Nitride Semiconductor
Epoxy Resin Composition
Piezoelectric Stack
Optical Laminate
Nucleic Acid Oligomer
Nonaqueous Electrolyte Battery
Light Emitting Device

6,893 patents:

1. 12492157 - Method for producing methanol (2025-12-09),
2. 12488985 - Semiconductor laminate and method for manufacturing semiconductor laminate (2025-12-02),
3. 12487528 - Resist composition and method for producing resist pattern (2025-12-02),
4. 12487525 - Salt, acid generator, resist composition and method for producing resist pattern (2025-12-02),
5. 12485147 - Method for producing cell mass including pituitary tissue, and cell mass thereof (2025-12-02),
6. 12478067 - Heterocyclic compound and harmful arthropod pest control composition containing same (2025-11-25),
7. 12471595 - Liquid pesticidal composition (2025-11-18),
8. 12469873 - Solid electrolyte-containing layer (2025-11-11),
9. 12458941 - Powder supply method and production method for thermoplastic resin composition (2025-11-04),
10. 12458023 - Method for controlling pests of farm crops (2025-11-04),
11. 12454463 - Alumina, alumina slurry, alumina film, laminate separator, nonaqueous electrolyte secondary battery and manufacturing method thereof (2025-10-28),
12. 12446281 - Nitride semiconductor substrate manufacturing method, and laminated structure (2025-10-14),
13. 12439917 - Method for controlling phakopsora pachyrhizi having resistance against QoI fungicide (2025-10-14),
14. 12435441 - Method for manufacturing nitride semiconductor substrate, nitride semiconductor substrate, and laminate structure (2025-10-07),
15. 12428549 - Heterophasic propylene polymerization material and olefin polymer (2025-09-30),
Sumitomo Chemical Company, Limited is a Japanese chemical company. It operates through five business sectors: Petrochemicals & Plastics, Energy & Functional Materials, IT-related Chemicals, Health & Crop Sciences, and Pharmaceuticals. The company develops and produces a wide range of chemical products for various industries, including automotive, electronics, agriculture, and healthcare. Sumitomo Chemical focuses on creating sustainable solutions and contributing to society through its innovative technologies and products.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 16 2025

6,893 Patents

#7 in Osaka

#34 in Japan

#117 in the World

...
Osaka, Japan

Sumitomo Chemical Company, Limited

Forward Citations = 35,752

4,387 inventors:

goldMedal Koji Ichikawa (190 out of 191 patents)

silverMedal Yasunori Uetani (80 out of 82 patents)

bronzeMedal Hisao Yamamoto (75 out of 78 patents)

4.  Ryo Yoshida (74 out of 74 patents)

5.  Gohfu Suzukamo (72 out of 74 patents)

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