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For the Inventor, By the Inventor

Osaka, Japan

Otsuka Chemical Co., Ltd.


USPTO Granted Patents = 167



Trademarks = 1

Forward Citations = 802

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238 inventors (with patents filed for the assignee):

goldMedal Akihiro Nabeshima (11 out of 17 patents)

silverMedal Shigeru Yamago (10 out of 16 patents)

bronzeMedal Minoru Yamamoto (10 out of 10 patents)

4.  Mifuyu Ueno (10 out of 10 patents)

5.  Yasuhiro Kajihara (9 out of 25 patents)

6.  Kazutaka Hirano (8 out of 19 patents)

7.  Tetsuo Nishida (8 out of 26 patents)

8.  Yoichi Nishioka (8 out of 10 patents)

9.  Shinji Nakano (8 out of 11 patents)

10.  Masaki Abe (7 out of 14 patents)

11.  Noriaki Shiina (7 out of 7 patents)

12.  Nobuki Itoi (7 out of 7 patents)

13.  Takashi Kameshima (7 out of 8 patents)

14.  Yuji Tada (7 out of 21 patents)

15.  Tadao Yabuhara (7 out of 8 patents)


Core Competencies:
Liquid Crystal Polymer
Rubber Composition
Electrolytic Solution
Composite Laminate
Friction Material
Organic Tellurium Compound
Block Copolymer
Nonaqueous Electrolytic Solution
Additive for Rubber
Crystals Production Method
Exhaust Gas Purification
Biofilm Inhibitor

167 patents:

1. 12480052 - Liquid crystal polymer composition and liquid crystal polymer molded article (2025-11-25),
2. 12473422 - Rubber composition, tire, and additive for rubber (2025-11-18),
3. 12404233 - Crystals of 3-hydroxy-N'-(1,3-dimethylbutylidene)-2-naphthoic acid hydrazide and production method for the same (2025-09-02),
4. 12359043 - Liquid-crystal polymer composition, molded liquid-crystal polymer, and electrical/electronic appliance (2025-07-15),
5. 12344788 - Liquid crystal polymer composition, liquid crystal polymer molded body, and electrical and electronic equipment (2025-07-01),
6. 12319036 - Composite laminate and method for producing same (2025-06-03),
7. 12292911 - Content processing method and computer-readable medium (2025-05-06),
8. 12275836 - Sulfanyl sulfonic acid compound, viscoelastic modifier, rubber composition, and vulcanized rubber production method (2025-04-14),
9. 12240796 - Crystals and production method for the same (2025-03-04),
10. 12195661 - Liquid crystal polymer composition, liquid crystal polymer molded body, and camera module (2025-01-14),
11. 11958876 - Carbacyclic phosphatidic acid compound (2024-04-16),
12. 11772982 - Potassium titanate powder, method for producing same, friction modifier, resin composition, friction material, and friction member (2023-10-03),
13. 11718732 - Resin composition, filament and resin powder for three-dimensional printer, and shaped object and production process therefor (2023-08-08),
14. 11713294 - Method for producing organic tellurium compound and method for producing vinyl polymer (2023-08-01),
15. 11708480 - Rubber composition, tire, additive and hydrazide compound (2023-07-25),
Otsuka Chemical Co., Ltd. is a leading global chemical company offering a wide range of products and solutions. With a strong focus on innovation, sustainability, and customer satisfaction, Otsuka Chemical serves various industries including automotive, electronics, construction, and healthcare. Their diverse product portfolio includes functional chemicals, resins, coating materials, and more. By combining technical expertise with a commitment to excellence, Otsuka Chemical continues to contribute to the advancement of industries worldwide.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 23 2025

167 Patents

#80 in Osaka

#772 in Japan

#4,807 in the World

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Osaka, Japan

Otsuka Chemical Co., Ltd.

Forward Citations = 802

238 inventors:

goldMedal Akihiro Nabeshima (11 out of 17 patents)

silverMedal Shigeru Yamago (10 out of 16 patents)

bronzeMedal Minoru Yamamoto (10 out of 10 patents)

4.  Mifuyu Ueno (10 out of 10 patents)

5.  Yasuhiro Kajihara (9 out of 25 patents)

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