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Tosoh Corporation

USPTO Granted Patents = 896

CIPO Patents = 6

EPO Patents = 259

Trademarks = 65

Forward Citations = 6,687

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1,051 inventors (with patents filed for the assignee):

Hiroshi Inoue (27 out of 52 patents)

Takahiko Ishiguro (24 out of 25 patents)

Hideto Kuramochi (23 out of 24 patents)

4. Koji Tsukuma (23 out of 30 patents)

5. Yutaka Tamano (22 out of 24 patents)

6. Toshikazu Kato (22 out of 25 patents)

7. Toru Doi (21 out of 21 patents)

8. Noriaki Oshima (20 out of 20 patents)

9. Akihiro Yano (20 out of 20 patents)

10. Hidechika Hayashi (19 out of 21 patents)

11. Hiroyuki Fujisaki (17 out of 17 patents)

12. Kazuhiko Sekizawa (17 out of 21 patents)

13. Masao Nakano (16 out of 30 patents)

14. Shigeru Hirano (15 out of 49 patents)

15. Masami Mesuda (15 out of 15 patents)

Core Competencies:

Electrolytic Manganese Dioxide

Gallium Nitride

Polyurethane Resin

Zeolite Composition

Sputtering Target

Chromatography Column

Hydrocarbon Adsorbent

Titanium Complex

Fluororesin Particles

Self-Emulsifying Polyisocyanate

Sintered Body

Organic Semiconductor

896 patents: Sort by Forward Citations

1. 12522679 - Method for producing fluororesin (2026-01-13),

2. 12515952 - Gallium nitride particles and method for producing same (2026-01-06),

3. 12514803 - Deodorant (2026-01-06),

4. 12448300 - Electrolytic manganese dioxide, method for manufacturing same, and use thereof (2025-10-21),

5. 12434463 - Stretched polyethylene film for lamination (2025-10-07),

6. 12428555 - Resin composition and molded article obtained using this resin composition (2025-09-30),

7. 12421259 - Titanium complex, method for producing same, and method for producing titanium-containing thin film (2025-09-23),

8. 12410101 - Gallium nitride-based sintered body and method for manufacturing same (2025-09-09),

9. 12409589 - Metal member-polyarylene sulfide resin member complex and production method therefor (2025-09-09),

10. 12404180 - Highly wear-resistant zeolite molded article, and method for manufacturing same (2025-09-02),

11. 12398223 - Method for producing fluororesin particles (2025-08-26),

12. 12392025 - Method for producing chromium sintered body, method for producing sputtering target, and method for producing substrate with chromium film (2025-08-19),

13. 12391621 - Sintered body, powder and method for producing the same (2025-08-19),

14. 12385126 - Sputtering target, method for producing same, and method for producing sputtering film using sputtering target (2025-08-12),

15. 12384687 - Method for producing AEI zeolite (2025-08-12),

Tosoh Corporation is a Japanese multinational chemical company. It specializes in the production and distribution of various chemical products, including petrochemicals, specialty polymers, and fine chemicals. With a strong focus on innovation and technology, Tosoh Corporation strives to provide high-quality solutions for industries such as automotive, electronics, and pharmaceuticals. Their commitment to sustainability and corporate social responsibility is evident in their efforts to develop environmentally friendly products and reduce their carbon footprint.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 13 2026

896 Patents

#1 in Shunan

#243 in Japan

#1,108 in the World

Tosoh Corporation

Forward Citations = 6,687

1,051 inventors:

Hiroshi Inoue (27 out of 52 patents)

Takahiko Ishiguro (24 out of 25 patents)

Hideto Kuramochi (23 out of 24 patents)

4. Koji Tsukuma (23 out of 30 patents)

5. Yutaka Tamano (22 out of 24 patents)

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