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Somar Corporation

USPTO Granted Patents = 216

EPO Patents = 2

Trademarks = 9

Forward Citations = 1,375

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176 inventors (with patents filed for the assignee):

Fumio Hamamura (26 out of 26 patents)

Shigeo Sumi (22 out of 22 patents)

Mitsuhiro Seki (18 out of 20 patents)

4. Sigeo Sumi (14 out of 14 patents)

5. Yoji Washizaki (14 out of 14 patents)

6. Hiroshi Taguchi (13 out of 24 patents)

7. Kunimitsu Matsuzaki (13 out of 13 patents)

8. Katsuji Kitagawa (12 out of 12 patents)

9. Naoki Sakazume (11 out of 11 patents)

10. Yoshihiro Motoki (10 out of 10 patents)

11. Kazuya Ono (9 out of 41 patents)

12. Ichiro Akutagawa (9 out of 9 patents)

13. Hirohisa Ishizaki (8 out of 8 patents)

14. Akira Ochiai (8 out of 8 patents)

15. Hiroshi Maruyama (8 out of 8 patents)

Core Competencies:

Magnetic Fluid

UV Curable Composition

Thermosetting Resin

Cell Culture Method

Epoxy Powder Coating

Adhesive Sheet

Film Applying Apparatus

Polyimide Copolymer

Germicidal Composition

Distance Measuring Device

Light Shielding Member

Golf Club Shaft

216 patents: Sort by Forward Citations

1. 12730358 - Lens hood (2026-09-08),

2. 12693578 - Photographing booth construction kit (2026-07-28),

3. 12693457 - Black light shielding member (2026-07-28),

4. 12553007 - Magnetic viscous fluid and mechanical device (2026-02-17),

5. 12539496 - Liquid composition, membrane, and product comprising membrane (2026-02-03),

6. 12534683 - Magnetic viscous fluid and mechanical device (2026-01-27),

7. 12480069 - Magnetic viscous fluid and mechanical device (2025-11-25),

8. 12419443 - Furniture for, inter alia, appreciating article (2025-09-23),

9. 12326582 - Light shielding member (2025-06-10),

10. 12282139 - Distance measuring device (2025-04-21),

11. 12227675 - UV curable composition, and UV curable sheet using same (2025-02-18),

12. 12209211 - UV curable resin composition and UV curable sheet (2025-01-28),

13. 11908601 - Magnetic responsiveness composite material and composition including the composite material (2024-02-20),

14. 11614571 - Black light shielding member (2023-03-28),

15. 11608448 - Thermosetting powder coating material, coating film using the coating material, and coated body comprising the coating film (2023-03-21),

Somar Corporation, headquartered in Tokyo, Japan, specializes in the development and manufacturing of advanced polymer compositions. The company focuses on innovative technologies such as magnetic fluids, UV curable compositions, and thermosetting resins. Somar's expertise extends to various applications, including epoxy powder coatings and adhesive sheets, as well as specialized methods for cell culture. Their commitment to research and development positions them as a leader in polymer technology, catering to diverse industrial needs.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

Somar Corporation

216 Patents

#337 in Tokyo

#674 in Japan

#3,961 in the World

Somar Corporation

Forward Citations = 1,375

176 inventors:

Fumio Hamamura (26 out of 26 patents)

Shigeo Sumi (22 out of 22 patents)

Mitsuhiro Seki (18 out of 20 patents)

4. Sigeo Sumi (14 out of 14 patents)

5. Yoji Washizaki (14 out of 14 patents)

Please report any incorrect information to [email protected]

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