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For the Inventor, By the Inventor

Tokyo, Japan

Seikagaku Corporation


USPTO Granted Patents = 191



Trademarks = 3

Forward Citations = 934

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248 inventors (with patents filed for the assignee):

goldMedal Koji Kimata (13 out of 22 patents)

silverMedal Kiyoshi Suzuki (11 out of 61 patents)

bronzeMedal Kenji Miyamoto (11 out of 71 patents)

4.  Hiroshi Tamura (10 out of 124 patents)

5.  Tomoya Sato (10 out of 17 patents)

6.  Toshio Oda (9 out of 14 patents)

7.  Akira Asari (8 out of 8 patents)

8.  Akira Tawada (8 out of 8 patents)

9.  Nobuo Sugiura (8 out of 10 patents)

10.  Shigenori Tanaka (7 out of 27 patents)

11.  Nobuo Kobayashi (7 out of 42 patents)

12.  Tsuneo Koji (7 out of 10 patents)

13.  Hisatomo Kunii (7 out of 7 patents)

14.  Keiichi Yoshida (7 out of 47 patents)

15.  Hikaru Mizumura (6 out of 6 patents)


Core Competencies:
Chondroitin Sulfate
Hyaluronic Acid
Pharmaceutical Composition
Recombinant Factor C
Glycosaminoglycan Derivative
Joint Disease Treatment
Ocular Subjective Symptoms
Disc Herniation Therapy
Crosslinked Polysaccharides
Medical Powder Spreading Device
Syringe Design
Endotoxin Measurement

191 patents:

1. 12390415 - Method for improving storage stability (2025-08-19),
2. D1076069 - Cover for medical powder spreading device (2025-05-20),
3. D1071172 - Medical powder ejection device (2025-04-14),
4. D1070073 - Medical powder spreading device (2025-04-08),
5. 12246032 - Stabilized aqueous composition comprising chondroitin sulfate and hyaluronic acid (2025-03-11),
6. 12226463 - Pharmaceutical composition, package and method for producing the same (2025-02-18),
7. 12090228 - Package and method for producing the same (2024-09-17),
8. D1037440 - Syringe (2024-07-30),
9. 11944670 - Therapeutic agent for disc herniation (2024-04-02),
10. 11779593 - Agent for improving ocular subjective symptoms and method thereof (2023-10-10),
11. 11744899 - Pharmaceutical composition containing a hyaluronic acid derivative (2023-09-05),
12. 11738040 - Composition for treating joint disease and kit containing same (2023-08-29),
13. 11648299 - Pharmaceutical composition, package and method for producing the same (2023-05-16),
14. 11499177 - Horseshoe crab factor B variant (2022-11-15),
15. 11266725 - Therapeutic agent for disc herniation (2022-03-08),
Seikagaku Corporation is a Japanese biotechnology company that specializes in developing and manufacturing pharmaceuticals, medical devices, and analyzers. They focus on research and development in the fields of orthopedics, rheumatology, and the central nervous system. With a mission to contribute to the welfare of society, Seikagaku Corporation strives to improve the lives of patients through innovative solutions and advanced healthcare technologies.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

191 Patents

#323 in Tokyo

#710 in Japan

#4,282 in the World

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Tokyo, Japan

Seikagaku Corporation

Forward Citations = 934

248 inventors:

goldMedal Koji Kimata (13 out of 22 patents)

silverMedal Kiyoshi Suzuki (11 out of 61 patents)

bronzeMedal Kenji Miyamoto (11 out of 71 patents)

4.  Hiroshi Tamura (10 out of 124 patents)

5.  Tomoya Sato (10 out of 17 patents)

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