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For the Inventor, By the Inventor

JP

Kowa Company Limited


USPTO Granted Patents = 590



Trademarks = 183

Forward Citations = 4,967

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685 inventors (with patents filed for the assignee):

goldMedal Kimiyuki Shibuya (43 out of 43 patents)

silverMedal Tadaaki Ohgiya (32 out of 32 patents)

bronzeMedal Seiichi Sato (30 out of 52 patents)

4.  Yoshinori Kyotani (27 out of 27 patents)

5.  Masahiro Tamura (25 out of 115 patents)

6.  Masami Shiratsuchi (25 out of 25 patents)

7.  Yukiyoshi Yamazaki (23 out of 23 patents)

8.  Hiroyuki Ishiwata (22 out of 22 patents)

9.  Katsumi Yabusaki (22 out of 26 patents)

10.  Toru Miura (20 out of 57 patents)

11.  Takayoshi Suzuki (20 out of 65 patents)

12.  Toshihito Mori (19 out of 19 patents)

13.  Takahiro Kitamura (18 out of 21 patents)

14.  Takuya Hara (17 out of 46 patents)

15.  Takeshi Doi (16 out of 16 patents)


Core Competencies:
Image Analysis
Fiber-Reinforced Composite
Bagworm Silk Thread
Ophthalmic Imaging
Industrial Camera
Pharmaceutical Composition
Tear Fluid Evaluation
Toric Intraocular Lens
Non-Cellular Dental Tissue
Glaucoma Testing
Dynamic Tear Fluid Evaluation
Dyslipidemia Treatment

590 patents:

1. 12491067 - Multifocal diffractive lens (2025-12-09),
2. 12484559 - Bag worm nest material (2025-12-02),
3. 12477074 - Image analysis method, learning image or analysis image generation method, learned model generation method, image analysis apparatus, and image analysis program (2025-11-18),
4. 12467170 - Fiber-reinforced composite material and method for producing the same (2025-11-11),
5. 12408643 - Apparatus for producing a bagworm silk thread, and method of producing long bagworm silk thread (2025-09-09),
6. 12302875 - Egg collection device for bagworm moth and breeding method and egg collection method of bagworm moth using the same (2025-05-20),
7. D1073769 - Camera lens (2025-05-06),
8. 12283044 - Ophthalmic image processing method, ophthalmic image processing device, and ophthalmic image processing program (2025-04-21),
9. 12192610 - Imaging device with illumination unit featuring light shielding component (2025-01-07),
10. 12186413 - Non-cellular root canal filler and non-cellular dental tissue regeneration promotion kit (2025-01-07),
11. 12116700 - Apparatus for collecting bagworm silk thread and method for producing long bagworm silk thread (2024-10-15),
12. 12042483 - Prophylactic and therapeutic drug for nonalcoholic fatty liver disease (2024-07-23),
13. 12037708 - Method for producing thread bundle of bagworm silk thread (2024-07-16),
14. 11998274 - Ophthalmic photographing apparatus (2024-06-04),
15. 11969487 - Non-cellular root canal filling material and non-cellular dental tissue regeneration promoting kit (2024-04-30),
Kowa Company Limited is a global company that specializes in the manufacturing and sales of various products in sectors such as pharmaceuticals, healthcare, electronics, and textiles. With a history of over 120 years, Kowa is committed to providing innovative solutions and high-quality products to meet the diverse needs of customers worldwide.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

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590 Patents

#10 in

#327 in Japan

#1,600 in the World

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JP

Kowa Company Limited

Forward Citations = 4,967

685 inventors:

goldMedal Kimiyuki Shibuya (43 out of 43 patents)

silverMedal Tadaaki Ohgiya (32 out of 32 patents)

bronzeMedal Seiichi Sato (30 out of 52 patents)

4.  Yoshinori Kyotani (27 out of 27 patents)

5.  Masahiro Tamura (25 out of 115 patents)

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