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For the Inventor, By the Inventor

Tokyo, Japan

Tsubota Laboratory, Inc.

Calculating rank
USPTO Granted Patents = 12


Forward Citations = 61

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17 inventors (with patents filed for the assignee):

goldMedal Kazuo Tsubota (9 out of 22 patents)

silverMedal Toshihide Kurihara (8 out of 11 patents)

bronzeMedal Hidemasa Torii (6 out of 6 patents)

4.  Masahiko Yamakawa (2 out of 34 patents)

5.  Kazuno Negishi (2 out of 2 patents)

6.  Daisuke Kaneda (2 out of 5 patents)

7.  Emi Nishimura (1 out of 4 patents)

8.  Akio Koike (1 out of 44 patents)

9.  Masamichi Tanida (1 out of 14 patents)

10.  Shinichi Ikeda (1 out of 17 patents)

11.  Kensuke Nagai (1 out of 24 patents)

12.  Tetsuya Nakashima (1 out of 33 patents)

13.  Yutaka Kuroiwa (1 out of 17 patents)

14.  Hiroyuki Hijiya (1 out of 20 patents)

15.  Manabu Nishizawa (1 out of 48 patents)


12 patents:

1. 12758510 - Prophylactic agent, ameliorating agent, and therapeutic agent for dry eye (2026-10-13),
2. 12478597 - Mouse myopia-induced model and endoplasmic reticulum stress suppressant for preventing and suppressing myopia (2025-11-25),
3. D1067314 - Temple for eyeglasses (2025-03-18),
4. 12023513 - Light source for myopia prevention article and method of using light source for myopia prevention article (2024-07-02),
5. 11813299 - Composition and functional food for preventing myopia (2023-11-14),
6. D958065 - Charger (2022-07-19),
7. 11007375 - Light source for myopia prevention article and method of using light source for myopia prevention article (2021-05-18),
8. 10866433 - Optical element (2020-12-15),
9. 10865134 - Glass (2020-12-15),
10. 10823982 - Myopia treatment device (2020-11-03),
11. 10660182 - Display system, electronic device, and lighting system (2020-05-19),
12. 10133092 - Myopia prevention device (2018-11-20),
Company Overview
Tsubota Laboratory, Inc. is a Tokyo-based company specializing in advanced optical technologies and innovative solutions for various industries. The organization focuses on the development and manufacturing of high-quality optical devices, including lenses and other components that enhance visual performance. With a commitment to research and development, Tsubota Laboratory aims to push the boundaries of optical science, contributing to sectors such as healthcare, consumer electronics, and industrial applications.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

12 Patents

#1,730 in Tokyo

#3,938 in Japan

#48,235 in the World

Tokyo, JP
Tokyo, Japan

Tsubota Laboratory, Inc.

Forward Citations = 61

17 inventors:

goldMedal Kazuo Tsubota (9 out of 22 patents)

silverMedal Toshihide Kurihara (8 out of 11 patents)

bronzeMedal Hidemasa Torii (6 out of 6 patents)

4.  Masahiko Yamakawa (2 out of 34 patents)

5.  Kazuno Negishi (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tsubota Laboratory, Inc.. Retrieved from https://idiyas.com/company/tsubota-laboratory

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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