For the Inventor, By the Inventor

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Hakusan Corporation

USPTO Granted Patents = 16

% Expired Patents = 6.3

CIPO Patents = 1

EPO Patents = 3

Trademarks = 6

Forward Citations = 4

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24 inventors (with patents filed for the assignee):

Motohito Takezaki (5 out of 5 patents)

Shohei Ueno (5 out of 6 patents)

Moriaki Kobayashi (4 out of 5 patents)

4. Minoru Yoshida (2 out of 133 patents)

5. Hideki Kamitsuna (1 out of 7 patents)

6. Li-Yun Chen (1 out of 4 patents)

7. Shigeo Hirose (1 out of 17 patents)

8. Ryo Nagase (1 out of 3 patents)

9. Kazumasa Tsukada (1 out of 2 patents)

10. Shigeyuki Tsurumi (1 out of 1 patent)

11. Kazumasa Yasuda (1 out of 1 patent)

12. Takeshi Sotome (1 out of 1 patent)

13. Mikio Koyano (1 out of 3 patents)

14. Takeshi Toyoda (1 out of 1 patent)

15. Akinari Matoba (1 out of 1 patent)

16 patents: Sort by Forward Citations

1. 12736759 - Optical fiber assembly, plate, and optical module (2026-09-15),

2. 12674943 - Multi-fiber optical connector ferrule and optical module (2026-07-07),

3. 12624973 - Optical fiber sensor utilizing faraday rotator mirrors and measuring system using the same (2026-05-12),

4. D1117080 - Optical fiber connector (2026-03-10),

5. D1115707 - Optical fiber connector (2026-03-03),

6. D1113754 - Ferrule holder for optical fiber connectors (2026-02-17),

7. D1113753 - Ferrule holder for optical fiber connectors (2026-02-17),

8. 12535640 - Optical fiber termination structure, optical connection component and hollow-core optical fiber (2026-01-27),

9. D1109702 - Clip for optical fiber connectors (2026-01-20),

10. D1102390 - Optical fiber connector (2025-11-18),

11. D1102389 - Optical connector (2025-11-18),

12. 12397452 - Long arm (2025-08-26),

13. 11520108 - Optic fiber connecting device and optic fiber adaptor thereof (2022-12-06),

14. 11502235 - Thermoelectric material and thermoelectric module (2022-11-15),

15. 9273948 - Optical fiber sensor (2016-03-01),

Hakusan Corporation is a leading global provider of innovative solutions focusing on precision components for various industries. With over 50 years of experience, Hakusan specializes in manufacturing high-quality products including optical lenses, cameras, and medical devices. The company is committed to delivering cutting-edge technology and excellent customer service to meet the diverse needs of its clients.

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

Company Badge

USPTO Data Jan 1 1976 - Sep 15 2026

16 Patents

#1,496 in Tokyo

#3,333 in Japan

#37,717 in the World

Hakusan Corporation

Forward Citations = 4

24 inventors:

Motohito Takezaki (5 out of 5 patents)

Shohei Ueno (5 out of 6 patents)

Moriaki Kobayashi (4 out of 5 patents)

4. Minoru Yoshida (2 out of 133 patents)

5. Hideki Kamitsuna (1 out of 7 patents)

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