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Sumiden Opcom, Ltd.

USPTO Granted Patents = 14

Forward Citations = 175

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24 inventors (with patents filed for the assignee):

Kazuhiko Arimoto (12 out of 12 patents)

Hiroshi Suganuma (10 out of 57 patents)

Hiroaki Takimoto (10 out of 22 patents)

4. Hiroshi Yokota (5 out of 69 patents)

5. Tomoyuki Hattori (4 out of 40 patents)

6. Junichi Yoshikawa (4 out of 6 patents)

7. Takeo Komiya (2 out of 10 patents)

8. Keiji Osaka (2 out of 14 patents)

9. Yasuo Asano (2 out of 9 patents)

10. Masumi Fukuma (2 out of 10 patents)

11. Hidetoshi Takasugi (2 out of 3 patents)

12. Toshiyuki Watanabe (1 out of 71 patents)

13. Tomomi Sano (1 out of 39 patents)

14. Eisuke Sasaoka (1 out of 109 patents)

15. Hisanobu Tanigawa (1 out of 2 patents)

14 patents: Sort by Forward Citations

1. 7050673 - Temperature control device and arrayed waveguide grating optical wavelength multiplexer/demultiplexer (2006-05-23),

2. 5777867 - Electric discharge method and apparatus (1998-07-07),

3. 5590227 - Optical connector apparatus (1996-12-31),

4. 5418872 - Optical connector connecting apparatus and optical connector connecting (1995-05-23),

5. 5395101 - Clamp for use in optical fiber coupler manufacturing apparatus (1995-03-07),

6. 5329600 - Reflection monitor optical fiber coupler manufacturing system and method (1994-07-12),

7. 5318610 - Fiber coupler manufacturing apparatus having an automatic breaking test (1994-06-07),

8. 5309536 - Process for producing an optical fiber coupler (1994-05-03),

9. 5306323 - Fiber coupler manufacturing apparatus having an automatic breaking test (1994-04-26),

10. 5261018 - Optical-coupler reinforcing material and optical-coupler reinforcing (1993-11-09),

11. 5247598 - Reinforcing apparatus for optical-fiber coupler (1993-09-21),

12. 5208883 - Method of reinforcing optical fiber coupler (1993-05-04),

13. 5205851 - Method and apparatus for producing optical fiber coupler (1993-04-27),

14. 5176730 - Method of producing optical-fiber coupler (1993-01-05),

Sumiden Opcom, Ltd. is a leading manufacturer of optical fiber and cable products. With a strong focus on research and development, Sumiden Opcom delivers high-quality solutions for telecommunications, data communications, and industrial applications. The company is known for its innovation, reliability, and commitment to customer satisfaction.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

14 Patents

#1,397 in Tokyo

#3,493 in Japan

#40,937 in the World

Sumiden Opcom, Ltd.

Forward Citations = 175

24 inventors:

Kazuhiko Arimoto (12 out of 12 patents)

Hiroshi Suganuma (10 out of 57 patents)

Hiroaki Takimoto (10 out of 22 patents)

4. Hiroshi Yokota (5 out of 69 patents)

5. Tomoyuki Hattori (4 out of 40 patents)

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