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Sumiden Opcom, Ltd.

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USPTO Granted Patents = 14

% Expired Patents = 7.1

Forward Citations = 176

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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 72 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),

Company Overview

Sumiden Opcom, Ltd. is a Tokyo-based company specializing in advanced optical communication technologies. The organization focuses on the development and manufacturing of high-performance optical fibers and related components, catering to the telecommunications and data transmission sectors. With a commitment to innovation, Sumiden Opcom plays a significant role in enhancing connectivity solutions, contributing to the evolving landscape of communication infrastructure in Japan and beyond.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

14 Patents

#1,599 in Tokyo

#3,584 in Japan

#42,290 in the World

Sumiden Opcom, Ltd.

Forward Citations = 176

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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sumiden Opcom, Ltd.. Retrieved from https://idiyas.com/company/sumiden-opcom

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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