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Kanagawa, Japan

Opnext Japan, Inc.

USPTO Granted Patents = 134

% Expired Patents = 21.6

EPO Patents = 9

Forward Citations = 586

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182 inventors (with patents filed for the assignee):

Osamu Kagaya (14 out of 84 patents)

Shigeru Tokita (13 out of 16 patents)

Kazumi Kawamoto (12 out of 30 patents)

4. Hideyuki Kuwano (11 out of 15 patents)

5. Tomonobu Tsuchiya (10 out of 30 patents)

6. Naoki Matsushima (10 out of 38 patents)

7. Masahiro Aoki (9 out of 51 patents)

8. Kazunori Shinoda (8 out of 31 patents)

9. Kazuhiko Naoe (8 out of 8 patents)

10. Hideo Arimoto (7 out of 21 patents)

11. Michihide Sasada (7 out of 15 patents)

12. Hiroo Matsue (7 out of 8 patents)

13. Masanobu Okayasu (7 out of 7 patents)

14. Yoshiaki Niwa (7 out of 7 patents)

15. Shigehisa Tanaka (6 out of 22 patents)

Core Competencies:

Optical Transceiver

Wavelength Monitor

Optical Module

Semiconductor Laser

Optical Receiver

Tunable Filter

Opto-Semiconductor

Optical Modulator

Nitride Semiconductor

Photodetector

Transmission Module

Communication Device

134 patents: Sort by Forward Citations

1. 8313251 - Optical transceiver and projection covering member (2012-11-20),

2. 8275011 - Optical transmission module, wavelength monitor, and wavelength drift detection method (2012-09-25),

3. 8218973 - Optical transmitter device and optical transmitter module (2012-07-10),

4. 8213472 - Optical transmitter and optical communications device (2012-07-03),

5. 8204351 - Optical module (2012-06-19),

6. 8179931 - Wavelength tunable filter and wavelength tunable laser module (2012-05-15),

7. 8131158 - Optical transmission circuit (2012-03-06),

8. 8124432 - Nitride semiconductor optical element and manufacturing method thereof (2012-02-28),

9. 8118498 - Optical receptacle, optical module, and method of manufacturing an optical module (2012-02-21),

10. 8107823 - Optical transmission module (2012-01-31),

11. 8106408 - Optical semiconductor device with flexible substrate (2012-01-31),

12. 8098998 - Optical transmitter (2012-01-17),

13. 8077750 - Optical transmitting module and optical transmitting device (2011-12-13),

14. 8068526 - Semiconductor optical device (2011-11-29),

15. 8000364 - Nitride semiconductor light emitting device and method of manufacturing the same (2011-08-16),

Company Overview

Opnext Japan, Inc. is a prominent player in the optical communication sector, specializing in the development and manufacturing of advanced optical transceivers and modules. The company focuses on a range of core technologies, including semiconductor lasers, optical receivers, and tunable filters, which are essential for high-speed data transmission and communication networks. Based in Kanagawa, Japan, Opnext is committed to innovation in opto-semiconductor technologies, contributing significantly to the evolution of optical communication systems globally.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

134 Patents

#32 in Kanagawa

#924 in Japan

#6,012 in the World

Kanagawa, Japan

Opnext Japan, Inc.

Forward Citations = 586

182 inventors:

Osamu Kagaya (14 out of 84 patents)

Shigeru Tokita (13 out of 16 patents)

Kazumi Kawamoto (12 out of 30 patents)

4. Hideyuki Kuwano (11 out of 15 patents)

5. Tomonobu Tsuchiya (10 out of 30 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Opnext Japan, Inc.. Retrieved from https://idiyas.com/company/opnext-japan

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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