For the Inventor, By the Inventor

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San Jose, CA, United States of America

Opnext Subsystems, Inc.

USPTO Granted Patents = 16

% Expired Patents = 12.5

EPO Patents = 1

Forward Citations = 175

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15 inventors (with patents filed for the assignee):

Theodore John Schmidt (10 out of 47 patents)

Christian Malouin (8 out of 37 patents)

Sunil Kumar Singh Khatana (6 out of 8 patents)

4. Edem Ibragimov (4 out of 19 patents)

5. Brian Lee Heffner (4 out of 23 patents)

6. Andrew Wagner (2 out of 2 patents)

7. Steven William Keck (1 out of 15 patents)

8. Roberto Marcoccia (1 out of 36 patents)

9. Bo Zhang (1 out of 26 patents)

10. George Zarris (1 out of 1 patent)

11. Lee Dardis (1 out of 1 patent)

12. Hong Jiang (1 out of 1 patent)

13. Yannick Keith Lize (1 out of 1 patent)

14. Gordon Ries (1 out of 1 patent)

15. Ross Alexander Saunders (1 out of 1 patent)

16 patents: Sort by Forward Citations

1. 8768178 - Automatic gain control for high-speed coherent optical receivers (2014-07-01),

2. 8644420 - Alignment of in-phase and quadrature data in quadrature phase shift keying optical transmitters (2014-02-04),

3. 8634726 - Polarization and differential-group-delay insensitive digital timing error detection for polarization-multiplexed coherent optical systems (2014-01-21),

4. 8565621 - Quadrature time skew detection for coherent optical signals (2013-10-22),

5. 8565271 - Multiplexer lane alignment for high-speed data systems (2013-10-22),

6. 8532504 - Coherent optical receiver with adaptive equalizer initialization system (2013-09-10),

7. 8437632 - Polarization monitoring in polarization division multiplexing in optical communications (2013-05-07),

8. 8428183 - In-phase and quadrature pattern alignment for quadrature phase shift keying optical transmitters (2013-04-23),

9. 8244142 - Optical receiver having fractional sampling (2012-08-14),

10. 8126337 - Balanced phase-shaped binary transmission in optical communications (2012-02-28),

11. 8032025 - Polarization monitoring in polarization division multiplexing in optical communications (2011-10-04),

12. 8023833 - Optical receivers with controllable transfer function bandwidth and gain imbalance (2011-09-20),

13. 7991300 - Optical receiver having bandwidth control for intersymbol interference compensation (2011-08-02),

14. 7986878 - Adjustable bit rate optical transmission using programmable signal modulation (2011-07-26),

15. 7983573 - Optical receiver having FSR phase compensation (2011-07-19),

Company Overview

Opnext Subsystems, Inc., based in San Jose, California, specializes in the development and manufacturing of advanced optical components and subsystems. The company focuses on high-performance solutions for telecommunications and data communications, particularly in the areas of optical networking and photonics. With a commitment to innovation, Opnext plays a crucial role in enhancing the efficiency and capability of modern communication infrastructures, catering to the evolving demands of the global market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

16 Patents

#397 in San Jose, CA

#4,770 in California

#19,922 in US

#37,831 in the World

San Jose, CA, United States of America

Opnext Subsystems, Inc.

Forward Citations = 175

15 inventors:

Theodore John Schmidt (10 out of 47 patents)

Christian Malouin (8 out of 37 patents)

Sunil Kumar Singh Khatana (6 out of 8 patents)

4. Edem Ibragimov (4 out of 19 patents)

5. Brian Lee Heffner (4 out of 23 patents)

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

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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