For the Inventor, By the Inventor

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San Jose, CA, United States of America

Symmetricom, Inc.

USPTO Granted Patents = 62

% Expired Patents = 35.5

Trademarks = 8

Forward Citations = 1,692

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44 inventors (with patents filed for the assignee):

Kishan Shenoi (26 out of 39 patents)

George P Zampetti (14 out of 20 patents)

Oliver Paul Leisten (8 out of 39 patents)

4. Jining Yang (4 out of 4 patents)

5. Jeremy Sinclair Sommer (3 out of 4 patents)

6. Madihally J Narasimha (3 out of 12 patents)

7. Kamila Kraba (3 out of 3 patents)

8. Sandro Squadrito (3 out of 4 patents)

9. Gary Bogardus (3 out of 4 patents)

10. Bob Hamilton (3 out of 3 patents)

11. Gary Jacobsen (3 out of 3 patents)

12. Mark Elliot (2 out of 4 patents)

13. Sanjay Mani (2 out of 15 patents)

14. Robert Ira Lutwak (2 out of 3 patents)

15. Robert P Hamilton (2 out of 2 patents)

Core Competencies:

Clock Synchronization

Timing Transfer

Network Protocols

Optical Fiber

Precision Timestamping

Packet Networks

Latency Analysis

Synchronization Status

Timing Packets

Global Positioning System

Frequency Locked Loop

Digital Phase Detector

62 patents: Sort by Forward Citations

1. 8644348 - Method for generating a robust timing correction in timing transfer systems (2014-02-04),

2. 8600239 - Precise clock synchronization over optical fiber (2013-12-03),

3. 8594134 - Precision time transfer over optical fiber (2013-11-26),

4. 8451867 - Network time protocol precision timestamping service (2013-05-28),

5. 8427963 - Method and system for analyzing and qualifying routes in packet networks (2013-04-23),

6. 8385212 - Method and apparatus for finding latency floor in packet networks (2013-02-26),

7. 8274999 - Method and apparatus for analyzing and qualifying packet networks (2012-09-25),

8. 8107502 - Method and apparatus for monitoring packet networks (2012-01-31),

9. 8064484 - Enhanced clock control in packet networks (2011-11-22),

10. 7894489 - Adaptive play-out buffers and adaptive clock operation in packet networks (2011-02-22),

11. 7876788 - Network time transfer (2011-01-25),

12. 7660332 - Supporting synchronization status messages on building integrated timing supply synchronization supply unit remote shelves (2010-02-09),

13. 7636022 - Adaptive play-out buffers and clock operation in packet networks (2009-12-22),

14. 7633870 - Network forwarding device and method that forward timing packets through the device with a constant delay (2009-12-15),

15. 7609769 - Image complexity computation in packet based video broadcast systems (2009-10-27),

Symmetricom, Inc., based in San Jose, California, specializes in clock synchronization technologies essential for precise timing in various applications. The company focuses on developing solutions for timing transfer, network protocols, and latency analysis, leveraging optical fiber and packet networks to ensure accurate synchronization across systems. Their expertise in precision timestamping supports industries that require reliable timekeeping, enhancing performance and efficiency in networked environments.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

Symmetricom, Inc.

62 Patents

#163 in San Jose, CA

#1,367 in California

#5,840 in US

#11,755 in the World

San Jose, CA, United States of America

Symmetricom, Inc.

Forward Citations = 1,692

44 inventors:

Kishan Shenoi (26 out of 39 patents)

George P Zampetti (14 out of 20 patents)

Oliver Paul Leisten (8 out of 39 patents)

4. Jining Yang (4 out of 4 patents)

5. Jeremy Sinclair Sommer (3 out of 4 patents)

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