For the Inventor, By the Inventor

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Milpitas, CA, United States of America

Com21, Inc.

Calculating rank

USPTO Granted Patents = 16

EPO Patents = 1

Forward Citations = 1,818

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16 inventors (with patents filed for the assignee):

Paul Baran (12 out of 32 patents)

Mark E Laubach (6 out of 8 patents)

Sanford L Helton (2 out of 8 patents)

4. Ali Raissinia (2 out of 15 patents)

5. Kenneth Gorman (2 out of 2 patents)

6. F Jud Heinzmann (2 out of 2 patents)

7. Marshall H Hollimon (2 out of 3 patents)

8. George K Bunya (2 out of 2 patents)

9. Alireza Raissinia (1 out of 200 patents)

10. Malay M Thaker (1 out of 2 patents)

11. Scott M Quinn (1 out of 2 patents)

12. Michael John Sabin (1 out of 17 patents)

13. Joseph B Lyles (1 out of 17 patents)

14. Paul A Gordon (1 out of 1 patent)

15. Kathleen M Nichols (1 out of 1 patent)

16 patents: Sort by Forward Citations

1. 6137793 - Reverse path multiplexer for use in high speed data transmissions (2000-10-24),

2. 6094211 - TV and data cable system ingress noise blocker (2000-07-25),

3. 6081533 - Method and apparatus for an application interface module in a subscriber (2000-06-27),

4. 6075972 - CATV network and cable modem system having a wireless return path (2000-06-13),

5. 6049693 - Upstream ingress noise blocking filter for cable television system (2000-04-11),

6. 6028860 - Prioritized virtual connection transmissions in a packet to ATM cell (2000-02-22),

7. 5954583 - Secure access control system (1999-09-21),

8. 5926479 - Multiple protocol personal communications network system (1999-07-20),

9. 5917822 - Method for providing integrated packet services over a shared-media (1999-06-29),

10. 5870395 - Wide area fiber and tv cable fast packet cell network (1999-02-09),

11. 5870134 - CATV network and cable modem system having a wireless return path (1999-02-09),

12. 5642351 - Wide area fiber and TV cable fast packet cell network (1997-06-24),

13. 5550820 - Multiple protocol personal communications network system (1996-08-27),

14. 5544164 - Method and cell based wide area network alternative access telephone and (1996-08-06),

15. 5425027 - Wide area fiber and TV cable fast packet cell network (1995-06-13),

Company Overview

Com21, Inc. is a technology company based in Milpitas, California, specializing in advanced broadband communication solutions. The organization focuses on the development and manufacturing of high-performance networking equipment and software, primarily for cable and telecommunications service providers. Com21's innovations enhance data transmission capabilities and support the growing demand for high-speed internet services, positioning the company as a key player in the evolving landscape of digital communication technologies.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

16 Patents

#81 in Milpitas, CA

#4,778 in California

#19,944 in US

#37,887 in the World

Milpitas, CA, United States of America

Com21, Inc.

Forward Citations = 1,818

16 inventors:

Paul Baran (12 out of 32 patents)

Mark E Laubach (6 out of 8 patents)

Sanford L Helton (2 out of 8 patents)

4. Ali Raissinia (2 out of 15 patents)

5. Kenneth Gorman (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Com21, Inc.. Retrieved from https://idiyas.com/company/com21

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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