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Redwood City, CA, United States of America

Ampex Systems Corporation

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USPTO Granted Patents = 29

Forward Citations = 332

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36 inventors (with patents filed for the assignee):

Lionel C Shih (3 out of 16 patents)

George R Varian (3 out of 14 patents)

Darrell S Staley (2 out of 11 patents)

4. Beverley R Gooch (2 out of 24 patents)

5. David E Trytko (2 out of 6 patents)

6. Jeffrey L Fincher (2 out of 2 patents)

7. Robert A Williams (1 out of 12 patents)

8. Jan S Wesolowski (1 out of 15 patents)

9. Ashok Mitter Khosla (1 out of 11 patents)

10. Keith J Bertrand (1 out of 3 patents)

11. Antoni S Baranski (1 out of 7 patents)

12. Sidney D Miller (1 out of 7 patents)

13. Ivo T Plachy (1 out of 1 patent)

14. Charles H Coleman (1 out of 9 patents)

15. Peter Smidth (1 out of 6 patents)

Core Competencies:

Viterbi Detector

Data Recording

Magnetic Transducer

Digital Video

Error Concealment

Tape Transport

Synchronization Recovery

Image Data Shuffling

Damping Arrangement

Scan Tracking

Clock Presence Detection

Professional Video Recorder

29 patents: Sort by Forward Citations

1. 5916315 - Viterbi detector for class II partial response equalized miller-squared (1999-06-29),

2. 5543977 - Data recording system having improved longitudinal and helical search (1996-08-06),

3. 5402294 - Laminated, high frequency, magnetic transducer and manufacturing method (1995-03-28),

4. 5364194 - Axially displaced flexural bearing support (1994-11-15),

5. 5349611 - Recovering synchronization in a data stream (1994-09-20),

6. 5343301 - Input clock presence detector for a digital video input (1994-08-30),

7. 5341378 - Data recording system having improved automatic rewrite capability and (1994-08-23),

8. 5341251 - Data recording system having longitudinal tracks with recordable segments (1994-08-23),

9. 5323272 - Time delay control for serial digital video interface audio receiver (1994-06-21),

10. 5319504 - Method and apparatus for marking a data block defective and re-recording (1994-06-07),

11. 5305108 - Switcher mixer priority architecture (1994-04-19),

12. 5301018 - Method and apparatus for shuffling image data into statistically (1994-04-05),

13. 5296790 - Motor driven damping arrangement and method (1994-03-22),

14. D344713 - Professional digital video cassette recorder (1994-03-01),

15. 5291134 - Erase head positioning method (1994-03-01),

Company Overview

Ampex Systems Corporation, based in Redwood City, California, specializes in advanced data storage and retrieval solutions. The company is renowned for its innovations in digital media technology, particularly in the fields of audio and video recording, as well as data archiving systems. Ampex focuses on developing cutting-edge technologies that enhance the efficiency and reliability of data management across various industries, including broadcasting, aerospace, and defense, positioning itself as a leader in the evolving landscape of digital information solutions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

29 Patents

#70 in Redwood City, CA

#2,768 in California

#11,634 in US

#22,581 in the World

Redwood City, CA, United States of America

Ampex Systems Corporation

Forward Citations = 332

36 inventors:

Lionel C Shih (3 out of 16 patents)

George R Varian (3 out of 14 patents)

Darrell S Staley (2 out of 11 patents)

4. Beverley R Gooch (2 out of 24 patents)

5. David E Trytko (2 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ampex Systems Corporation. Retrieved from https://idiyas.com/company/ampex-systems

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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