Trademarks = 1

Forward Citations = 104

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3 inventors (with patents filed for the assignee):

David T Starkey (6 out of 7 patents)

Anthony G Williams (4 out of 4 patents)

J Robert Lee (2 out of 3 patents)

7 patents: Sort by Forward Citations

1. 5466882 - Method and apparatus for producing an electronic representation of a (1995-11-14),

2. 5231283 - Opto-electronic sensing method and device for an acoustic piano (1993-07-27),

3. 5196639 - Method and apparatus for producing an electronic representation of a (1993-03-23),

4. 5001339 - Opto-electronic sensing method and device for an acoustic piano (1991-03-19),

5. 4969385 - Reassignment of digital oscillators according to amplitude (1990-11-13),

6. 4953437 - Method and apparatus for digitally generating musical notes (1990-09-04),

7. 4941387 - Method and apparatus for intelligent chord accompaniment (1990-07-17),

Company Overview

Gulbransen, Inc. is a leading provider of innovative audio solutions for both professional and consumer markets. With a rich history dating back to 1910, Gulbransen has established itself as a trusted name in the industry. The company offers a wide range of products including amplifiers, speakers, and audio accessories designed to enhance the listening experience. Visit our website to learn more about our cutting-edge audio technology and how Gulbransen can elevate your sound.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

7 Patents

#187 in Las Vegas, NV

#364 in Nevada

#39,929 in US

Las Vegas, NV, United States of America

Gulbransen, Inc.

Forward Citations = 104

3 inventors:

David T Starkey (6 out of 7 patents)

Anthony G Williams (4 out of 4 patents)

J Robert Lee (2 out of 3 patents)

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

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]