% Expired Patents = 50.0

Forward Citations = 26

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4 inventors (with patents filed for the assignee):

John Quillian Walker, Ii (2 out of 10 patents)

Peter James Schwaller (2 out of 14 patents)

Joel L Webb (1 out of 15 patents)

4. Andrew H Gross (1 out of 2 patents)

2 patents: Sort by Forward Citations

1. 8093484 - Methods, systems and computer program products for regenerating audio performances (2012-01-10),

2. 8008566 - Methods, systems and computer program products for detecting musical notes in an audio signal (2011-08-30),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#193 in Raleigh, NC

#2,041 in North Carolina

#94,905 in US

Raleigh, NC, United States of America

Zenph Sound Innovations, Inc.

Forward Citations = 26

4 inventors:

John Quillian Walker, Ii (2 out of 10 patents)

Peter James Schwaller (2 out of 14 patents)

Joel L Webb (1 out of 15 patents)

4. Andrew H Gross (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Zenph Sound Innovations, Inc.. Retrieved from https://idiyas.com/company/zenph-sound-innovations

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]