% Expired Patents = 14.3

Trademarks = 10

Forward Citations = 79

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6 inventors (with patents filed for the assignee):

Kevin J Beller (5 out of 7 patents)

Bruce Laurence Kennedy (2 out of 25 patents)

James A Stryker (1 out of 1 patent)

4. Joseph K Beller (1 out of 1 patent)

5. Roger A Modjeski (1 out of 1 patent)

6. Guido Brancalion (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 12592215 - Wireless switching system for musical instruments and related methods (2026-03-31),

2. 7476798 - Combined jack and coaxial battery-access cover for a stringed musical instrument (2009-01-13),

3. 5525750 - Humbucking pickup for electric guitar (1996-06-11),

4. D355207 - Electromagnetic pickup for stringed instrument (1995-02-07),

5. D351852 - Electromagnetic pickup for acoustical guitar (1994-10-25),

6. 4672671 - Audio frequency signal preamplifier for providing controlled output (1987-06-09),

7. 4644289 - Variable power amplifier for audio frequency signals and method (1987-02-17),

Company Overview

Carter Duncan Corp. is a leading provider of innovative software solutions for businesses. With a focus on delivering high-quality products and exceptional customer service, we help our clients streamline their operations and achieve their strategic goals. Our team of experienced professionals is dedicated to creating custom solutions tailored to the unique needs of each organization. Let us help your business succeed in today's competitive marketplace.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

7 Patents

#68 in Santa Barbara, CA

#9,501 in California

#39,907 in US

Santa Barbara, CA, United States of America

Carter Duncan Corp.

Forward Citations = 79

6 inventors:

Kevin J Beller (5 out of 7 patents)

Bruce Laurence Kennedy (2 out of 25 patents)

James A Stryker (1 out of 1 patent)

4. Joseph K Beller (1 out of 1 patent)

5. Roger A Modjeski (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Carter Duncan Corp.. Retrieved from https://idiyas.com/company/carter-duncan

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]