% Expired Patents = 12.5

Forward Citations = 80

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4 inventors (with patents filed for the assignee):

Harry W Kompanek (5 out of 18 patents)

Eric D Plambeck (3 out of 5 patents)

James R Ligman (1 out of 9 patents)

4. Plambeck Eric D (1 out of 1 patent)

8 patents: Sort by Forward Citations

1. 6496448 - Transducer receiving voltage inputs, such as square waves, rich in harmonics (2002-12-17),

2. 6491095 - Transducers, and methods of producing transducers, with cryogenically treated transducer members (2002-12-10),

3. RE37204 - Transducer assembly (2001-06-05),

4. 5122992 - Transducer assembly (1992-06-16),

5. 4788467 - Downhole oil well vibrating system (1988-11-29),

6. 4774427 - Downhole oil well vibrating system (1988-09-27),

7. 4682070 - Downhole oil well vibrating system (1987-07-21),

8. 4658897 - Downhole transducer systems (1987-04-21),

Company Overview

Piezo Sona-tool Corporation is a leading manufacturer of piezoelectric tools and equipment for industrial applications. With a focus on precision and innovation, our products are used in a wide range of industries including automotive, aerospace, medical, and electronics. We are dedicated to providing high-quality solutions that enhance productivity and efficiency for our customers.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

8 Patents

#19 in Ventura, CA

#8,543 in California

#35,941 in US

Ventura, CA, United States of America

Piezo Sona-Tool Corporation

Forward Citations = 80

4 inventors:

Harry W Kompanek (5 out of 18 patents)

Eric D Plambeck (3 out of 5 patents)

James R Ligman (1 out of 9 patents)

4. Plambeck Eric D (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Piezo Sona-Tool Corporation. Retrieved from https://idiyas.com/company/piezo-sona-tool

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]