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Bellows Falls, VT, United States of America

Sonnax Industries, Inc.

USPTO Granted Patents = 75

% Expired Patents = 37.3

Trademarks = 5

Forward Citations = 337

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31 inventors (with patents filed for the assignee):

Maura Jane Stafford (18 out of 18 patents)

Gregg A Nader (11 out of 24 patents)

Robert C Warnke (9 out of 11 patents)

4. Brian G Rowell (8 out of 14 patents)

5. Scott C Jackson (8 out of 8 patents)

6. Andrew D Dumas (6 out of 6 patents)

7. Lawrence P Bolaski (5 out of 5 patents)

8. Michael G Morin (3 out of 7 patents)

9. Todd V Mangiagli (3 out of 5 patents)

10. Patrick A Keller (3 out of 3 patents)

11. Donald G Parrott (3 out of 3 patents)

12. MacKenzie M Campbell (2 out of 2 patents)

13. William M DeRoche (2 out of 2 patents)

14. Garry J Emge (2 out of 3 patents)

15. Don Shattuck (2 out of 3 patents)

Core Competencies:

Solenoid Valves

Clutch Assemblies

Valve Body Systems

Torque Converter

Automatic Transmission

Pressure Regulators

Hydraulic Valves

Transmission Fluid

Gear Assemblies

Piston Systems

Filtration Systems

Torque Control

75 patents: Sort by Forward Citations

1. 9851003 - Remanufactured solenoid valves and devices for remanufacturing solenoid valves (2017-12-26),

2. 9746089 - Spool valve assembly with stationary insert (2017-08-29),

3. D784101 - Seal installation tool (2017-04-18),

4. 9574653 - Ring gear stabilization for powerglide transmissions (2017-02-21),

5. 9562573 - Replacement forward drum and method in certain automatic transmissions (2017-02-07),

6. 9447871 - Multiple-ratio boost valve (2016-09-20),

7. 9382924 - Transmission shifting assembly and method (2016-07-05),

8. D755250 - Valve piston body (2016-05-03),

9. 8998768 - High torque capacity reverse clutch (2015-04-07),

10. 8955533 - Multiple pressure ratio valve assembly (2015-02-17),

11. 8919381 - Valve body fluid rerouting system (2014-12-30),

12. 8857592 - Clutch assembly performance enhancement apparatus and method (2014-10-14),

13. 8794108 - Automatic transmission fluid accumulator replacement assembly (2014-08-05),

14. 8707573 - Low clearance machined part mating system (2014-04-29),

15. 8486277 - Internal bypass filtration circuit (2013-07-16),

Company Overview

Sonnax Industries, Inc., based in Bellows Falls, Vermont, specializes in the development and manufacturing of advanced transmission components for the automotive industry. The company focuses on enhancing the performance and reliability of automatic transmissions through innovative solutions such as solenoid valves, clutch assemblies, and valve body systems. With a commitment to engineering excellence, Sonnax plays a pivotal role in improving transmission fluid management and hydraulic systems, catering to a diverse range of automotive applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

75 Patents

#1 in Bellows Falls, VT

#6 in Vermont

#4,906 in US

#10,007 in the World

Bellows Falls, VT, United States of America

Sonnax Industries, Inc.

Forward Citations = 337

31 inventors:

Maura Jane Stafford (18 out of 18 patents)

Gregg A Nader (11 out of 24 patents)

Robert C Warnke (9 out of 11 patents)

4. Brian G Rowell (8 out of 14 patents)

5. Scott C Jackson (8 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sonnax Industries, Inc.. Retrieved from https://idiyas.com/company/sonnax-industries

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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