CIPO Patents = 1

Trademarks = 2

Forward Citations = 110

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8 inventors (with patents filed for the assignee):

Mark Shalkevich (2 out of 2 patents)

Yen Chuh (1 out of 7 patents)

Thao Hoang (1 out of 1 patent)

4. David P Myers (1 out of 1 patent)

5. Timothy R Geuy (1 out of 1 patent)

6. David C Nguyen (1 out of 1 patent)

7. Donald R Gneiding (1 out of 5 patents)

8. Oscar J Peterson (1 out of 1 patent)

6 patents: Sort by Forward Citations

1. 7318426 - Fuel-control manifold with broad-range temperature and pressure capability (2008-01-15),

2. 6953048 - Modular surface-mount fluid-flow system (2005-10-11),

3. 6439334 - Alternative fuels vehicle and fuel-system valve used therein (2002-08-27),

4. 5743285 - Gas cylinder thermal relief valve (1998-04-28),

5. 5181977 - Tire inflation valve having overpressure and flow control (1993-01-26),

6. 5123442 - Regulating shut off valve (1992-06-23),

Company Overview

Circle Seal Controls, Inc. is a leading provider of high-quality precision valves and fluid control components for a wide range of industries including aerospace, defense, and industrial applications. With over 75 years of experience, Circle Seal Controls is known for its innovative solutions and reliable products that meet the stringent requirements of its customers. The company's products are trusted by customers worldwide for their durability, performance, and precision engineering.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

6 Patents

#24 in Corona, CA

#10,570 in California

#44,981 in US

Corona, CA, United States of America

Circle Seal Controls, Inc.

Forward Citations = 110

8 inventors:

Mark Shalkevich (2 out of 2 patents)

Yen Chuh (1 out of 7 patents)

Thao Hoang (1 out of 1 patent)

4. David P Myers (1 out of 1 patent)

5. Timothy R Geuy (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Circle Seal Controls, Inc.. Retrieved from https://idiyas.com/company/circle-seal-controls

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]

1 patent (CIPO):

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]