For the Inventor, By the Inventor

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Dayton, OH, United States of America

Vapor Systems Technologies, Inc.

USPTO Granted Patents = 20

% Expired Patents = 40.0

Trademarks = 1

Forward Citations = 330

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7 inventors (with patents filed for the assignee):

Rodger P Grantham (20 out of 36 patents)

Glenn K Walker (6 out of 8 patents)

Ken Allen (2 out of 5 patents)

4. Douglas Alan Harty (2 out of 2 patents)

5. Gregg Marshel (2 out of 2 patents)

6. Christopher S Spencer (1 out of 1 patent)

7. Glen K Walker (1 out of 1 patent)

20 patents: Sort by Forward Citations

1. 12391540 - Pressure/vacuum (PV) valve for fuel storage tanks, in-line pressure-vacuum valve test unit, and combination thereof (2025-08-19),

2. 11795049 - Pressure/vacuum (PV) valve for fuel storage tanks, in-line pressure-vacuum valve test unit, and combination thereof (2023-10-24),

3. 8997804 - Nozzle interlock failsafe/lost motion mechanisms (2015-04-07),

4. 8434531 - Fuel dispensing nozzle hold open clip release assembly (2013-05-07),

5. 8286677 - Fuel dispensing nozzle hold open clip release assembly (2012-10-16),

6. 7509982 - Vapor recovery system with improved ORVR compatibility and performance (2009-03-31),

7. 7270154 - Fuel storage and dispensing system (2007-09-18),

8. 7174926 - Vapor recovery system with improved ORVR compatibility and performance (2007-02-13),

9. 7032630 - Control of A/L ratios in vacuum assist vapor recovery dispensers (2006-04-25),

10. 6953496 - Sub-atmospheric fuel storage system (2005-10-11),

11. 6835223 - Fuel storage and dispensing system (2004-12-28),

12. 6810922 - Vapor recovery system with improved ORVR compatibility and performance (2004-11-02),

13. 6608484 - Diagnostic fuel storage system (2003-08-19),

14. 6360789 - Vapor recovery line diagnostics (2002-03-26),

15. 6293996 - Fuel storage system with vent filter assembly (2001-09-25),

Vapor Systems Technologies, Inc. is a leading provider of innovative vaporization solutions. With expertise in developing advanced technologies, we offer a wide range of products for industrial, commercial, and residential applications. Our cutting-edge vapor systems are designed to optimize performance, efficiency, and safety. Visit our website to explore our extensive product line and discover how our solutions can benefit your business.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Sep 22 2026

Vapor Systems Technologies, Inc.

20 Patents

#34 in Dayton, OH

#714 in Ohio

#16,363 in US

#31,176 in the World

Dayton, OH, United States of America

Vapor Systems Technologies, Inc.

Forward Citations = 330

7 inventors:

Rodger P Grantham (20 out of 36 patents)

Glenn K Walker (6 out of 8 patents)

Ken Allen (2 out of 5 patents)

4. Douglas Alan Harty (2 out of 2 patents)

5. Gregg Marshel (2 out of 2 patents)

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