Issued Patents All Time
Showing 1–25 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12391540 | Pressure/vacuum (PV) valve for fuel storage tanks, in-line pressure-vacuum valve test unit, and combination thereof | Douglas Alan Harty, Gregg Marshel | 2025-08-19 |
| 11795049 | Pressure/vacuum (PV) valve for fuel storage tanks, in-line pressure-vacuum valve test unit, and combination thereof | Douglas Alan Harty, Gregg Marshel | 2023-10-24 |
| 8997804 | Nozzle interlock failsafe/lost motion mechanisms | Christopher S. Spencer | 2015-04-07 |
| 8434531 | Fuel dispensing nozzle hold open clip release assembly | — | 2013-05-07 |
| 8286677 | Fuel dispensing nozzle hold open clip release assembly | — | 2012-10-16 |
| 7509982 | Vapor recovery system with improved ORVR compatibility and performance | — | 2009-03-31 |
| 7270154 | Fuel storage and dispensing system | Glenn Walker, Ken Allen | 2007-09-18 |
| 7174926 | Vapor recovery system with improved ORVR compatibility and performance | — | 2007-02-13 |
| 7032630 | Control of A/L ratios in vacuum assist vapor recovery dispensers | — | 2006-04-25 |
| 6953496 | Sub-atmospheric fuel storage system | Glenn Walker | 2005-10-11 |
| 6835223 | Fuel storage and dispensing system | Glenn Walker, Ken Allen | 2004-12-28 |
| 6810922 | Vapor recovery system with improved ORVR compatibility and performance | — | 2004-11-02 |
| 6608484 | Diagnostic fuel storage system | Glen Walker | 2003-08-19 |
| 6360789 | Vapor recovery line diagnostics | Glenn Walker | 2002-03-26 |
| 6293996 | Fuel storage system with vent filter assembly | Glenn Walker | 2001-09-25 |
| 5985002 | Fuel storage system with vent filter assembly | — | 1999-11-16 |
| 5720325 | Coaxial hose assembly for vapor assist fuel dispensing system | — | 1998-02-24 |
| 5678614 | Vapor recovery hose assembly and venturi pump therefor | — | 1997-10-21 |
| D380037 | Coaxial hose fitting | — | 1997-06-17 |
| D377969 | Coaxial hose fitting | — | 1997-02-11 |
| 5285744 | Coaxial hose assembly | Glenn Walker | 1994-02-15 |
| 5255723 | Vapor recovery fuel dispensing nozzle | Paul D. Carmack | 1993-10-26 |
| 5156191 | Hose assembly having a spider-like member holding the ends of inner and outer hoses thereof concentric and method of making the same | Glenn Walker, Guy L. Renshaw | 1992-10-20 |
| 5148840 | Hose assembly having a venturi section wtih a slide member therein and method of making the hose assembly | — | 1992-09-22 |
| 5141037 | Vapor recovery fuel dispensing nozzle | Paul D. Carmack | 1992-08-25 |