Patents per Year
Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 10551291 | Balanced capillary bridge viscometry | Mark Nicholls | 2020-02-04 | |
| 9759644 | Balanced capillary bridge viscometer | Mark Nicholls | 2017-09-12 | |
| 9612183 | Modular capillary bridge viscometer | Paul G. Clarke | 2017-04-04 | |
| 6182693 | Vapor canister and fuel tank assembly | Gary Francis Stack, Gregory T. Roth | 2001-02-06 | $17,769,000 |
| 4423309 | Quick heat self regulating electric glow heater | Gary Francis Stack, James W. Hoppenrath, John Richard Taylor | 1983-12-27 | $14,481,000 |
| 4403207 | Durable titania exhaust gas sensor | James Hoffman | 1983-09-06 | $8,348,000 |
| 4222840 | Heated solid electrolyte oxygen sensor | George W. Hillebrand | 1980-09-16 | $8,419,000 |