Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12276169 | Tubing hanger and wellhead assembly with tubing hanger | Bernard Lumori, Chris Patton, Emery Stoesser | 2025-04-15 |
| 12234710 | Drive assembly for a well site | Benjamin J Gagnon, Emery Stoesser, Bernard Lumori | 2025-02-25 |
| 12139990 | Dual string hanger assembly | Emery Stoesser | 2024-11-12 |
| 12084938 | Tubing hanger with tensioner mechanism | Bernard Lumori, Chris Patton, Emery Stoesser | 2024-09-10 |
| 11732541 | Dual tubing string adaptor | Emery Stoesser, Chris Patton | 2023-08-22 |
| 10087696 | Polish rod locking clamp | — | 2018-10-02 |
| 9322238 | Polish rod locking clamp | — | 2016-04-26 |
| 9074727 | Safety guard for a rotatable member | Anne Steghaus, Scott Rutherford, Kevin Michael Harty, Max Romansky | 2015-07-07 |
| 9027717 | Cam-actuated centrifugal brake for preventing backspin | — | 2015-05-12 |
| 9016362 | Polish rod locking clamp | — | 2015-04-28 |
| 7044217 | Stuffing box for progressing cavity pump drive | — | 2006-05-16 |
| 6843313 | Pump drive head with stuffing box | — | 2005-01-18 |
| 6135740 | Pump drive head backspin retarder | Edward Leigh Schubert | 2000-10-24 |
| 6125931 | Right angle drive adapter for use with a vertical drive head in an oil well progressing cavity pump drive | Curtis Christopher Blundell | 2000-10-03 |
| 6113355 | Pump drive head pump assembly with a hydraulic pump circuit for preventing back-spin when the drive head has been shut off | Edward Leigh Schubert | 2000-09-05 |
| 6079489 | Centrifugal backspin retarder and drivehead for use therewith | Curtis Christopher Blundell | 2000-06-27 |
| 5507357 | Pilot bit for use in auger bit assembly | Kare Asak | 1996-04-16 |