Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12241552 | Turboexpander labyrinth seal | Duane Bergmann, John Park, Geoff Legg | 2025-03-04 |
| 11686390 | Turboexpander labyrinth seal | Duane Bergmann, John Park, Geoff Legg | 2023-06-27 |
| 8181462 | Turbocharger with two-stage compressor, including a twin-wheel parallel-flow first stage | Steven Don Arnold, Will Smith, Mike Guidry, Jeff Letterman, James Reyenga +2 more | 2012-05-22 |