Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8979485 | Variable geometry turbine | Gary Beshears, Timothy J. Proctor, John F. Parker, John Bywater | 2015-03-17 |
| 6408624 | System for controlling transient compressor surge in a turbocharged internal combustion engine | Martin T. Books | 2002-06-25 |
| 6220234 | Coated compressor diffuser | Paul Douglas Free | 2001-04-24 |
| 6202413 | Multiple nozzle ejector for wastegated turbomachinery | Gregory H. Henderson, P. Douglas Free | 2001-03-20 |
| 6123061 | Crankcase ventilation system | David M. Ruch, John M. Partridge, Brett Herrick | 2000-09-26 |
| 5406795 | Exhaust manifold to turbine casing flanges | Jonathan H. Raub | 1995-04-18 |
| 5308169 | Bearing system for turbocharger | David R. Engle, Roger W. Williams, Jr. | 1994-05-03 |
| 5199261 | Internal combustion engine with turbocharger system | — | 1993-04-06 |