Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7506624 | Variable engine valve actuation system | — | 2009-03-24 |
| 7055510 | Internal combustion engine having an internal barrier device to reduce oil carry-over | Frank G. Hughes, John Robert Sherwood | 2006-06-06 |
| 6250274 | Internal combustion engine having an increased lubricating oil capacity and/or increased gradiability | — | 2001-06-26 |
| 5819588 | Method and a device for setting backlash between gears in a gear train | David Martin Mills | 1998-10-13 |
| 5809962 | Method for producing a piston for an internal combustion engine and a piston produced by the method | Keith Abbott, John Renshaw | 1998-09-22 |
| 5636550 | No-backlash gearing mechanism | — | 1997-06-10 |
| 5533475 | Engine and gear drive combination | — | 1996-07-09 |