Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7121244 | Anti-rotation guide for a roller follower valve lifter | Richard B. Roe | 2006-10-17 |
| 6439186 | Mechanical oil filtration in an I.C. engine valve lifter | Nathan Owen | 2002-08-27 |
| 6289765 | Roller follower shaft retention | — | 2001-09-18 |
| 5931133 | Roller cam follower bearing shaft retention | Guy Ernest Giannone, Gary Blake, Richard B. Roe | 1999-08-03 |
| 5520144 | Valve actuation assembly | Charles M. Philo | 1996-05-28 |