Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9217407 | Mechanical lifter | William D. Bauman, Gerald R. Stabel | 2015-12-22 |
| 7614375 | Roller bearing and z-stop for a two-step roller finger follower | Cynthia A. Tawaf, Andrew J. Lipinski, William D. Bauman, Albert C. Stone, Eric G. Wilusz +2 more | 2009-11-10 |
| 7093575 | Pin housing sub-assembly for an hydraulic valve lifter | William D. Bauman, Fred C. Schouw, Albert C. Stone | 2006-08-22 |
| 6748914 | Refillable metering valve for hydraulic valve lifters | Mark J. Spath | 2004-06-15 |
| 6578535 | Valve-deactivating lifter | Mark J. Spath, Albert C. Stone | 2003-06-17 |
| 6497207 | Deactivation roller hydraulic valve lifter | Mark J. Spath, Albert C. Stone, David McCarthy | 2002-12-24 |