Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8986465 | Piston ring with localized nitrided coating | — | 2015-03-24 |
| 8403334 | Multi-rail piston ring | — | 2013-03-26 |
| 8047123 | Cooling gallery insert for a piston | — | 2011-11-01 |
| 7997185 | Piston ring | Steven J. Sytsma | 2011-08-16 |
| 7017914 | Piston assembly and method of manufacture | Steven J. Sytsma, Vernon M. Daffron | 2006-03-28 |
| 5901963 | Gas nitrided taper faced keystone piston ring incorporating a sealing land and orientation groove | Russell E. Hite, Hugo A. Rita | 1999-05-11 |
| 5794941 | Piston ring assembly | — | 1998-08-18 |