Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10265798 | Magnetic pulse welding of engine components | Nikhil Nachappa, Searle Frei | 2019-04-23 |
| 10253882 | Oil control ring assembly | Thomas J. Smith | 2019-04-09 |
| 8724325 | Solid state switch arrangement | Ted R. Schnetker | 2014-05-13 |
| 7997185 | Piston ring | John C. Lahrman | 2011-08-16 |
| 7188841 | Secondary piston seal | Jason Bieneman | 2007-03-13 |
| 7121192 | Piston ring coating | Thomas J. Smith | 2006-10-17 |
| 7017914 | Piston assembly and method of manufacture | John C. Lahrman, Vernon M. Daffron | 2006-03-28 |
| 6361050 | Oppositely angled piston ring grooves | — | 2002-03-26 |
| 6119647 | Piston with blow-by pressure relief | — | 2000-09-19 |
| 5238255 | Oil ring assembly | — | 1993-08-24 |