Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7144017 | Piston ring having wear resistant composition | Mehdi Aram, Per Samuelsson, Changhai Li | 2006-12-05 |
| 7052018 | Piston ring having wear resistant composition | Per Samuelsson, Changhai Li, Mehdi Aram | 2006-05-30 |