Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10295058 | Piston ring | Daisuke Sato | 2019-05-21 |
| 9664281 | Piston ring sprayed coating, piston ring, and method for producing piston ring sprayed coating | Kazuhiko Hirota | 2017-05-30 |