Issued Patents 2018
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10100929 | Piston ring | Keiji Honda, Katsuhiro Tsuji, Takuma Sekiya | 2018-10-16 |
| 10036345 | Combination of cylinder and piston ring | Katsuhiro Tsuji, Akio Shinohara | 2018-07-31 |
| 10036472 | Sliding member and piston ring | — | 2018-07-31 |