Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11168790 | Sliding member and piston ring | Kazuya Kameda, Hiroshi Maruyama, Takuma Sekiya | 2021-11-09 |
| 10670147 | Sliding member and piston ring | Kazuya Kameda, Hiroshi Maruyama, Takuma Sekiya | 2020-06-02 |