Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10006546 | Piston ring | Masayuki Sato, Yuuichi Murayama, Takuma Sekiya | 2018-06-26 |
| 10006547 | Piston ring and its production method | Masayuki Sato, Yuuichi Murayama, Takuma Sekiya | 2018-06-26 |
| 9447879 | Piston ring | Masayuki Sato, Yuuichi Murayama | 2016-09-20 |