Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10006546 | Piston ring | Masayuki Sato, Youhei IWAMOTO, Takuma Sekiya | 2018-06-26 |
| 10006547 | Piston ring and its production method | Masayuki Sato, Youhei IWAMOTO, Takuma Sekiya | 2018-06-26 |
| 9447879 | Piston ring | Masayuki Sato, Youhei IWAMOTO | 2016-09-20 |
| 9371797 | Piston ring | Takuma Sekiya, Masayuki Sato, Yuji Shima, Junya Takahashi, Masaki Moronuki | 2016-06-21 |
| 9347559 | Piston ring | Takuma Sekiya, Masayuki Sato, Yuji Shima, Junya Takahashi, Masaki Moronuki | 2016-05-24 |