Issued Patents 2018
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10100929 | Piston ring | Keiji Honda, Katsuhiro Tsuji, Masaki Moronuki | 2018-10-16 |
| 10006546 | Piston ring | Masayuki Sato, Yuuichi Murayama, Youhei IWAMOTO | 2018-06-26 |
| 10006547 | Piston ring and its production method | Masayuki Sato, Yuuichi Murayama, Youhei IWAMOTO | 2018-06-26 |