Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11168790 | Sliding member and piston ring | Kazuya Kameda, Yuuichi Ishida, Hiroshi Maruyama | 2021-11-09 |
| 10670147 | Sliding member and piston ring | Kazuya Kameda, Hiroshi Maruyama, Yuuichi Ishida | 2020-06-02 |
| 10352446 | Combined oil control ring | Takayuki Ichikawa | 2019-07-16 |
| 10100929 | Piston ring | Keiji Honda, Katsuhiro Tsuji, Masaki Moronuki | 2018-10-16 |
| 10006547 | Piston ring and its production method | Masayuki Sato, Yuuichi Murayama, Youhei IWAMOTO | 2018-06-26 |
| 10006546 | Piston ring | Masayuki Sato, Yuuichi Murayama, Youhei IWAMOTO | 2018-06-26 |
| 9371797 | Piston ring | Yuuichi Murayama, Masayuki Sato, Yuji Shima, Junya Takahashi, Masaki Moronuki | 2016-06-21 |
| 9347559 | Piston ring | Yuuichi Murayama, Masayuki Sato, Yuji Shima, Junya Takahashi, Masaki Moronuki | 2016-05-24 |
| 8597797 | Chromium nitride ion-plating coating and its production method, as well as piston ring used for internal combustion engine | Terushige Ueda, Yuji Shima, Shigeo Inoue | 2013-12-03 |