Issued Patents 2019
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10514097 | Method for producing piston ring with recess | Atsushi Chiba, Naoyuki Akimoto, Iwao Hiraishi | 2019-12-24 |
| 10344860 | Highly heat conductive piston ring for internal combustion engine | Tsugane Hirase, Hiromichi Yokokawa, Junpei Ogawa, Takaaki Kondo, Tomonori Miyazawa +2 more | 2019-07-09 |
| 10330198 | Multi-piece oil ring | Atsushi Chiba, Iwao Hiraishi, Makoto Kajiwara | 2019-06-25 |