Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10344860 | Highly heat conductive piston ring for internal combustion engine | Hiromichi Yokokawa, Kazuhiro Fujimura, Junpei Ogawa, Takaaki Kondo, Tomonori Miyazawa +2 more | 2019-07-09 |
| 7493882 | Combination of a cylinder liner and a piston ring | Iwao Hiraishi, Katsuaki Ogawa, Hiromi Ishikawa, Kazuhiro Sameshima | 2009-02-24 |