Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10047647 | Variable valve mechanism of internal combustion engine | Naoki Hiramatsu, Koki Yamaguchi, Motohiro Yuge | 2018-08-14 |
| 9879577 | Variable valve mechanism of internal combustion engine | Koki Yamaguchi, Naoki Hiramatsu, Takayuki Maezako, Shinichiro Kikuoka, Masaaki Tani +1 more | 2018-01-30 |