Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11441690 | Valve device and assembly method of valve device | Koichi Maruyama, Masafumi Yoshida, Naoto Yumisashi | 2022-09-13 |
| 9581061 | Internal combustion engine and separator structure thereof | Hirotaka Kurita, Yoshiyuki Kawai, Seiichi Shiigi | 2017-02-28 |