Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6401676 | Valve device having valve resting mechanism used for internal combustion engine | — | 2002-06-11 |
| 6386163 | Valve system for an engine | Takashi Ichimura, Yoshihiko Kumagai | 2002-05-14 |
| 6378495 | Engine with valve resting function | Tomoyuki Okamoto, Yoshihiko Kumagai | 2002-04-30 |