Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4973233 | Four-rotor type rotary piston engine | Noriyuki Kurio, Isao Shimizu, Yoshitaka Matsumuro | 1990-11-27 |
| 4729726 | Housing structure for a multiple-rotor type rotary piston engine | Noriyuki Kurio, Nobuhiro Yamamoto, Yoriaki Fujimoto | 1988-03-08 |