Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4695233 | Screw rotor mechanism | Noboru Tsuboi, Kunihiko Nishitani, Kazuo Kubo, Shouji Yoshimura | 1987-09-22 |
| 4671750 | Screw rotor mechanism with specific tooth profile | Noboru Tsuboi, Kunihiko Nishitani, Kazuo Kubo, Shouji Yoshimura | 1987-06-09 |