Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4984445 | Ceramic isothermal forging die | Yoshinori Nakazawa, Kenichi Matsuno | 1991-01-15 |
| 4838329 | Nonskid device | Ken'ichi Shimizu | 1989-06-13 |
| 4600446 | Method for tempering and working high strength low ductile alloy | Yasunori Torisaka, Yoshinori Nakazawa | 1986-07-15 |