Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5001820 | Roll for rolling mill | Masujiro Yoshida, Masao Nitanda, Heiji Kato, Isao Imai | 1991-03-26 |
| 4837906 | Rolling roll with variable profile and of the tapered piston type | Takaaki Mori, Kinichi Higuchi, Masao Nitanda, Kohei HOSOI, Isao Imai +2 more | 1989-06-13 |