Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4343831 | Process for producing magnetic recording medium | Nobuo Tsuji, Goro Akashi, Masaaki Fujiyama | 1982-08-10 |
| 4336308 | Magnetic recording media | Kenichi Masuyama, Nobuo Tsuji | 1982-06-22 |
| 4333988 | Magnetic recording media | Kenichi Masuyama, Tatsuji Kitamoto | 1982-06-08 |