Issued Patents 1982
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4361621 | Magnetic recording medium | Yukihiro Isobe, Kiyotaka Okuyama, Hideo Kobayashi | 1982-11-30 |
| 4357391 | Magnetic recording medium | Kiyotaka Okuyama | 1982-11-02 |
| 4336310 | Magnetic recording medium and preparation thereof | Kiyotaka Okuyama, Yukihiro Isobe | 1982-06-22 |
| 4332863 | Magnetic recording medium | — | 1982-06-01 |
| 4329398 | Magnetic recording medium | Kazushi Tanaka | 1982-05-11 |
| 4323628 | Magnetic recording medium | Kiyotaka Okuyama | 1982-04-06 |