Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4354908 | Process for the production of magnetic recording members | Ryuji Shirahata, Yasuo Tamai, Masaaki Suzuki | 1982-10-19 |
| 4333985 | Magnetic recording medium | Ryuji Shirahata, Akio Yanai | 1982-06-08 |
| 4333988 | Magnetic recording media | Yasuyuki Yamada, Kenichi Masuyama | 1982-06-08 |