Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4975322 | Magnetic recording medium | Hajime Takeuchi | 1990-12-04 |
| 4511617 | Magnetic recording medium | Akio Ishizawa, Katuya Kumagai, Minoru Hashimoto | 1985-04-16 |
| 4264715 | Method of preparing resist pattern | Akira Miura, Iwao Higashikawa | 1981-04-28 |