Issued Patents All Time
Showing 51–52 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4451501 | Method of making a magnetic recording medium | Akira Nahara, Goro Akashi | 1984-05-29 |
| 4367257 | Thin magnetic recording medium | Yoshihiro Arai, Akira Nahara | 1983-01-04 |