Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4820565 | Magnetic recording medium | Masaya Funahashi, Kenichi Inoue, Akira Miyake | 1989-04-11 |
| 4797321 | Magnetic recording medium | Masaya Funahashi, Kenichi Inoue, Akira Miyake, Kohji Norimatsu | 1989-01-10 |