Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5374480 | Magnetic recording medium | Yasuo Nishikawa | 1994-12-20 |
| 5334413 | Method for preparing a magnetic recording medium | Yasuo Nishikawa, Tadashi Yasunaga | 1994-08-02 |
| 5326641 | Magnetic recording medium comprising a ferromagnetic thin film and a protective layer of fluorine based resin | Yasuo Nishikawa | 1994-07-05 |