Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5637372 | Phase change optical recording medium | Junji Tominaga, Ryo Inaba, Tatsuya Kato | 1997-06-10 |
| 5593789 | Magneto-optical recording medium | Hajime Utsunomiya, Kenji Uchiyama, Hiroyasu Inoue | 1997-01-14 |