Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5292568 | Optical disk having a hard coat layer | Shin-ichi Tezuka | 1994-03-08 |
| 5279877 | Magneto optical disc | Ryota UCHIYAMA, Hiroyuki Endo, Isamu Kuribayashi, Shin-ichi Tezuka, Hideki Hirata +1 more | 1994-01-18 |