Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5340698 | Optical disk | Keiji Koga, Toshihiko Ishida | 1994-08-23 |
| 5279877 | Magneto optical disc | Ryota UCHIYAMA, Hiroyuki Endo, Isamu Kuribayashi, Shin-ichi Tezuka, Tsuneo Kuwahara +1 more | 1994-01-18 |