Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679455 | Magneto-optic recording medium and apparatus | Yoshiyuki Nakaki, Takashi Tokunaga, Tatsuya Fukami, Kazuhiko Tsutsumi | 1997-10-21 |
| 5638344 | Magneto-optic recording and reproducing apparatus | Yoshiyuki Nakaki, Takashi Tokunaga, Tatsuya Fukami, Kazuhiko Tsutsumi | 1997-06-10 |
| 5603814 | Magneto-optical disk | Kazuhiko Tsutsumi, Hiroshi Sugahara | 1997-02-18 |