Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE35629 | Magneto-optical memory element | Yoshiteru Murakami, Akira Takahashi, Junichiro Nakayama, Hiroyuki Katayama, Kenji Ohta | 1997-10-14 |
| 5674583 | Optical recording medium and manufacturing method thereof | Junichiro Nakayama, Hiroyuki Katayama, Akira Takahashi, Kenji Ohta | 1997-10-07 |
| 5666345 | Optical memory medium with predetermined guide tracks and prepits | Akira Takahashi, Tetsuya Inui, Kenji Ohta, Toshihisa Deguchi | 1997-09-09 |
| 5605779 | Optical memory medium | Masahiro Irie | 1997-02-25 |