Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5252371 | Rewritable photochromic optical disk | Hitoshi Taniguchi, Fumio Matsui, Masaaki Hayami | 1993-10-12 |
| 5155008 | Optical recording medium | Shuichi Yanagisawa, Tatsuro Sakai, Fumio Matsui, Akira Shimpo | 1992-10-13 |
| 5155009 | Optical recording medium | Shuichi Yanagisawa, Tatsuro Sakai, Fumio Mitsui, Ayashi Noguchi | 1992-10-13 |