Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5371730 | Optical memory and information processing apparatus | Yoshihito Maeda, Isao Ikuta, Masaichi Nagai, Hisashi Andoh, Nobuyoshi Tsuboi +4 more | 1994-12-06 |
| 5317556 | Information processing apparatus and optical head incorporated therein | Nobuyoshi Tsuboi, Yoshio Sato, Hiroyuki Minemura, Hisashi Andoh, Masaichi Nagai +4 more | 1994-05-31 |
| 5187052 | Optical recording medium | Yoshihito Maeda, Toshiki Kaneko, Masaichi Nagai, Hisashi Andoh, Isao Ikuta +1 more | 1993-02-16 |