Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5583840 | ROM type optical recording medium with a high reflectivity and an optical head operable on ROM, write-one and rewritable disk | Hiroyuki Minemura, Yoshio Sato, Nobuyoshi Tsuboi, Hisashi Andoh, Masaichi Nagai +4 more | 1996-12-10 |
| 5572502 | Optical disk apparatus | Atsuko Naruse, Yoshihito Maeda, Isao Ikuta, Hisashi Andoh, Masaichi Nagai +4 more | 1996-11-05 |
| 5475656 | Optical disk memory and information processing apparatus | Yoshio Sato, Nobuyoshi Tsuboi, Hiroyuki Minemura, Hisashi Andoh, Masaichi Nagai +4 more | 1995-12-12 |
| 5420845 | Methods of varying optical properties, optical devices, information recording media and information recording methods and apparatuses | Yoshihito Maeda, Isao Ikuta, Masaichi Nagai, Hisashi Andoh, Nobuo Tsukamoto | 1995-05-30 |
| 5274612 | Information processor and disk memory used in the same | Yoshio Sato, Nobuyoshi Tsuboi, Hiroyuki Minemura, Hisashi Andoh, Masaichi Nagai +4 more | 1993-12-28 |