Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7765604 | Information processing method, information processing apparatus and recording medium | Koichi Tanaka, Itaru Kawakami, Ryuji Ishiguro | 2010-07-27 |
| 7260721 | Information processing method, information processing apparatus and recording medium | Koichi Tanaka, Itaru Kawakami, Ryuji Ishiguro | 2007-08-21 |
| 5265083 | Portable disc player | Toshiyuki Ishii, Takao Ihashi, Hitoshi Nozaki | 1993-11-23 |