Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6823420 | Entertainment apparatus | Yasuyuki Yamamoto, Yuichi Inomata, Shinichi Fukushima, Shigekazu Hayashi | 2004-11-23 |
| 6659860 | Game device, game machine operation device and game system which employ a half-duplex serial communication system and game device two-way communication method | Yasuyuki Yamamoto, Makoto Tanaka | 2003-12-09 |
| 5306172 | Video tape recorder having built-in camera detachable hand grip member | Shinsaku Inada, Eiji Ohshima, Masayoshi Morikawa | 1994-04-26 |
| 5157512 | Video tape recorder having built-in camera detachable hand grip member | Shinsaku Inada, Eiji Ohshima, Masayoshi Morikawa | 1992-10-20 |