Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7273414 | Race game device | Yuji Nagao, Takanori Akiyama, Naoki Kawajiri, Seiji Hayashi, Susumu Murata +8 more | 2007-09-25 |
| 6629887 | Game device using game token | Susumu Murata, Makoto Tanaka, Katsumi Kobayashi, Tetsuya Hamada, Kazuhiro Hagino +1 more | 2003-10-07 |
| 6394898 | Race game device | Yuji Nagao, Takanori Akiyama, Naoki Kawajiri, Seiji Hayashi, Susumu Murata +8 more | 2002-05-28 |