Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7273414 | Race game device | Yuji Nagao, Takanori Akiyama, Naoki Kawajiri, Susumu Murata, Koji Yamaguchi +8 more | 2007-09-25 |
| 6394898 | Race game device | Yuji Nagao, Takanori Akiyama, Naoki Kawajiri, Susumu Murata, Koji Yamaguchi +8 more | 2002-05-28 |