Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8653177 | Semiconductive resin composition | Ryuji Yamamoto | 2014-02-18 |
| 7879941 | Heat-resistant sliding resin composition, production process and use therof | Ryuji Yamamoto, Satoshi Miyake | 2011-02-01 |
| 7569161 | Electrically conducting polymer and production method and use thereof | Ryuji Yamamoto, Toshio Morita | 2009-08-04 |
| 7273414 | Race game device | Takanori Akiyama, Naoki Kawajiri, Seiji Hayashi, Susumu Murata, Koji Yamaguchi +8 more | 2007-09-25 |
| 6394898 | Race game device | Takanori Akiyama, Naoki Kawajiri, Seiji Hayashi, Susumu Murata, Koji Yamaguchi +8 more | 2002-05-28 |
| 5645486 | Gaming system that pays out a progressive bonus using a lottery | Keiji Yano | 1997-07-08 |
| 5423539 | Slot machine with payout modifying symbols | — | 1995-06-13 |
| 5209479 | Clot machine | Yoshihiro Kinoshita | 1993-05-11 |
| 5050881 | Slot machine | — | 1991-09-24 |