Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5778421 | Information processing system which can check disk-like storage medium having prescribed relation therewith and disk-like storage medium therefor | Masakazu Nagano, Kunihiro Tanaka, Hiroshi Sato | 1998-07-07 |
| 5599231 | Security systems and methods for a videographics and authentication game/program fabricating device | Satoshi Yamato | 1997-02-04 |
| 5550999 | Information processing system which can check secondary storage medium having prescribed relation therewith and secondary storage device therefor | Masakazu Nagano, Kunihiro Tanaka, Hiroshi Sato | 1996-08-27 |
| 5457668 | Data processing system with collating processing at start up for determining the presence of an improper optical CD | Sagahiro Taho | 1995-10-10 |
| 4844465 | Adaptor of a cartridge for gaming machine | Yoshihiro Inoue | 1989-07-04 |