Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6978368 | Method for detecting invalid electronic storage media and card system using the method | Michio Sato | 2005-12-20 |
| 6708878 | Service providing method | Toshihiro Eguchi, Michio Sato, Hirofumi Nagano, Toshiro Sasaki | 2004-03-23 |
| 6597310 | Collection/delivery navigation system | Masakazu Itoh | 2003-07-22 |
| 6335702 | Collection/delivery navigation system | Masakazu Itoh | 2002-01-01 |
| 6196461 | Value data charging method and system for implementing the same | — | 2001-03-06 |