Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6811083 | IC card, and method and program for preventing illegal use of IC card | Kenji Kojima, Kentaro Umesawa, Hideyuki Miyake, Tatsuyuki Matsushita, Hideo Shimizu +1 more | 2004-11-02 |