Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7974603 | Authentication vector generating device, subscriber authentication module, mobile communication system, and authentication vector generation method | Hidetoshi Ishikawa, Hiroshi Umeno | 2011-07-05 |
| 7817984 | Mobile communication terminal and computer program thereof, IC card and computer program thereof, and mobile communication terminal system | Hidetoshi Ishikawa | 2010-10-19 |
| 6644554 | IC card | Taichi Kaneko, Eiji Hirosawa | 2003-11-11 |
| 4720626 | IC card processing method and processing device therefor, and IC card | Seiichi Nishikawa, Koichi Okada | 1988-01-19 |