Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7367047 | Portable information recording medium | Kazuyoshi Irisawa, Naoto Shibata | 2008-04-29 |
| 7325144 | Portable information processor having password code checking function | Kazuyoshi Irisawa, Naoto Shibata | 2008-01-29 |
| 7302572 | Portable information storage medium and its authentication method | Kazuyoshi Irisawa, Naoto Shibata | 2007-11-27 |