Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7950050 | Authentication system, authentication-service-providing device, authentication-service-providing method, and computer-readable medium | Takeo Yoshida | 2011-05-24 |
| 6845160 | Apparatus and method for depositing encryption keys | — | 2005-01-18 |
| 6748530 | Certification apparatus and method | — | 2004-06-08 |
| 6541562 | Aqueous paint composition | Tadashi Hatakeyama, Hiroharu Sasaki, Kazuyoshi Tsuneta | 2003-04-01 |
| 6530020 | Group oriented public key encryption and key management system | — | 2003-03-04 |
| 5892948 | Programming support apparatus and method | Yasushi Ishikawa, Makoto Muramatsu, Shinichiro Yamamoto | 1999-04-06 |