Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8037312 | Method and apparatus for digital signature authentication, and computer product | Masahiko Takenaka, Takashi Yoshioka | 2011-10-11 |
| 7970131 | Elliptic curve cryptosystem apparatus, storage medium storing elliptic curve cryptosystem program, and elliptic curve cryptosystem arithmetic method | Tsuyoshi Takagi | 2011-06-28 |
| 7900050 | Digital document management system, digital document management method, and digital document management program | Masahiko Takenaka, Takashi Yoshioka | 2011-03-01 |