Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8073140 | Encryption/decryption device, encryption/decryption method, and computer program | Kyoji Shibutani | 2011-12-06 |
| 8031866 | Cryptographic processing apparatus and cryptographic processing method, and computer program | Kyoji Shibutani | 2011-10-04 |
| 7996335 | Information processing device, contents distribution server, license server, and method and computer program | Masafumi Kusakawa | 2011-08-09 |
| 7925017 | Information recording device, information playback device, information recording medium, information recording method, information playback method, and program providing medium | Yoshihito Ishibashi, Kenji Yoshino, Toru Akishita, Takeshi Ito, Shigekazu Hayashi | 2011-04-12 |