Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6834333 | Data processing device, data storage device, data processing method, and program providing medium for storing content protected under high security management | Kenji Yoshino, Toru Akishita, Taizo Shirai, Takeshi Ito, Shigekazu Hayashi | 2004-12-21 |
| 6834346 | Content processing system | Tateo Oishi, Tomoyuki Asano, Yoshitomo Osawa | 2004-12-21 |
| 6820203 | Security unit for use in memory card | Takumi Okaue, Yukihiro Sakamoto, Asami Mizuno, Nobuyuki Kihara, Teppei Yokota | 2004-11-16 |
| 6728379 | Information processor and information processing method | Yoshitomo Osawa, Tateo Oishi, Tomoyuki Asano | 2004-04-27 |