Issued Patents 2004
Showing 1–1 of 1 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 | Yoshihito Ishibashi, Toru Akishita, Taizo Shirai, Takeshi Ito, Shigekazu Hayashi | 2004-12-21 |