Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8712048 | Information recording medium and information processing method for accessing content with license or copyright protection | Tsuyoshi Nakayama, Yoshimichi Kitaya, Yoshikazu Kouno | 2014-04-29 |
| 7734047 | Information recording medium, information processing device, information processing method, and computer program | Tsuyoshi Nakayama, Yoshimichi Kitaya, Yoshikazu Kouno | 2010-06-08 |