Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8031869 | Information recording medium, usage management method, and usage management apparatus | Masaru Yamaoka, Takashi Yumiba, Takahiro Nagai | 2011-10-04 |
| 7979915 | Recording device, replay device, integrated circuit, and control program | Toshihisa Nakano, Kenji Muraki, Masayuki Kozuka | 2011-07-12 |
| 7975206 | Information recording device and method, information reproducing device and method, recording medium, program, and disc recording medium | Shoei Kobayashi, Susumu Senshu, Tamotsu Yamagami, Makoto Usui, Mitsurou Moriya +3 more | 2011-07-05 |
| 7865716 | Encryption device, key distribution device and key distribution system | Toshihisa Nakano, Makoto Tatebayashi | 2011-01-04 |