Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8509444 | Scramble key management unit, scramble key management information transmitting unit, method for scramble key output management, scramble key management program, license information management unit, license management information transmitting unit, method for license information output management, and license information management program | Satoshi Fujitsu, Syunji Sunasaki | 2013-08-13 |
| 7937407 | Access control method, access control system, metadata controlling device, and transmitting apparatus | Jun Goto, Akitsugu Baba, Haruyuki Nakamura, Kiyohiko Ishikawa, Tatsuya Kurioka | 2011-05-03 |
| 7567674 | Content transmission apparatus, content reception apparatus, content transmission program, and content reception program | Tatsuya Kurioka, Toshihiro Uehara, Seiichi Namba | 2009-07-28 |
| 7380135 | Diligent control of preview of stored contents | Tatsuya Kurioka, Seiichi Namba | 2008-05-27 |
| 7356144 | Control of usage of contents in digital broadcasts | Tatsuya Kurioka, Toshihiro Uehara, Seiichi Namba, Haruo Okuda | 2008-04-08 |