Issued Patents All Time
Showing 25 most recent of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9282280 | Digital recording apparatus and copyright protection method thereof | Hisato Shima, Harumi Kawamura | 2016-03-08 |
| 9049009 | Data transmission system | Tomoyuki Asano, Yoshitomo Osawa, Ryuji Ishiguro | 2015-06-02 |
| RE45473 | Copy protection using detailed copy control information | Tomoyuki Asano, Yoshitomo Osawa, Ichiro Hamada | 2015-04-14 |
| 8422675 | Data transmission system | Tomoyuki Asano, Yoshitomo Osawa, Ryuji Ishiguro | 2013-04-16 |
| 8050536 | Digital recording apparatus and copyright protection method thereof | Hisato Shima, Harumi Kawamura | 2011-11-01 |
| 8005214 | Data transmission system | Tomoyuki Asano, Yoshitomo Osawa, Ryuji Ishiguro | 2011-08-23 |
| 7587597 | Data transmission system | Tomoyuki Asano, Yoshitomo Osawa, Ryuji Ishiguro | 2009-09-08 |
| 7412606 | Copy protection using detailed copy control information | Tomoyuki Asano, Yoshitomo Osawa, Ichiro Hamada | 2008-08-12 |
| 7296153 | Data transmission system | Tomoyuki Asano, Yoshitomo Osawa, Ryuji Ishiguro | 2007-11-13 |
| 7263613 | Data transmission system | Tomoyuki Asano, Yoshitomo Osawa, Ryuji Ishiguro | 2007-08-28 |
| 7221853 | Digital recording apparatus and copyright protection method thereof | Hisato Shima, Harumi Kawamura | 2007-05-22 |
| 7134023 | Data transmission system | Tomoyuki Asano, Yoshitomo Osawa, Ryuji Ishiguro | 2006-11-07 |
| 7085930 | Data transmission system | Tomoyuki Asano, Yoshitomo Osawa, Ryuji Ishiguro | 2006-08-01 |
| 7073060 | Data transmission system | Tomoyuki Asano, Yoshitomo Osawa, Ryuji Ishiguro | 2006-07-04 |
| 7073061 | Data transmission system | Tomoyuki Asano, Yoshitomo Osawa, Ryuji Ishiguro | 2006-07-04 |
| 6978377 | Copy protection using detailed copy control information | Tomoyuki Asano, Yoshitomo Osawa, Ichiro Hamada | 2005-12-20 |
| 6975726 | Data transmission system | Tomoyuki Asano, Yoshitomo Osawa, Ryuji Ishiguro | 2005-12-13 |
| 6944763 | Data transmission system | Tomoyuki Asano, Yoshitomo Osawa, Ryuji Ishiguro | 2005-09-13 |
| 6622249 | Data recording apparatus | Yasuhiro Takada | 2003-09-16 |
| 6442330 | Digital signal processor, processing method, digital signal recording/playback device and digital signal playback method | Naofumi Yanagihara, Hisato Shima | 2002-08-27 |
| 6298196 | Digital recording apparatus and copyright protection method thereof | Hisato Shima, Harumi Kawamura | 2001-10-02 |
| 6285824 | Digital signal processor, processing method, digital signal recording/playback device and digital signal playback method | Naofumi Yanagihara, Hisato Shima | 2001-09-04 |
| 6253019 | Digital signal processor, processing method, digital signal recording/playback device and digital signal playback method | Naofumi Yanagihara, Hisato Shima | 2001-06-26 |
| 6223285 | Method and system for transferring information using an encryption mode indicator | Yoshitomo Osawa, Hisato Shima, Tomoyuki Asano | 2001-04-24 |
| 5991307 | Method and apparatus for packet transmission | Takehiko Nakano | 1999-11-23 |