Issued Patents All Time
Showing 1–25 of 134 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10455189 | Playback method and playback device | Masayuki Kozuka, Masaya Yamamoto | 2019-10-22 |
| 10419789 | Information processing method, information processor, and recording medium | Masayuki Kozuka, Masaya Yamamoto, Tadamasa TOMA | 2019-09-17 |
| 10291879 | Playback method and playback device | Masayuki Kozuka, Masaya Yamamoto | 2019-05-14 |
| 10169551 | Content reading method for reading out copyright-protected content from non-transitory recording medium, content reading apparatus, and non-transitory recording medium | Masaya Yamamoto | 2019-01-01 |
| 10028020 | File generating method and file generating apparatus | Tadamasa TOMA, Masaya Yamamoto, Hiroshi Yahata, Tomoki Ogawa, Masayuki Kozuka | 2018-07-17 |
| 9946849 | Content reading method for reading out copyright-protected content from non-transitory recording medium, content reading apparatus, and non-transitory recording medium | Masaya Yamamoto | 2018-04-17 |
| 9912903 | Playback method and playback device | Masayuki Kozuka, Masaya Yamamoto | 2018-03-06 |
| 9865299 | Information processing device, information recording medium, information processing method, and program | Kenjiro Ueda, Tateo Oishi, Kouichi Uchimura, Masaya Yamamoto, Hiroshi Yahata | 2018-01-09 |
| 9818446 | File producing method, file producing device, and recording medium | Tadamasa TOMA, Tomoki Ogawa, Hiroshi Yahata, Masayuki Kozuka, Masaya Yamamoto | 2017-11-14 |
| 9654823 | File generating method and file generating apparatus | Tadamasa TOMA, Masaya Yamamoto, Hiroshi Yahata, Tomoki Ogawa, Masayuki Kozuka | 2017-05-16 |
| 9596499 | Content recording method, recording apparatus, and recording system | Masayuki Kozuka, Masaya Yamamoto, Hiroshi Yahata, Shingo Matsumoto, Tadamasa TOMA +1 more | 2017-03-14 |
| 9270470 | Unauthorized contents detection system | Masao Nonaka, Yuichi Futa, Toshihisa Nakano, Kaoru Yokota, Motoji Ohmori +3 more | 2016-02-23 |
| 9178702 | Revocation list generation device, revocation list generation method, and content management system | Masayuki Kozuka, Takahiro Yamaguchi, Toshihisa Nakano, Motoji Ohmori, Makoto Morise +1 more | 2015-11-03 |
| 9166980 | Content management system, management server, memory media device and content management method | Masayuki Kozuka, Toshihisa Nakano, Takahiro Yamaguchi, Motoji Ohmori, Masataka Minami +1 more | 2015-10-20 |
| 9106882 | Terminal device, content recording system, title key recording method, and computer program | Takahiro Yamaguchi, Toshihisa Nakano, Motoji Ohmori | 2015-08-11 |
| 8997216 | Recording medium apparatus and control method for authenticating a device based on a revocation list | Masayuki Kozuka, Takahiro Yamaguchi, Toshihisa Nakano, Masataka Minami, Makoto Morise +1 more | 2015-03-31 |
| 8984658 | Copyright protection data processing system and reproduction device | Takahiro Yamaguchi, Masaya Yamamoto, Sanzo Ugawa, Toshihisa Nakano | 2015-03-17 |
| 8972737 | Unauthorized contents detection system | Masao Nonaka, Yuichi Futa, Toshihisa Nakano, Kaoru Yokota, Motoji Ohmori +3 more | 2015-03-03 |
| 8731192 | Reproducing device, recording device, recording medium, data processing method, data processing program, data recording method, data recording program, and integrated circuit | Masaya Yamamoto, Senichi Onoda, Minehisa Nagata | 2014-05-20 |
| 8667291 | Unauthorized contents detection system | Masao Nonaka, Yuichi Futa, Toshihisa Nakano, Kaoru Yokota, Motoji Ohmori +3 more | 2014-03-04 |
| 8644669 | Recording medium, reproduction device, message acquisition method, message acquisition program, integrated circuit | Shunji Harada, Masayuki Kozuka, Masaya Yamamoto, Senichi Onoda, Minehisa Nagata | 2014-02-04 |
| 8607052 | Management apparatus and copying apparatus | Toshihisa Nakano, Masataka Minami, Masaya Yamamoto, Takahiro Yamaguchi | 2013-12-10 |
| 8474049 | Verification method, information processing device, recording medium, verification system, certification program, and verification program | Senichi Onoda, Masaya Yamamoto, Toshihisa Nakano, Masayuki Kozuka, Takashi Yamanishi +4 more | 2013-06-25 |
| 8369688 | Information burying device and detecting device | Toshihisa Nakano, Shunji Harada, Masaya Yamamoto, Tomoki Ogawa, Ryoji Suzuki +1 more | 2013-02-05 |
| 8325917 | Reproducing device, recording device, recording medium, data processing method, data processing program, data recording method, data recording program, and integrated circuit | Masaya Yamamoto, Senichi Onoda, Minehisa Nagata | 2012-12-04 |