Issued Patents All Time
Showing 1–25 of 92 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9130741 | Data protection system that protects data by encrypting the data | Toshihisa Nakano, Motoji Ohmori, Natsume Matsuzaki | 2015-09-08 |
| 8661553 | Semiconductor memory card and data reading apparatus, and data reading/reproducing apparatus | Teruto Hirota, Taihei Yugawa, Masataka Minami, Masayuki Kozuka | 2014-02-25 |
| 8416953 | Data protection system that protects data by encrypting the data | Toshihisa Nakano, Motoji Ohmori, Natsume Matsuzaki | 2013-04-09 |
| 8275998 | Encryption device, key distribution device and key distribution system | Toshihisa Nakano, Hideshi Ishihara | 2012-09-25 |
| 8144869 | Content protection system, key data generation apparatus, and terminal apparatus | Toshihisa Nakano, Motoji Ohmori, Natsume Matsuzaki, Naoki Yamamoto, Hideshi Ishihara | 2012-03-27 |
| 8140675 | Content reproduction apparatus | Kaoru Yokota, Motoji Ohmori, Koichi Morioka, Hideshi Ishihara | 2012-03-20 |
| 8132024 | Digital work protection system, recording apparatus, reproduction apparatus, and recording medium | Toshihisa Nakano, Masato Yamamichi, Yuichi Futa, Motoji Ohmori, Shunji Harada +1 more | 2012-03-06 |
| 8127368 | Semiconductor memory card and data reading apparatus, and data reading/reproducing apparatus | Teruto Hirota, Taihei Yugawa, Masataka Minami, Masayuki Kozuka | 2012-02-28 |
| 8051284 | Encryption communications system | Toshihisa Nakano, Motoji Omori | 2011-11-01 |
| 8048174 | Theft prevention system | Masato Yamamichi, Satomi Yamamichi, Keiko Yamamichi, Toshihisa Nakano, Kaoru Yokota +2 more | 2011-11-01 |
| 7996914 | Semiconductor memory card and data reading apparatus, and data reading/reproducing apparatus | Teruto Hirota, Taihei Yugawa, Masataka Minami, Masayuki Kozuka | 2011-08-09 |
| 7929688 | Parameter generation apparatus, encryption system, decryption system, encryption apparatus, decryption apparatus, encryption method, decryption method, and program thereof | Masato Yamamichi, Yuichi Futa, Motoji Ohmori | 2011-04-19 |
| 7886365 | Content-log analyzing system and data-communication controlling device | Yuichi Futa, Motoji Ohmori, Hirohito Kitatora, Natsume Matsuzaki, Kaoru Yokotoa | 2011-02-08 |
| 7865716 | Encryption device, key distribution device and key distribution system | Toshihisa Nakano, Hideshi Ishihara | 2011-01-04 |
| 7831831 | Authentication communication system, authentication communication apparatus, and authentication communication method | Motoji Ohmori, Toshihisa Nakano, Takahiro Nagai, Hideshi Ishihara | 2010-11-09 |
| 7813512 | Encrypted communication system and communication device | Yuichi Futa, Masato Yamamichi, Motoji Ohmori | 2010-10-12 |
| 7739519 | Secure device | Natsume Matsuzaki, Kazuo Sakushima | 2010-06-15 |
| 7707430 | Digital content protection system | Yutaka Nakamura, Shunji Harada, Masayuki Kozuka | 2010-04-27 |
| 7702109 | Content recording/reproducing system, distribution device, reproducing device, and recording device | Yuichi Futa, Masato Yamamichi, Motoji Ohmori, Masaya Yamamoto | 2010-04-20 |
| 7657739 | Authentication system | Toshihisa Nakano, Hideshi Ishihara | 2010-02-02 |
| 7647646 | Information input/output system, key management device, and user device | Toshihisa Nakano, Motoji Ohmori, Hideshi Ishihara | 2010-01-12 |
| 7620993 | Copyright protection system, key generation apparatus, recording apparatus, reproduction apparatus, read-out apparatus, decryption apparatus, recording medium, recording method and program | Naoki Yamamoto, Hideshi Ishihara, Toshihisa Nakano | 2009-11-17 |
| 7603554 | Encryption communication system | Yuichi Futa, Masato Yamamichi, Motoji Ohmori | 2009-10-13 |
| 7577251 | Data player, digital contents player, playback system, data embedding apparatus, and embedded data detection apparatus | Hirotsugu Kawada, Noboru Katta, Susumu Ibaraki, Shunji Harada | 2009-08-18 |
| 7555779 | Copyright protection system, recording device, and reproduction device | Toshihisa Nakano, Shunji Harada, Natsume Matsuzaki | 2009-06-30 |