Issued Patents All Time
Showing 76–100 of 125 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8132024 | Digital work protection system, recording apparatus, reproduction apparatus, and recording medium | Toshihisa Nakano, Masato Yamamichi, Motoji Ohmori, Makoto Tatebayashi, Shunji Harada +1 more | 2012-03-06 |
| 8127168 | Data processing device for reducing power consumption while operating a virtualized environment, and a non-transitory computer-readable recording medium and integrated circuit for performing the same | Manabu Maeda, Tomoyuki Haga, Takayuki Ito, Hideki Matsushima | 2012-02-28 |
| 8090957 | Information security device, information security method, computer program, computer-readable recording medium, and integrated circuit | Natsume Matsuzaki | 2012-01-03 |
| 8024577 | Password recovery system | Motoji Ohmori, Natsume Matsuzaki | 2011-09-20 |
| 7995766 | Group subordinate terminal, group managing terminal, server, key updating system, and key updating method therefor | Taichi Sato, Kaoru Yokota, Natsume Matsuzaki, Tetsuya Inoue, Masao Nonaka | 2011-08-09 |
| 7984489 | Device registration system and device registration apparatus | Natsume Matsuzaki, Masaya Miyazaki, Toshihisa Nakano, Hiroki Yamauchi, Soichiro Fujioka +1 more | 2011-07-19 |
| 7979731 | Time authentication device, time authentication method, computer program, recording medium, integrated circuit, and time authentication system | Natsume Matsuzaki, Hiroki Yamauchi, Toshihisa Nakano | 2011-07-12 |
| 7958240 | Group judgment device | Hiroki Yamauchi, Yuusaku Ohta, Natsume Matsuzaki | 2011-06-07 |
| 7949703 | Group admission system and server and client therefor | Natsume Matsuzaki, Toshihisa Nakano | 2011-05-24 |
| 7940927 | Information security device and elliptic curve operating device | Natsume Matsuzaki | 2011-05-10 |
| 7936874 | Information transfer system, encryption device, and decryption device | Motoji Ohmori | 2011-05-03 |
| 7929688 | Parameter generation apparatus, encryption system, decryption system, encryption apparatus, decryption apparatus, encryption method, decryption method, and program thereof | Masato Yamamichi, Motoji Ohmori, Makoto Tatebayashi | 2011-04-19 |
| 7925697 | Group judgment device | Hiroki Yamauchi, Yuusaku Ohta, Natsume Matsuzaki | 2011-04-12 |
| 7917764 | Signature generation device and signature verification device | Shingo Hasegawa, Shuji Isobe, Motoji Ohmori, Hiroki Shizuya | 2011-03-29 |
| 7898570 | Digital camera system with means for restricting image acquisition | Kaoru Yokota, Toshihisa Nakano, Motoji Ohmori, Shuichi Ohki | 2011-03-01 |
| 7900062 | Unauthorized contents detection system | Masao Nonaka, Toshihisa Nakano, Kaoru Yokota, Motoji Ohmori, Masaya Miyazaki +3 more | 2011-03-01 |
| 7886365 | Content-log analyzing system and data-communication controlling device | Motoji Ohmori, Hirohito Kitatora, Natsume Matsuzaki, Makoto Tatebayashi, Kaoru Yokotoa | 2011-02-08 |
| 7860255 | Content distribution server, key assignment method, content output apparatus, and key issuing center | Masao Nonaka, Motoji Ohmori, Shigeru Yamada, Tetsuya Inoue, Yoji Kumazaki | 2010-12-28 |
| 7813512 | Encrypted communication system and communication device | Masato Yamamichi, Motoji Ohmori, Makoto Tatebayashi | 2010-10-12 |
| 7792286 | Signature generation device and signature verification device | Shingo Hasegawa, Shuji Isobe, Motoji Ohmori, Hiroki Shizuya | 2010-09-07 |
| 7773746 | Encryption system, encryption device, decryption device, program, and integrated circuit | Masato Yamamichi, Motoji Ohmori | 2010-08-10 |
| 7774852 | Health care system, key management server and method for managing key, and encrypting device and method for encrypting vital sign data | Kaoru Yokota, Masao Nonaka, Natsume Matsuzaki, Shunji Harada | 2010-08-10 |
| 7743261 | Unauthorized contents detection system | Masao Nonaka, Toshihisa Nakano, Kaoru Yokota, Motoji Ohmori, Masaya Miyazaki +3 more | 2010-06-22 |
| 7739504 | Signature generation apparatus and signature verification apparatus | Shingo Hasegawa, Shuji Isobe, Motoji Ohmori, Hiroki Shizuya | 2010-06-15 |
| 7724897 | Program converter, encrypting device, and encrypting method | Kaoru Yokota, Motoji Ohmori | 2010-05-25 |