Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11812259 | Authentication system and authentication method | Kyohei Takeuchi, Kohei Kishimoto, Hiroaki Iwashita | 2023-11-07 |
| 10402248 | Method for controlling error rate of device-specific information and program for controlling error rate of device-specific information | Yohei Hori, Toshihiro Katashita, Toshihiro Matsui | 2019-09-03 |
| 8972300 | Content distribution system | Masao Nonaka, Toshihisa Nakano, Yuichi Futa, Motoji Ohmori, Ryo Nojima +1 more | 2015-03-03 |
| 8601590 | Content distribution system | Toshihisa Nakano, Masao Nonaka, Yuichi Futa, Motoji Ohmori, Ryo Nojima +1 more | 2013-12-03 |
| 8422670 | Password authentication method | Seonghan Shin | 2013-04-16 |
| 8180059 | Management apparatus, terminal apparatus, and copyright protection system | Toshihisa Nakano, Nuttapong Attrapadung, Hideki Imai | 2012-05-15 |
| 7925893 | Copyright protection system, modular exponentiation operation apparatus, and modular exponentiation operation method | Toshihisa Nakano, Attrapadung Nuttapong, Hideki Imai | 2011-04-12 |
| 7895436 | Authentication system and remotely-distributed storage system | Hideki Imai, Seonghan Shin | 2011-02-22 |
| 7617536 | Unauthorized device detection device, unauthorized device detection system, unauthorized device detection method, program, recording medium, and device information update method | Masao Nonaka, Toshihisa Nakano, Yuichi Futa, Motoji Ohmori, Takeshi Gomi +1 more | 2009-11-10 |