Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7694126 | Method and system for recovering the validity of cryptographically signed digital data | Kunihiko Miyazaki, Hiroshi Yoshiura, Seiichi Susaki, Ryoichi Sasaki, Kazuo Takaragi +1 more | 2010-04-06 |
| 7406528 | Method for communication | Chikako Kurita, Kayoko Sakaguchi, Ryohei Shiotani, Nobuaki Ono, Masaki Miyadera +1 more | 2008-07-29 |
| 7210043 | Trusted computer system | Kunihiko Miyazaki, Shinji Itoh, Hiroshi Yoshiura, Kazuo Takaragi, Masato Arai +2 more | 2007-04-24 |
| 7200682 | Time stamp generating system | Kunihiko Miyazaki, Seiichi Susaki, Kazuo Takaragi, Hiroshi Yoshiura, Takeshi Matsuki +3 more | 2007-04-03 |
| 7134021 | Method and system for recovering the validity of cryptographically signed digital data | Kunihiko Miyazaki, Hiroshi Yoshiura, Seiichi Susaki, Ryoichi Sasaki, Kazuo Takaragi +1 more | 2006-11-07 |
| 7010569 | Method of information display and communication system using the method | Satoe Okayasu, Chikako Tsuchiyama | 2006-03-07 |
| 6499105 | Digital data authentication method | Hiroshi Yoshiura, Kazuo Takaragi, Ryoichi Sasaki, Seiichi Susaki, Tsukasa Saito | 2002-12-24 |
| 6131162 | Digital data authentication method | Hiroshi Yoshiura, Kazuo Takaragi, Ryoichi Sasaki, Seiichi Susaki, Tsukasa Saito | 2000-10-10 |