Issued Patents All Time
Showing 1–11 of 11 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 |
| 7526645 | Electronic document authenticity assurance method and electronic document disclosure system | Kunihiko Miyazaki, Mitsuru Iwamura, Tsutomu Matsumoto, Ryoichi Sasaki, Hiroshi Yoshiura +3 more | 2009-04-28 |
| 7270261 | Print management system | Hideo Noyama, Shuji Terada | 2007-09-18 |
| 7224820 | Electronic document, genuineness management method for print medium thereof, genuineness management system, program, and program recording medium | Hirofumi Inomata, Hiroshi Yoshiura, Hideo Noyama | 2007-05-29 |
| 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, Hisashi Toyoshima +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 |
| 7131776 | Printed matter reliability decision method | Hirokazu Aoshima, Yoshiyasu TAKAHASHI, Yasuhiro Fujii, Hideo Noyama | 2006-11-07 |
| 6816969 | Digital signature generating method and digital signature verifying method | Kunihiko Miyazaki, Ryoichi Sasaki, Kazuo Takaragi, Seiichi Susaki, Hisanori Mishima +3 more | 2004-11-09 |
| 5315634 | Automatic trading method and apparatus | Kazuaki Tanaka, Kazuo Takaragi | 1994-05-24 |
| 4229675 | Color picture tube with internal funnel shaped magnetic shield | Koichi Maruyama, Kuniharu Osakabe, Sakae Kunitoh | 1980-10-21 |