Issued Patents All Time
Showing 51–56 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6088798 | Digital signature method using an elliptic curve, a digital signature system, and a program storage medium having the digital signature method stored therein | — | 2000-07-11 |
| 5944794 | User identification data management scheme for networking computer systems using wide area network | Toshio Okamoto, Masahiro Ishiyama | 1999-08-31 |
| 5835601 | File editing system and shared file editing system with file content secrecy, file version management, and asynchronous editing | Toshinari Takahashi, Ichiro Tomoda, Masao Murota | 1998-11-10 |
| 5369708 | Fast server-aided computation system and method for modular exponentiation without revealing client's secret to auxiliary device | Shinichi Kawamura | 1994-11-29 |
| 5136642 | Cryptographic communication method and cryptographic communication device | Shinichi Kawamura | 1992-08-04 |
| 5046094 | Server-aided computation method and distributed information processing unit | Shinichi Kawamura, Kyoto Takabayashi | 1991-09-03 |