Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7239701 | Key sharing method, secret key generating method, common key generating method and cryptographic communication method in ID-NIKS cryptosystem | Kiyoshi Ogishi, Ryuichi Sakai | 2007-07-03 |
| 7080255 | Secret key generation method, encryption method, and cryptographic communications method and system | Yasuyuki Murakami, Shigeo Tsujii | 2006-07-18 |
| 7065210 | Secret key generation method, encryption method, cryptographic communications method, common key generator, cryptographic communications system, and recording media | Shigeo Tsujii | 2006-06-20 |
| 7043018 | Prime number generation method, prime number generation apparatus, and cryptographic system | Yoshizo Sato, Yasuyuki Murakami | 2006-05-09 |
| 6996724 | Secret key generating method, common key generating method, encryption method, cryptographic communication method and cryptographic communication system | Yasuyuki Murakami, Shigeo Tsujii | 2006-02-07 |
| 6990200 | Encryption method, cryptographic communication method, ciphertext generating device and cryptographic communication system of public-key cryptosystem | Yasuyuki Murakami | 2006-01-24 |
| 6798884 | Encryption method, decryption method, encryption/decryption method, cryptographic communications system, and computer usable medium | Yasuyuki Murakami | 2004-09-28 |
| 6788788 | Cryptographic communication method, encryption method, and cryptographic communication system | Yasuyuki Murakami | 2004-09-07 |
| 6785388 | Encryption method, decryption method, encryption/decryption method, cryptographic communications system, and computer usable medium | Yasuyuki Murakami | 2004-08-31 |
| 6683953 | Encoding method, encoding-decoding apparatus, and code communications system | Shinya Kiuchi, Yasuyuki Murakami | 2004-01-27 |
| 4592054 | Decoder with code error correcting function | Toshihiko Namekawa, Kinichiro Tokiwa, Tohru Inoue, Shigeru Okamura | 1986-05-27 |