Issued Patents All Time
Showing 76–80 of 80 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6360320 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, INFORMATION PROCESSING SYSTEM AND RECORDING MEDIUM USING AN APPARATUS ID AND PROVIDED LICENSE KEY FOR AUTHENTICATION OF EACH INFORMATION TO BE PROCESSED | Yoshitomo Osawa, Yoshio Osakabe, Makoto Sato, Hisato Shima, Tomoyuki Asano | 2002-03-19 |
| 6256391 | Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method | Yoshitomo Osawa, Yoshio Osakabe, Makoto Sato, Hisato Shima, Tomoyuki Asano | 2001-07-03 |
| 5917910 | Encrypting method and apparatus, recording method, decrypting method and apparatus, and recording medium | Masafumi Minami | 1999-06-29 |
| 5883958 | Method and device for data decryption, a method and device for device identification, a recording medium, a method of disk production, and a method and apparatus for disk recording | Yoshitomo Osawa | 1999-03-16 |
| 5796839 | Encryption method, encryption apparatus, recording method, decoding method, decoding apparatus and recording medium | — | 1998-08-18 |