Issued Patents 2002
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6499105 | Digital data authentication method | Hiroshi Yoshiura, Ryoichi Sasaki, Seiichi Susaki, Hisashi Toyoshima, Tsukasa Saito | 2002-12-24 |
| 6477254 | Network system using a threshold secret sharing method | Seiji Miyazaki | 2002-11-05 |
| 6466668 | IC card equipped with elliptical curve encryption processing facility | Seiji Miyazaki | 2002-10-15 |
| 6411714 | Data decompression/decryption method and system | Hiroshi Yoshiura, Yusuke Hino, Yutaka Otsu | 2002-06-25 |
| 6370247 | Hash value generating method and device, data encryption method and device, data decryption method and device | Hiroyuki Kurumatani | 2002-04-09 |
| 6341349 | Digital signature generating/verifying method and system using public key encryption | Hiroyuki Kurumatani | 2002-01-22 |