Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6477254 | Network system using a threshold secret sharing method | Kazuo Takaragi | 2002-11-05 |
| 6466668 | IC card equipped with elliptical curve encryption processing facility | Kazuo Takaragi | 2002-10-15 |
| RE37762 | Scanning exposure apparatus and exposure method | Kei Nara, Masami Seki, Masamitsu Yanagihara, Tomohide Hamada | 2002-06-25 |
| 6380427 | Process for purification of (meth)acrylic acid | Akira Ogawa, Yasutaka Nakashima, Yoshiaki KOBAYASHI, Mikiyoshi Araki | 2002-04-30 |