Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6490583 | Information registration method and document information processing apparatus | Katsumi Tada, Kazuhiro Hashimoto, Shigeru Kameda, Akio Azuma | 2002-12-03 |
| 6434551 | Structured-text cataloging method, structured-text searching method, and portable medium used in the methods | Toru Takahashi, Hisamitsu Kawaguchi | 2002-08-13 |
| 6389413 | Structured-text cataloging method, structured-text searching method, and portable medium used in the methods | Toru Takahashi, Hisamitsu Kawaguchi | 2002-05-14 |
| 6377946 | Document search method and apparatus and portable medium used therefor | Takuya Okamoto, Toru Takahashi, Hisamitsu Kawaguchi, Katsumi Tada | 2002-04-23 |