Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7039636 | Document retrieval method and document retrieval system | Katsumi Tada, Takuya Okamoto, Natsuko Sugaya, Tadataka Matsubayashi, Yasuhiko Inaba | 2006-05-02 |
| 6826567 | Registration method and search method for structured documents | Katsumi Tada, Natsuko Sugaya, Tadataka Matsubayashi, Takuya Okamoto | 2004-11-30 |
| 6496820 | Method and search method for structured documents | Katsumi Tada, Natsuko Sugaya, Tadataka Matsubayashi, Takuya Okamoto | 2002-12-17 |
| 6473754 | METHOD AND SYSTEM FOR EXTRACTING CHARACTERISTIC STRING, METHOD AND SYSTEM FOR SEARCHING FOR RELEVANT DOCUMENT USING THE SAME, STORAGE MEDIUM FOR STORING CHARACTERISTIC STRING EXTRACTION PROGRAM, AND STORAGE MEDIUM FOR STORING RELEVANT DOCUMENT SEARCHING PROGRAM | Tadataka Matsubayashi, Katsumi Tada, Takuya Okamoto, Natsuko Sugaya | 2002-10-29 |
| 6003043 | Text data registering and retrieving system including a database storing a plurality of document files therin and a plural-character occurrence table for a text index and an update text buffer to retrieve a target document in cooperation with the database | Atsushi Hatakeyama, Shunichi Torii, Nobuo Kawamura | 1999-12-14 |