Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7752216 | Retrieval apparatus, retrieval method and retrieval program | Kentaro Chigusa, Kazutomo Ushijima, Tsuyoshi Sudo | 2010-07-06 |
| 7689545 | System and method to enable parallel text search using in-charge index ranges | Michio Iijima, Yuichi Ogawa, Masaki Yotsutani, Shinya Yamamoto | 2010-03-30 |
| 7620614 | Method, program and apparatus for document retrieval system | Kazunari Sugiyama, Katsushi Yako, Yasufumi Sato, Jugo Noda, Nobuo Kawamura | 2009-11-17 |
| 7558802 | Information retrieving system | Katsushi Yako, Norihiro Hara | 2009-07-07 |
| 7440938 | Method and apparatus for calculating similarity among documents | Natsuko Sugaya, Michio Iijima, Yuichi Ogawa, Yuuki Watanabe, Shinya Yamamoto +1 more | 2008-10-21 |
| 7333983 | Method of and an apparatus for retrieving and delivering documents and a recording media on which a program for retrieving and delivering documents are stored | Yasuhiko Inaba, Katsumi Tada, Takuya Okamoto, Natsuko Sugaya, Yousuke Ushiroji | 2008-02-19 |
| 7231388 | Similar document retrieving method and system | Katsumi Tada, Yoshifumi Sato, Yasuhiko Inaba, Shin Yamamoto | 2007-06-12 |
| 7200587 | Method of searching similar document, system for performing the same and program for processing the same | Katsumi Tada, Yoshifumi Sato, Yasuhiko Inaba, Jugo Noda | 2007-04-03 |
| 7130849 | Similarity-based search method by relevance feedback | Takaaki Yayoi, Yasuhiko Inaba, Yuichi Ogawa, Shinya Yamamoto, Masayuki Hamakawa | 2006-10-31 |
| 7054860 | Method and system for retrieving a document and computer readable storage medium | Yasuhiko Inaba, Katsumi Tada, Natsuko Sugaya, Akihiko Yamaguchi, Mikihiko Tokunaga | 2006-05-30 |
| 7039636 | Document retrieval method and document retrieval system | Katsumi Tada, Takuya Okamoto, Natsuko Sugaya, Yasuhiko Inaba, Yasushi Kawashimo | 2006-05-02 |
| 6865571 | Document retrieval method and system and computer readable storage medium | Yasuhiko Inaba, Katsumi Tada, Natsuko Sugaya, Akihiko Yamaguchi, Mikihiko Tokunaga | 2005-03-08 |
| 6826567 | Registration method and search method for structured documents | Katsumi Tada, Natsuko Sugaya, Takuya Okamoto, Yasushi Kawashimo | 2004-11-30 |
| 6757676 | Text mining method and apparatus allowing a user to analyze contents of a document set from plural analysis axes | Natsuko Sugaya, Katsumi Tada, Akihiko Yamaguchi, Yasuhiko Inaba, Mikihiko Tokunaga | 2004-06-29 |
| 6738786 | Data display method and apparatus for use in text mining | Natsuko Sugaya, Katsumi Tada, Yoshifumi Sato, Yasuhiko Inaba, Mikihiko Tokunaga | 2004-05-18 |
| 6665667 | Method of and an apparatus for retrieving and delivering documents and a recording media on which a program for retrieving and delivering documents are stored | Yasuhiko Inaba, Katsumi Tada, Takuya Okamoto, Natsuko Sugaya, Yousuke Ushiroji | 2003-12-16 |
| 6665668 | Document retrieval method and system and computer readable storage medium | Natsuko Sugaya, Katsumi Tada, Akihiko Yamaguchi, Yasuhiko Inaba, Yousuke Ushiroji | 2003-12-16 |
| 6549898 | Method of and an apparatus for retrieving and delivering documents and a recording media on which a program for retrieving and delivering documents are stored | Yasuhiko Inaba, Katsumi Tada, Takuya Okamoto, Natsuko Sugaya, Yousuke Ushiroji | 2003-04-15 |
| 6496820 | Method and search method for structured documents | Katsumi Tada, Natsuko Sugaya, Takuya Okamoto, Yasushi Kawashimo | 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 | Katsumi Tada, Takuya Okamoto, Natsuko Sugaya, Yasushi Kawashimo | 2002-10-29 |