Inventor
SUGAYA NATSUKO
JP20 patents
⚠️ This page may combine multiple inventors who share the name “SUGAYA NATSUKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
18 patentsUS6473754B1Oct 29, 2002
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
HITACHI LTD144 citations98
US6665668B1Dec 16, 2003
Document retrieval method and system and computer readable storage medium
HITACHI LTD144 citations97
US7054860B2May 30, 2006
Method and system for retrieving a document and computer readable storage medium
HITACHI LTD42 citations92
US7039636B2May 2, 2006
Document retrieval method and document retrieval system
HITACHI LTD23 citations92
US6865571B2Mar 8, 2005
Document retrieval method and system and computer readable storage medium
HITACHI LTD33 citations92
US6757676B1Jun 29, 2004
Text mining method and apparatus allowing a user to analyze contents of a document set from plural analysis axes
HITACHI LTD23 citations92
US6549898B1Apr 15, 2003
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
HITACHI LTD28 citations92
US6496820B1Dec 17, 2002
Method and search method for structured documents
HITACHI LTD28 citations92
US6665667B2Dec 16, 2003
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
HITACHI LTD14 citations83
US7440938B2Oct 21, 2008
Method and apparatus for calculating similarity among documents
HITACHI LTD17 citations81
US5970485AOct 19, 1999
News clipping method and system
HITACHI LTD16 citations74
US6826567B2Nov 30, 2004
Registration method and search method for structured documents
HITACHI LTD9 citations73
US6738786B2May 18, 2004
Data display method and apparatus for use in text mining
HITACHI LTD9 citations73
US7333983B2Feb 19, 2008
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
HITACHI LTD2 citations62
US10423613B2Sep 24, 2019
Data search method and data search system
HITACHI LTD0 citations40
US10394870B2Aug 27, 2019
Search method
HITACHI LTD0 citations40
US10368191B2Jul 30, 2019
Confined space estimation system and confined space estimation method
HITACHI LTD0 citations40
US10860960B2Dec 8, 2020
Project support system and method
HITACHI LTD0 citations30