Inventor
TADA KATSUMI
JP33 patents
⚠️ This page may combine multiple inventors who share the name “TADA KATSUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
29 patentsUS5572728ANov 5, 1996
Conference multimedia summary support system and method
HITACHI LTD182 citations99
US5548724AAug 20, 1996
File server system and file access control method of the same
HITACHI LTD462 citations99
US5548346AAug 20, 1996
Apparatus for integrally controlling audio and video signals in real time and multi-site communication control method
HITACHI LTD183 citations99
US6510425B1Jan 21, 2003
Document search method for registering documents, generating a structure index with elements having position of occurrence in documents represented by meta-nodes
HITACHI LTD75 citations98
US6473754B1Oct 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
US6377946B1Apr 23, 2002
Document search method and apparatus and portable medium used therefor
HITACHI LTD82 citations98
US5887171AMar 23, 1999
Document management system integrating an environment for executing an agent and having means for changing an agent into an object
HITACHI LTD194 citations98
US5832476ANov 3, 1998
Document searching method using forward and backward citation tables
HITACHI LTD173 citations98
US6665668B1Dec 16, 2003
Document retrieval method and system and computer readable storage medium
HITACHI LTD144 citations97
US5748953AMay 5, 1998
Document search method wherein stored documents and search queries comprise segmented text data of spaced, nonconsecutive text elements and words segmented by predetermined symbols
HITACHI LTD103 citations97
US5745745AApr 28, 1998
Text search method and apparatus for structured documents
HITACHI LTD121 citations97
US5469354ANov 21, 1995
Document data processing method and apparatus for document retrieval
HITACHI LTD148 citations96
US7080099B2Jul 18, 2006
Method and system for storing and managing electronic mail
HITACHI LTD37 citations93
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
US6490583B2Dec 3, 2002
Information registration method and document information processing apparatus
HITACHI LTD14 citations92
US6334130B1Dec 25, 2001
Information registration method and document information processing apparatus
HITACHI LTD24 citations92
US6178422B1Jan 23, 2001
Information registration method and document information processing apparatus
HITACHI LTD31 citations92
US5471610ANov 28, 1995
Method for character string collation with filtering function and apparatus
HITACHI LTD50 citations92
US7231388B2Jun 12, 2007
Similar document retrieving method and system
HITACHI LTD24 citations90
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
US7200587B2Apr 3, 2007
Method of searching similar document, system for performing the same and program for processing the same
HITACHI LTD10 citations82
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