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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Method of and an apparatus for retrieving and delivering documents...
Patent number
7,333,983
Issue date
Feb 19, 2008
Hitachi, Ltd.
Yasuhiko Inaba
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Similar document retrieving method and system
Patent number
7,231,388
Issue date
Jun 12, 2007
Hitachi, Ltd.
Tadataka Matsubayashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of searching similar document, system for performing the sam...
Patent number
7,200,587
Issue date
Apr 3, 2007
Hitachi, Ltd.
Tadataka Matsubayashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and system for storing and managing electronic mail
Patent number
7,080,099
Issue date
Jul 18, 2006
Hitachi, Ltd.
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and system for retrieving a document and computer readable s...
Patent number
7,054,860
Issue date
May 30, 2006
Hitachi, Ltd.
Yasuhiko Inaba
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Document retrieval method and document retrieval system
Patent number
7,047,238
Issue date
May 16, 2006
Hitachi, Ltd.
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Document retrieval method and document retrieval system
Patent number
7,039,636
Issue date
May 2, 2006
Hitachi, Ltd.
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and system for expanding document retrieval information
Patent number
7,010,519
Issue date
Mar 7, 2006
Hitachi, Ltd.
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Document retrieval method and system and computer readable storage...
Patent number
6,865,571
Issue date
Mar 8, 2005
Hitachi, Ltd.
Yasuhiko Inaba
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Registration method and search method for structured documents
Patent number
6,826,567
Issue date
Nov 30, 2004
Hitachi, Ltd.
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Text mining method and apparatus allowing a user to analyze content...
Patent number
6,757,676
Issue date
Jun 29, 2004
Hitachi, Ltd.
Natsuko Sugaya
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Data display method and apparatus for use in text mining
Patent number
6,738,786
Issue date
May 18, 2004
Hitachi, Ltd.
Natsuko Sugaya
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of and an apparatus for retrieving and delivering documents...
Patent number
6,665,667
Issue date
Dec 16, 2003
Hitachi, Ltd.
Yasuhiko Inaba
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Document retrieval method and system and computer readable storage...
Patent number
6,665,668
Issue date
Dec 16, 2003
Hitachi, Ltd.
Natsuko Sugaya
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of and an apparatus for retrieving and delivering documents...
Patent number
6,549,898
Issue date
Apr 15, 2003
Hitachi, Ltd.
Yasuhiko Inaba
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Document search method for registering documents, generating a stru...
Patent number
6,510,425
Issue date
Jan 21, 2003
Hitachi, Ltd.
Takuya Okamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and search method for structured documents
Patent number
6,496,820
Issue date
Dec 17, 2002
Hitachi, Ltd.
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Information registration method and document information processing...
Patent number
6,490,583
Issue date
Dec 3, 2002
Hitachi, Ltd.
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
METHOD AND SYSTEM FOR EXTRACTING CHARACTERISTIC STRING, METHOD AND...
Patent number
6,473,754
Issue date
Oct 29, 2002
Hitachi, Ltd.
Tadataka Matsubayashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Document search method and apparatus and portable medium used therefor
Patent number
6,377,946
Issue date
Apr 23, 2002
Hitachi Ltd.
Takuya Okamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Information registration method and document information processing...
Patent number
6,334,130
Issue date
Dec 25, 2001
Hitachi, Ltd.
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Information registration method and document information processing...
Patent number
6,178,422
Issue date
Jan 23, 2001
Hitachi, Ltd.
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Document management system integrating an environment for executing...
Patent number
5,887,171
Issue date
Mar 23, 1999
Hitachi, Ltd.
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Document searching method using forward and backward citation tables
Patent number
5,832,476
Issue date
Nov 3, 1998
Hitachi, Ltd.
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Document search method wherein stored documents and search queries...
Patent number
5,748,953
Issue date
May 5, 1998
Hitachi, Ltd.
Natsuko Mizutani
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Text search method and apparatus for structured documents
Patent number
5,745,745
Issue date
Apr 28, 1998
Hitachi, Ltd.
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Conference multimedia summary support system and method
Patent number
5,572,728
Issue date
Nov 5, 1996
Hitachi, Ltd.
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
File server system and file access control method of the same
Patent number
5,548,724
Issue date
Aug 20, 1996
Hitachi, Ltd.
Mitsuru Akizawa
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Apparatus for integrally controlling audio and video signals in rea...
Patent number
5,548,346
Issue date
Aug 20, 1996
Hitachi, Ltd.
Itaru Mimura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method for character string collation with filtering function and a...
Patent number
5,471,610
Issue date
Nov 28, 1995
Hitachi, Ltd.
Hisamitsu Kawaguchi
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
Information
Patent Application
GYPSUM-BASED LOAD-BEARING BOARD, LOAD-BEARING WALL STRUCTURE, AND L...
Publication number
20240200330
Publication date
Jun 20, 2024
YOSHINO GYPSUM CO., LTD.
Ushio SUDO
B32 - LAYERED PRODUCTS
Information
Patent Application
COMPOSITION FOR BUILDING MATERIAL, AND GYPSUM BOARD AND CONSTRUCTIO...
Publication number
20100043344
Publication date
Feb 25, 2010
Katsumi Tada
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
Method of and an apparatus for retrieving and delivering documents...
Publication number
20060218137
Publication date
Sep 28, 2006
Yasuhiko Inaba
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Document retrieval method and document retrieval system
Publication number
20040255218
Publication date
Dec 16, 2004
Hitachi, Ltd
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method and system for retrieving a document and computer readable s...
Publication number
20040068495
Publication date
Apr 8, 2004
Hitachi, Ltd.
Yasuhiko Inaba
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Document retrieval method and document retrieval system
Publication number
20030200211
Publication date
Oct 23, 2003
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Information delivering service system
Publication number
20030110091
Publication date
Jun 12, 2003
Yasuhiko Inaba
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Similar document retrieving method and system
Publication number
20030101177
Publication date
May 29, 2003
Tadataka Matsubayashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method of searching similar document, system for performing the sam...
Publication number
20030065658
Publication date
Apr 3, 2003
Tadataka Matsubayashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method and system for storing and managing electronic mail
Publication number
20030041112
Publication date
Feb 27, 2003
Hitachi, Ltd
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Profile management method for information filtering and profile man...
Publication number
20030009440
Publication date
Jan 9, 2003
Yasuhiko Inaba
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method of and an apparatus for retrieiving and delivering documents...
Publication number
20030004928
Publication date
Jan 2, 2003
Hitachi, Ltd.
Yasuhiko Inaba
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Registration method and search method for structured documents
Publication number
20020188604
Publication date
Dec 12, 2002
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method and system for expanding document retrieval information
Publication number
20020169763
Publication date
Nov 14, 2002
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Electromagnetic wave-shielding construction material and method for...
Publication number
20020164458
Publication date
Nov 7, 2002
Kazuhiro Suga
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Application
Data display method and apparatus for use in text mining
Publication number
20020116398
Publication date
Aug 22, 2002
Natsuko Sugaya
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Document retrieval method and system and computer readable storage...
Publication number
20020073065
Publication date
Jun 13, 2002
Yasuhiko Inaba
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
System and method for sending electronic mail and computer readable...
Publication number
20020059382
Publication date
May 16, 2002
Akihiko Yamaguchi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method and system for managing access right of E-mail information
Publication number
20020002589
Publication date
Jan 3, 2002
Tomomi Yonenaga
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Information registration method and document information processing...
Publication number
20010056421
Publication date
Dec 27, 2001
Hitachi, Ltd.
Katsumi Tada
G06 - COMPUTING CALCULATING COUNTING