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Mitsuru Akizawa
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Tokyo, JP
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last 30 patents
Information
Patent Grant
Presearch type document search method and apparatus
Patent number
6,094,647
Issue date
Jul 25, 2000
Hitachi, Ltd.
Kanji Kato
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Document retrieval method and system
Patent number
5,757,983
Issue date
May 26, 1998
Hitachi, Ltd.
Hisamitsu Kawaguchi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
High speed file access control method and computer system including...
Patent number
5,603,003
Issue date
Feb 11, 1997
Hitachi, Ltd.
Mitsuru Akizawa
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
Hierarchical presearch type text search method and apparatus and ma...
Patent number
5,519,857
Issue date
May 21, 1996
Hitachi, Ltd.
Kanji Kato
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
System for parallel string search with a function-directed parallel...
Patent number
5,497,488
Issue date
Mar 5, 1996
Hitachi, Ltd.
Mitsuru Akizawa
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
System for plural-string search with a parallel collation of a firs...
Patent number
5,452,451
Issue date
Sep 19, 1995
Hitachi, Ltd.
Mitsuru Akizawa
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Semiconductor memory device with data error compensation
Patent number
5,398,206
Issue date
Mar 14, 1995
Hitachi, Ltd.
Mitsuru Akizawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Hierarchical presearch type text search method and apparatus and ma...
Patent number
5,168,533
Issue date
Dec 1, 1992
Hitachi, Ltd.
Kanji Kato
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Range-conditional character string retrieving method and system
Patent number
5,138,669
Issue date
Aug 11, 1992
Hitachi, Ltd.
Takanori Shimura
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Integrated microprocessor with associative memory device
Patent number
5,101,376
Issue date
Mar 31, 1992
Hitachi, Ltd.
Kouki Noguchi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Associative memory device
Patent number
5,036,486
Issue date
Jul 30, 1991
Hitachi, Ltd.
Kouki Noguchi
G06 - COMPUTING CALCULATING COUNTING