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Mitsuo Ooyama
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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
Hard disk drive and hard disk apparatus having bus and its installi...
Patent number
6,043,988
Issue date
Mar 28, 2000
Hitachi, Ltd.
Hiroki Kanai
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Hard disk drive and hard disk apparatus having bus and its installi...
Patent number
5,903,442
Issue date
May 11, 1999
Hitachi, Ltd.
Hiroki Kanai
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
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
Electron beam lithography system
Patent number
4,943,729
Issue date
Jul 24, 1990
Hitachi, Ltd.
Kimiaki Ando
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Charged particle beam lithography system
Patent number
4,829,444
Issue date
May 9, 1989
Hitachi, Ltd.
Norio Saitou
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Lithography apparatus
Patent number
4,820,928
Issue date
Apr 11, 1989
Hitachi, Ltd.
Mitsuo Ooyama
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Apparatus for processing floating-point data having exponents of a...
Patent number
4,758,973
Issue date
Jul 19, 1988
Hitachi, Ltd.
Mitsuo Ooyama
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Electron beam lithography apparatus
Patent number
4,692,579
Issue date
Sep 8, 1987
Hitachi, Ltd.
Norio Saitou
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Filled shaped generating apparatus
Patent number
4,626,838
Issue date
Dec 2, 1986
Hitachi, Ltd.
Shigeo Tsujioka
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Graphic display apparatus with a vector generating circuit
Patent number
4,580,236
Issue date
Apr 1, 1986
Hitachi, Ltd.
Shigeo Tsujioka
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS