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Yuzuru Simazaki
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Hitachi, JP
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last 30 patents
Information
Patent Grant
Image formation method and image formation apparatus
Patent number
5,745,818
Issue date
Apr 28, 1998
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Magnetic brush with bristle height equal to developing gap
Patent number
5,430,528
Issue date
Jul 4, 1995
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image recording method including determining a gap between a photos...
Patent number
5,315,353
Issue date
May 24, 1994
Hitachi, Ltd.
Yuzuru Simazaki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic recording apparatus having a plurality of devel...
Patent number
5,307,147
Issue date
Apr 26, 1994
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Corona deterioration and moisture compensation for transfer unit in...
Patent number
5,291,253
Issue date
Mar 1, 1994
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Multi-color electrophotograph apparatus
Patent number
5,008,691
Issue date
Apr 16, 1991
Hitachi, Ltd.
Takao Kumasaka
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Electrophotographic image transfer member, electrophotographic imag...
Patent number
4,998,143
Issue date
Mar 5, 1991
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic recording apparatus
Patent number
4,952,951
Issue date
Aug 28, 1990
Hitachi, Ltd.
Takao Kumasaka
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Developing device and multi-color recording apparatus
Patent number
4,947,200
Issue date
Aug 7, 1990
Hitachi, Ltd.
Takao Kumasaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Time-sharing drive liquid crystal optical switch array and optical...
Patent number
4,783,149
Issue date
Nov 8, 1988
Hitachi, Ltd.
Takao Umeda
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Multiplexed driving method for an optical switching element employi...
Patent number
4,746,196
Issue date
May 24, 1988
Hitachi, Ltd.
Takao Umeda
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Liquid crystal display device
Patent number
4,505,546
Issue date
Mar 19, 1985
Hitachi, Ltd.
Takao Umeda
G02 - OPTICS
Information
Patent Grant
Liquid crystal display element with gap controlling material and pr...
Patent number
4,362,771
Issue date
Dec 7, 1982
Hitachi, Ltd.
Takao Umeda
G02 - OPTICS
Information
Patent Grant
Stator structure for induction motor
Patent number
4,217,514
Issue date
Aug 12, 1980
Hitachi, Ltd.
Yuzuru Simazaki
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER