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Takeshi Nakajima
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Hitachi, JP
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last 30 patents
Information
Patent Grant
Polygon mirror motor and polygon mirror supporting structure
Patent number
6,118,568
Issue date
Sep 12, 2000
Hitachi, Ltd.
Iko Fukasawa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Polygon mirror motor and polygon mirror supporting structure
Patent number
5,883,455
Issue date
Mar 16, 1999
Hitachi, Ltd.
Iko Fukasawa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Motor, a printer having such a motor and a disk drive system having...
Patent number
5,574,322
Issue date
Nov 12, 1996
Hitachi, Ltd.
Katsutoshi Nii
G02 - OPTICS
Information
Patent Grant
Rotary body bearing apparatus, motor and polygon mirror motor
Patent number
5,541,462
Issue date
Jul 30, 1996
Hitachi, Ltd.
Katsutoshi Nii
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Motor with a bearing lubricated by magnetic fluid
Patent number
5,469,008
Issue date
Nov 21, 1995
Hitachi, Ltd.
Takeshi Nakajima
G06 - COMPUTING CALCULATING COUNTING