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Shinobu Yoshida
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Ibaragi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Spindle motor and magnetic disc device using thereof having radial...
Patent number
6,771,460
Issue date
Aug 3, 2004
Hitachi, Ltd.
Katsutoshi Nii
G11 - INFORMATION STORAGE
Information
Patent Grant
Spindle motor and magnetic disc device with hydrodynamic bearings
Patent number
6,680,814
Issue date
Jan 20, 2004
Hitachi, Ltd.
Katsutoshi Nii
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive device
Patent number
6,510,122
Issue date
Jan 21, 2003
Hitachi, Ltd.
Yoshiaki Yamauchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Spindle motor and magnetic disc device with hydrodynamic bearing
Patent number
6,469,866
Issue date
Oct 22, 2002
Hitachi, Ltd.
Katsutoshi Nii
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Magnetic disk apparatus
Patent number
6,462,910
Issue date
Oct 8, 2002
Hitachi, Ltd.
Toshihiko Shimizu
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk type reproducing apparatus and revolution control method
Patent number
6,459,668
Issue date
Oct 1, 2002
Hitachi, Ltd.
Yoshihiro Satou
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic slider head and method of producing the same
Patent number
6,373,659
Issue date
Apr 16, 2002
Hitachi, Ltd.
Tetsuya Hamaguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk apparatus and motor therefor
Patent number
6,256,288
Issue date
Jul 3, 2001
Hitachi, Ltd.
Yoshiaki Yamauchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Disc device having disc in balance correcting arrangements
Patent number
6,198,715
Issue date
Mar 6, 2001
Hitachi, Ltd.
Takashi Kouno
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Magnetic head slider and method of production thereof
Patent number
6,122,148
Issue date
Sep 19, 2000
Hitachi, Ltd.
Tetsuya Hamaguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Bearing assembly having compact thickness, spindle motor and actuat...
Patent number
6,115,213
Issue date
Sep 5, 2000
Hitachi, Ltd.
Hiroshi Ikeda
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Magnetic disk unit having anti-impact arrangement
Patent number
6,052,255
Issue date
Apr 18, 2000
Hitachi, Ltd.
Yoshiko Kawabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Rotating disk type information storage apparatus having a movable m...
Patent number
6,038,104
Issue date
Mar 14, 2000
Hitachi, Ltd.
Kazutaka Sato
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk apparatus
Patent number
5,999,369
Issue date
Dec 7, 1999
Hitachi, Ltd.
Toshihiko Shimizu
G11 - INFORMATION STORAGE
Information
Patent Grant
Head locating actuator having reduced susceptibility to dynamic rea...
Patent number
5,615,068
Issue date
Mar 25, 1997
Hitachi, Ltd.
Yasuhiro Matsuda
G11 - INFORMATION STORAGE
Information
Patent Grant
Guide arm with a fixed printed circuit board for magnetic disk drive
Patent number
5,245,489
Issue date
Sep 14, 1993
Hitachi, Ltd.
Hideyuki Kimura
G11 - INFORMATION STORAGE
Information
Patent Grant
Guide arm with affixed printed circuit board for magnetic disk drive
Patent number
5,140,482
Issue date
Aug 18, 1992
Hitachi, Ltd.
Hideyuki Kimura
G11 - INFORMATION STORAGE
Information
Patent Grant
Page turning apparatus
Patent number
4,870,258
Issue date
Sep 26, 1989
Hitachi, Ltd.
Akira Mochizuki
B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information
Patent Grant
Carriage support structure
Patent number
4,752,849
Issue date
Jun 21, 1988
Hitachi, Ltd.
Shinobu Yoshida
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
Information
Patent Application
Spindle motor and magnetic disc device using thereof
Publication number
20030011929
Publication date
Jan 16, 2003
Katsutoshi Nii
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Spindle motor and magnetic disc device using thereof
Publication number
20020196582
Publication date
Dec 26, 2002
Katsutoshi Nii
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...