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Toru Kumagai
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Chiba-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Oil injecting apparatus
Patent number
7,191,806
Issue date
Mar 20, 2007
Seiko Instruments Inc.
Ryoji Yoneyama
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Hydraulic bearing motor
Patent number
6,575,633
Issue date
Jun 10, 2003
Seiko Instruments Inc.
Hiromitsu Goto
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Hydraulic dynamic pressure bearing motor
Patent number
6,552,456
Issue date
Apr 22, 2003
Seiko Instruments Inc.
Hiromitsu Goto
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disc drive device
Patent number
5,633,769
Issue date
May 27, 1997
Kabushiki Kaisha Sankyo Seiki Seisakusho
Shinji Kinoshita
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Spindle motor
Patent number
5,572,078
Issue date
Nov 5, 1996
Sankyo Seiki Mfg. Co., Ltd.
Masayoshi Saichi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Magnetic disk drive device having lead wire holding structure
Patent number
5,572,384
Issue date
Nov 5, 1996
Kabushiki Kaisha Sankyo Seiki Seisakusho
Toru Kumagai
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
Oil injecting apparatus
Publication number
20050173196
Publication date
Aug 11, 2005
Ryoji Yoneyama
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Spindle motor
Publication number
20020096962
Publication date
Jul 25, 2002
Ryoji Yoneyama
G11 - INFORMATION STORAGE
Information
Patent Application
Hydraulic dynamic pressure bearing motor
Publication number
20020093261
Publication date
Jul 18, 2002
Hiromitsu Goto
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Hydraulic bearing motor
Publication number
20020081045
Publication date
Jun 27, 2002
Hiromitsu Goto
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...