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Yuichi SHIGEMATSU
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Kyoto, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Rotary drive apparatus
Patent number
10,591,716
Issue date
Mar 17, 2020
Nidec Corporation
Yoichi Sekii
G02 - OPTICS
Information
Patent Grant
Fluid bearing apparatus including dynamic pressure grooves with str...
Patent number
9,422,974
Issue date
Aug 23, 2016
Nidec Corporation
Kazuyoshi Saito
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Spindle motor and disk drive apparatus
Patent number
8,687,317
Issue date
Apr 1, 2014
Nidec Corporation
Takunori Shinao
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Fluid dynamic pressure bearing device, spindle motor and disk drive...
Patent number
8,284,513
Issue date
Oct 9, 2012
Nidec Corporation
Yoichi Sekii
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Fluid dynamic pressure bearing device, spindle motor and disk drive...
Patent number
8,284,515
Issue date
Oct 9, 2012
Nidec Corporation
Yoichi Sekii
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
Information
Patent Application
ROTARY DRIVE APPARATUS
Publication number
20180348504
Publication date
Dec 6, 2018
NIDEC CORPORATION
Yoichi SEKII
G02 - OPTICS
Information
Patent Application
FLUID BEARING APPARATUS, SPINDLE MOTOR, AND DISK DRIVE APPARATUS
Publication number
20160153490
Publication date
Jun 2, 2016
NIDEC CORPORATION
Kazuyoshi SAITO
G11 - INFORMATION STORAGE
Information
Patent Application
SPINDLE MOTOR AND DISK DRIVE APPARATUS
Publication number
20140085749
Publication date
Mar 27, 2014
NIDEC CORPORATION
Takunori SHINAO
G11 - INFORMATION STORAGE
Information
Patent Application
FLUID DYNAMIC PRESSURE BEARING DEVICE, SPINDLE MOTOR AND DISK DRIVE...
Publication number
20110299193
Publication date
Dec 8, 2011
NIDEC CORPORATION
Yoichi SEKII
G11 - INFORMATION STORAGE
Information
Patent Application
FLUID DYNAMIC PRESSURE BEARING DEVICE, SPINDLE MOTOR AND DISK DRIVE...
Publication number
20100195250
Publication date
Aug 5, 2010
NIDEC CORPORATION
Yoichi SEKII
G11 - INFORMATION STORAGE