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Tetsuya Maruyama
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Kyoto, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Fluid dynamic bearing apparatus, spindle motor, and disk drive appa...
Patent number
8,922,943
Issue date
Dec 30, 2014
Nidec Corporation
Hiroki Yamada
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Fluid dynamic bearing apparatus with specific minute gap structure...
Patent number
8,743,505
Issue date
Jun 3, 2014
Nidec Corporation
Hiroki Yamada
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Fluid dynamic bearing apparatus arranged to discharge air bubbles g...
Patent number
8,472,132
Issue date
Jun 25, 2013
Nidec Corporation
Hiroki Yamada
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Dynamic fluid pressure bearing, spindle motor, disk drive apparatus...
Patent number
8,215,842
Issue date
Jul 10, 2012
Nidec Corporation
Tetsuya Maruyama
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Fluid dynamic bearing mechanism including communicating channel, sp...
Patent number
8,169,738
Issue date
May 1, 2012
Nidec Corporation
Atsushi Yawata
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
Information
Patent Application
APPARATUS INCLUDING CAPILLARY AND LABYRINTH SEALS
Publication number
20140286600
Publication date
Sep 25, 2014
Hiroki YAMADA
G11 - INFORMATION STORAGE
Information
Patent Application
FLUID DYNAMIC BEARING APPARATUS, SPINDLE MOTOR, AND DISK DRIVE APPA...
Publication number
20130243356
Publication date
Sep 19, 2013
SEAGATE TECHNOLOGY LLC
Hiroki YAMADA
G11 - INFORMATION STORAGE
Information
Patent Application
FLUID DYNAMIC BEARING MECHANISM INCLUDING COMMUNICATING CHANNEL, SP...
Publication number
20120092788
Publication date
Apr 19, 2012
NIDEC CORPORATION
Atsushi YAWATA
G11 - INFORMATION STORAGE
Information
Patent Application
FLUID DYNAMIC BEARING APPARATUS, SPINDLE MOTOR, AND DISK DRIVE APPA...
Publication number
20120063030
Publication date
Mar 15, 2012
NIDEC CORPORATION
Hiroki YAMADA
G11 - INFORMATION STORAGE
Information
Patent Application
FLUID DYNAMIC BEARING APPARATUS, SPINDLE MOTOR, AND DISK DRIVE APPA...
Publication number
20110019303
Publication date
Jan 27, 2011
NIDEC CORPORATION
Hiroki Yamada
G11 - INFORMATION STORAGE
Information
Patent Application
FLUID DYNAMIC BEARING APPARATUS, SPINDLE MOTOR, AND DISK DRIVE APPA...
Publication number
20100296190
Publication date
Nov 25, 2010
NIDEC CORPORATION
Hiroki Yamada
G11 - INFORMATION STORAGE
Information
Patent Application
DYNAMIC FLUID PRESSURE BEARING, SPINDLE MOTOR, DISK DRIVE APPARATUS...
Publication number
20090196540
Publication date
Aug 6, 2009
NIDEC CORPORATION
Tetsuya MARUYAMA
G11 - INFORMATION STORAGE