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Yukie Hiratsuka
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Disk drive and method for controlling the disk drive
Patent number
8,117,489
Issue date
Feb 14, 2012
Hitachi Global Storage Technologies, Netherlands B.V.
Yukie Hiratsuka
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive and method of controlling cache memory therein
Patent number
7,624,228
Issue date
Nov 24, 2009
Hitachi Global Storage Technologies Netherlands B.V.
Yukie Hiratsuka
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Disk device and control method for cache
Patent number
7,539,820
Issue date
May 26, 2009
Hitachi Global Storage Technologies Netherlands B.V.
Yukie Hiratsuka
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Disk-type storage medium driving apparatus and disk-type storage me...
Patent number
7,535,666
Issue date
May 19, 2009
Hitachi, Ltd.
Yukie Hiratsuka
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive having real time performance improvement
Patent number
7,487,290
Issue date
Feb 3, 2009
Hitachi Global Storage Technologies Netherlands B.V.
Yukie Hiratsuka
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Disk drive and method for performing realtime processing and non-re...
Patent number
7,461,219
Issue date
Dec 2, 2008
Hitachi Global Storage Technologies Netherlands B.V.
Yukie Hiratsuka
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Disk drive that controls heater current according to rotational speed
Patent number
7,457,073
Issue date
Nov 25, 2008
Hitachi Global Storage Technologies Netherlands B.V.
Masayuki Kurita
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
INFORMATION DEVICE EQUIPPED WITH CACHE MEMORIES, APPARATUS AND PROG...
Publication number
20150113212
Publication date
Apr 23, 2015
Hitachi, Ltd
Yukie HIRATSUKA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
INFORMATION DEVICE EQUIPPED WITH CACHE MEMORIES, APPARATUS AND PROG...
Publication number
20120054421
Publication date
Mar 1, 2012
Hitachi, Ltd
Yukie HIRATSUKA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
DISK DRIVE AND METHOD FOR CONTROLLING THE DISK DRIVE
Publication number
20090307525
Publication date
Dec 10, 2009
Yukie Hiratsuka
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Disk-Type Storage Medium Driving Apparatus and Disk-Type Storage Me...
Publication number
20080024903
Publication date
Jan 31, 2008
Yukie Hiratsuka
G11 - INFORMATION STORAGE
Information
Patent Application
Disk unit and reading ahead control method for rotation type storag...
Publication number
20070276993
Publication date
Nov 29, 2007
Hitachi Global Storage Techologies Netherlands B. V.
Yukie Hiratsuka
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Disk drive
Publication number
20070188908
Publication date
Aug 16, 2007
Hitachi Global Storage Technologies Netherlands B.V.
Masayuki Kurita
G11 - INFORMATION STORAGE
Information
Patent Application
Disk drive and method of controlling cache memory therein
Publication number
20070005884
Publication date
Jan 4, 2007
Hitachi Global Storage Technologies Netherlands B.V.
Yukie Hiratsuka
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Disk drive having real time performance improvement
Publication number
20060015682
Publication date
Jan 19, 2006
Hitachi Global Storage Technologies Netherlands B.V.
Yukie Hiratsuka
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Disk drive and method for performing real time processing and non-r...
Publication number
20050248871
Publication date
Nov 10, 2005
Hitachi Global Storage Technologies Netherlands B.V.
Yukie Hiratsuka
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Disk device and control method for cache
Publication number
20050235108
Publication date
Oct 20, 2005
Hitachi Global Storage Technologies
Yukie Hiratsuka
G06 - COMPUTING CALCULATING COUNTING