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Masaaki Matsumoto
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Fujisawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Magnetic head heating element in a disk drive
Patent number
7,474,504
Issue date
Jan 6, 2009
Hitachi, Ltd.
Junguo Xu
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk apparatus and method of controlling the same
Patent number
7,209,309
Issue date
Apr 24, 2007
Hitachi Global Storage Technologies Japan, Ltd.
Masayuki Kurita
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk device and magnetic head slider
Patent number
7,164,556
Issue date
Jan 16, 2007
Hitachi Global Storage Technologies Japan, Ltd.
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head slider with side pads which each have a width W and a...
Patent number
7,085,103
Issue date
Aug 1, 2006
Hitachi Global Storage Technologies Japan, Ltd.
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head gimbal assembly and magnetic disk unit
Patent number
7,061,722
Issue date
Jun 13, 2006
Hitachi Global Storage Technologies Japan, Ltd.
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head slider and magnetic disc unit
Patent number
7,042,678
Issue date
May 9, 2006
Hitachi Global Storage Technologies Japan, Ltd.
Ryuji Tsuchiyama
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head slider, support therefor and magnetic disk unit
Patent number
7,038,883
Issue date
May 2, 2006
Hitachi Golbal Storage Technologies Japan, Ltd.
Ryuji Tsuchiyama
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head heating element in a disk drive
Patent number
6,963,464
Issue date
Nov 8, 2005
Hitachi Global Storage Technologies Japan, Ltd.
Junguo Xu
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk device and magnetic head slider
Patent number
6,934,123
Issue date
Aug 23, 2005
Hitachi, Ltd.
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head slider having optimized ratio of negative pressure be...
Patent number
6,842,309
Issue date
Jan 11, 2005
Hitachi, Ltd.
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk apparatus and method of controlling the same
Patent number
6,798,605
Issue date
Sep 28, 2004
Hitachi, Ltd.
Masayuki Kurita
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk device and magnetic head slider
Patent number
6,795,275
Issue date
Sep 21, 2004
Hitachi, Ltd.
Hidetoshi Anan
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disc apparatus with slider having specified location of ac...
Patent number
6,785,095
Issue date
Aug 31, 2004
Hitachi, Ltd.
Hiromitsu Tokisue
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head gimbal assembly and magnetic disk unit
Patent number
6,760,193
Issue date
Jul 6, 2004
Hitachi Global Storage Technologies Japan, Ltd.
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk device and magnetic head slider
Patent number
6,744,598
Issue date
Jun 1, 2004
Hitachi, Ltd.
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk device and magnetic head slider
Patent number
6,744,600
Issue date
Jun 1, 2004
Hitachi, Ltd.
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk drive having arm displacement limit mechanism for sho...
Patent number
6,741,427
Issue date
May 25, 2004
Hitachi Global Storage Technologies Japan, Ltd.
Akira Iida
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk drive with air bearing surface pad on movable portion...
Patent number
6,690,543
Issue date
Feb 10, 2004
Hitachi, Ltd.
Masayuki Kurita
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head slider
Patent number
6,657,820
Issue date
Dec 2, 2003
Hitachi, Ltd.
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head slider having optimized ratio of negative pressure re...
Patent number
6,628,480
Issue date
Sep 30, 2003
Hitachi, Ltd.
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head supporting apparatus having thermally insulated IC mo...
Patent number
6,618,225
Issue date
Sep 9, 2003
Hitachi Ltd.
Hayato Shimizu
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head slider
Patent number
6,597,536
Issue date
Jul 22, 2003
Hitachi, Ltd.
Ryuji Tsuchiyama
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk device and magnetic head slider
Patent number
6,556,381
Issue date
Apr 29, 2003
Hitachi, Ltd.
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head supporting apparatus having thermally insulated read/...
Patent number
6,498,702
Issue date
Dec 24, 2002
Hitachi, Ltd.
Hayato Shimizu
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disc apparatus having slider which reduces variation in li...
Patent number
6,493,188
Issue date
Dec 10, 2002
Hitachi, Ltd.
Hiromitsu Tokisue
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head gimbal assembly and magnetic disk unit
Patent number
6,493,179
Issue date
Dec 10, 2002
Hitachi, Ltd.
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head gimbal assembly and magnetic disk unit
Patent number
6,445,544
Issue date
Sep 3, 2002
Hitachi, Ltd.
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk drive having arm displacement limit mechanism for sho...
Patent number
6,373,666
Issue date
Apr 16, 2002
Hitachi, Ltd.
Akira Iida
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head gimbal assembly of a magnetic disk unit having a load...
Patent number
6,157,519
Issue date
Dec 5, 2000
Hitachi, Ltd.
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head suspension having selected thicknesses for enhancing...
Patent number
6,055,131
Issue date
Apr 25, 2000
Hitachi, Ltd.
Haruhide Takahashi
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
Magnetic disk apparatus and method of controlling the same
Publication number
20070070550
Publication date
Mar 29, 2007
Masayuki Kurita
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic head heating element in a disk drive
Publication number
20060039077
Publication date
Feb 23, 2006
Junguo Xu
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic disk device and magnetic head slider
Publication number
20050270697
Publication date
Dec 8, 2005
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic head slider and magnetic disk apparatus using the same
Publication number
20050099729
Publication date
May 12, 2005
Hitachi, Ltd.
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic disk apparatus and method of controlling the same
Publication number
20050013057
Publication date
Jan 20, 2005
Masayuki Kurita
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic disk device and magnetic head slider
Publication number
20040212930
Publication date
Oct 28, 2004
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic head slider and magnetic disc unit
Publication number
20040150914
Publication date
Aug 5, 2004
Ryuji Tsuchiyama
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic head slider and magnetic disk apparatus using the same
Publication number
20040037006
Publication date
Feb 26, 2004
Hitachi, Ltd.
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic head slider, support therefor and magnetic disk unit
Publication number
20030218832
Publication date
Nov 27, 2003
Ryuji Tsuchiyama
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic disk device and magnetic head slider
Publication number
20030197979
Publication date
Oct 23, 2003
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic disk device and magnetic head slider
Publication number
20030193750
Publication date
Oct 16, 2003
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic disk device and magnetic head slider
Publication number
20030133227
Publication date
Jul 17, 2003
Hidetoshi Anan
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic head supporting apparatus and disc apparatus
Publication number
20030053255
Publication date
Mar 20, 2003
Hayato Shimizu
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic head gimbal assembly and magnetic disk unit
Publication number
20030021059
Publication date
Jan 30, 2003
Hitachi, Ltd
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic head slider assembly and magnetic disk apparatus
Publication number
20030011933
Publication date
Jan 16, 2003
Ryuji Tsuchiyama
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic disc apparatus
Publication number
20020191339
Publication date
Dec 19, 2002
Hiromitsu Tokisue
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic head slider
Publication number
20020191341
Publication date
Dec 19, 2002
Hitachi, Ltd
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Application
MAGNETIC HEAD SLIDER HAVING OPTIMIZED RATION OF NEGATIVE PRESSURE R...
Publication number
20020135941
Publication date
Sep 26, 2002
HIDEKAZU KOHIRA
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic disk drive having arm displacement limit mechanism for sho...
Publication number
20020071220
Publication date
Jun 13, 2002
Hitachi, Ltd.
Akira Iida
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic disk drive
Publication number
20020057532
Publication date
May 16, 2002
Masayuki Kurita
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic disk apparatus and method of controlling the same
Publication number
20020054447
Publication date
May 9, 2002
Masayuki Kurita
G11 - INFORMATION STORAGE
Information
Patent Application
Manufacturing method and manufacturing apparatus for magnetic head...
Publication number
20020035778
Publication date
Mar 28, 2002
Kiyoshi Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Application
Manufacturing method and manufacturing apparatus for magnetic head...
Publication number
20020035777
Publication date
Mar 28, 2002
Kiyoshi Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic head gimbal assembly and magnetic disk unit
Publication number
20020024769
Publication date
Feb 28, 2002
Hitachi, Ltd
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic head gimbal assembly and magnetic disk unit
Publication number
20010048575
Publication date
Dec 6, 2001
Hitachi, Ltd
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic disk device and magnetic head slider
Publication number
20010030834
Publication date
Oct 18, 2001
Hidekazu Kohira
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic disk drive having arm displacement limit mechanism for sho...
Publication number
20010000681
Publication date
May 3, 2001
Hitachi, Ltd.
Akira Iida
G11 - INFORMATION STORAGE