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Takayuki Ichihara
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Thermal energy assisted medium
Patent number
9,099,140
Issue date
Aug 4, 2015
HGST Netherlands B.V.
Hiroyuki Suzuki
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording with tilted media in the cross track direction
Patent number
8,976,484
Issue date
Mar 10, 2015
HGST Netherlands B.V.
Kyo Akagi
G11 - INFORMATION STORAGE
Information
Patent Grant
Method for manufacturing perpendicular magnetic recording medium
Patent number
8,795,478
Issue date
Aug 5, 2014
HGST Netherlands B.V.
Yoshinori Honda
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Magnetic head and magnetic disk drive to be used for shingled recor...
Patent number
8,462,468
Issue date
Jun 11, 2013
Hitachi, Ltd.
Hiroyuki Katada
G11 - INFORMATION STORAGE
Information
Patent Grant
Thermally assisted recording media and system
Patent number
8,089,829
Issue date
Jan 3, 2012
Hitachi, Ltd.
Fumiko Akagi
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Perpendicular magnetic recording medium, method of manufacturing th...
Patent number
7,923,134
Issue date
Apr 12, 2011
Hitachi Global Storage Technologies Netherlands B.V.
Takayuki Ichihara
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Perpendicular magnetic recording media and magnetic storage apparat...
Patent number
7,892,663
Issue date
Feb 22, 2011
Hitachi Global Storage Technologies Netherlands B.V.
Hiroyuki Nakagawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Manufacturing of magnetic recording medium
Patent number
7,645,363
Issue date
Jan 12, 2010
Hitachi Global Storage Technologies Netherlands B.V.
Takayuki Ichihara
G11 - INFORMATION STORAGE
Information
Patent Grant
Manufacturing process for perpendicular magnetic recording medium
Patent number
7,641,774
Issue date
Jan 5, 2010
Hitachi Global Storage Technologies Netherlands B.V.
Yoshinori Honda
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Perpendicular magnetic recording medium and method of manufacturing it
Patent number
7,625,646
Issue date
Dec 1, 2009
Hitachi Global Storage Technologies Japan, Ltd.
Yoshiyuki Hirayama
G11 - INFORMATION STORAGE
Information
Patent Grant
Perpendicular magnetic recording medium and manufacturing of the same
Patent number
7,625,644
Issue date
Dec 1, 2009
Hitachi Global Storage Technologies Netherlands B.V.
Takayuki Ichihara
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Magnetic recording medium containing first and second recording lay...
Patent number
7,556,871
Issue date
Jul 7, 2009
Hitachi Global Storage Technologies Netherlands B.V.
Takayuki Ichihara
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic hard disk drive
Patent number
7,184,236
Issue date
Feb 27, 2007
Hitachi Global Storage Technologies Japan, Ltd.
Takehiko Hamaguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Perpendicular magnetic recording medium and method of manufacturing it
Patent number
7,033,686
Issue date
Apr 25, 2006
Hitachi Global Storage Technologies Japan, Ltd.
Yoshiyuki Hirayama
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording apparatus and method of writing data at low temp...
Patent number
7,031,091
Issue date
Apr 18, 2006
Hitachi, Ltd.
Takayuki Ichihara
G11 - INFORMATION STORAGE
Information
Patent Grant
Apparatus and method for recording information
Patent number
6,952,380
Issue date
Oct 4, 2005
Hitachi, Ltd.
Fumio Isshiki
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic hard disk drive
Patent number
6,822,818
Issue date
Nov 23, 2004
Hitachi, Ltd.
Takehiko Hamaguchi
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
MAGNETIC HEAD AND MAGNETIC DISK DRIVE TO BE USED FOR SHINGLED RECOR...
Publication number
20110292545
Publication date
Dec 1, 2011
Hitachi, Ltd.
Hiroyuki Katada
G11 - INFORMATION STORAGE
Information
Patent Application
Thermal Energy Assisted Medium
Publication number
20100165500
Publication date
Jul 1, 2010
Hiroyuki Suzuki
G11 - INFORMATION STORAGE
Information
Patent Application
THERMALLY ASSISTED RECORDING MEDIA AND SYSTEM
Publication number
20100110576
Publication date
May 6, 2010
Hitachi, Ltd.
Fumiko AKAGI
G11 - INFORMATION STORAGE
Information
Patent Application
Perpendicular magnetic recording medium, method of manufacturing th...
Publication number
20090086372
Publication date
Apr 2, 2009
Takayuki Ichihara
G11 - INFORMATION STORAGE
Information
Patent Application
Perpendicular magnetic recording media and magnetic storage apparat...
Publication number
20090052074
Publication date
Feb 26, 2009
Hitachi Global Storage Technologies Netherlands B.V.
Hiroyuki Nakagawa
G11 - INFORMATION STORAGE
Information
Patent Application
Manufacturing of magnetic recording medium
Publication number
20060249371
Publication date
Nov 9, 2006
Hitachi Global Storage Technologies Netherlands B.V.
Takayuki Ichihara
G11 - INFORMATION STORAGE
Information
Patent Application
Perpendicular magnetic recording medium and method of manufacturing it
Publication number
20060134467
Publication date
Jun 22, 2006
Yoshiyuki Hirayama
G11 - INFORMATION STORAGE
Information
Patent Application
Manufacturing process for perpendicular magnetic recording medium
Publication number
20060090998
Publication date
May 4, 2006
Hitachi Global Storage Technologies Netherlands B.V.
Yoshinori Honda
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Method for manufacturing perpendicular magnetic recording medium
Publication number
20060086606
Publication date
Apr 27, 2006
Hitachi Global Storage Technologies Netherlands B.V.
Yoshinori Honda
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Perpendicular magnetic recording medium and manufacturing of the same
Publication number
20060088736
Publication date
Apr 27, 2006
Hitachi Global Storage Technologies Netherlands B.V.
Takayuki Ichihara
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Magnetic recording medium and magnetic recording apparatus
Publication number
20050227120
Publication date
Oct 13, 2005
Hitachi Global Storage Technologies Netherlands B.V.
Takayuki Ichihara
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic hard disk drive
Publication number
20050036226
Publication date
Feb 17, 2005
Hitachi, Ltd.
Takehiko Hamaguchi
G11 - INFORMATION STORAGE
Information
Patent Application
perpendicular magnetic recording medium and method of manufacturing it
Publication number
20040191571
Publication date
Sep 30, 2004
Yoshiyuki Hirayama
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic recording apparatus and method of writing data
Publication number
20040080848
Publication date
Apr 29, 2004
Takayuki Ichihara
G11 - INFORMATION STORAGE
Information
Patent Application
Apparatus and method for recording information
Publication number
20030043699
Publication date
Mar 6, 2003
Hitachi, Ltd.
Fumio Isshiki
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic hard disk drive
Publication number
20020060871
Publication date
May 23, 2002
Hitachi, Ltd.
Takehiko Hamaguchi
G11 - INFORMATION STORAGE