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Kazusuke Yamanaka
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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Magnetic recording medium and magnetic recording and reproducing ap...
Patent number
7,157,162
Issue date
Jan 2, 2007
Hitachi Global Storage Technologies Japan, Ltd.
Kazusuke Yamanaka
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording medium possessing a fluctuation field of not les...
Patent number
6,846,577
Issue date
Jan 25, 2005
Hitachi, Ltd.
Kazusuke Yamanaka
G11 - INFORMATION STORAGE
Information
Patent Grant
Longitudinal magnetic recording media
Patent number
6,706,426
Issue date
Mar 16, 2004
Hitachi, Ltd.
Tomoo Yamamoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording medium and magnetic recording and reproducing ap...
Patent number
6,613,428
Issue date
Sep 2, 2003
Hitachi, Ltd.
Kazusuke Yamanaka
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording medium and magnetic recording apparatus
Patent number
6,572,988
Issue date
Jun 3, 2003
Hitachi, Ltd.
Nobuyuki Inaba
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic thin film magnetic recording medium
Patent number
6,310,748
Issue date
Oct 30, 2001
Hitachi, Ltd.
Kazusuke Yamanaka
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording system and magnetic recording medium used therefor
Patent number
6,177,208
Issue date
Jan 23, 2001
Hitachi, Ltd.
Tomoo Yamamoto
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Perpendicular magnetic recording media and magnetic recording and r...
Patent number
6,083,599
Issue date
Jul 4, 2000
Hitachi, Ltd.
Yoshiyuki Hirayama
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording system and magnetic recording medium used therefor
Patent number
5,919,581
Issue date
Jul 6, 1999
Hitachi, Ltd.
Tomoo Yamamoto
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Magnetic recording medium
Patent number
5,686,177
Issue date
Nov 11, 1997
Hitachi, Ltd.
Kazusuke Yamanaka
G11 - INFORMATION STORAGE
Information
Patent Grant
Electrochromic display device
Patent number
4,773,740
Issue date
Sep 27, 1988
Hitachi Maxell, Ltd.
Akira Kawakami
G02 - OPTICS
Information
Patent Grant
Electrochromic display element
Patent number
4,411,497
Issue date
Oct 25, 1983
Hitachi, Ltd.
Kazusuke Yamanaka
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
Magnetic recording medium and magnetic recording and reproducing ap...
Publication number
20050123806
Publication date
Jun 9, 2005
Kazusuke Yamanaka
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic recording medium and magnetic recording and reproducing ap...
Publication number
20030170497
Publication date
Sep 11, 2003
Kazusuke Yamanaka
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic recording medium and magnetic recording and reproducing ap...
Publication number
20010021465
Publication date
Sep 13, 2001
Kazusuke Yamanaka
G11 - INFORMATION STORAGE