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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical disc for tuple-speed recording and optical disc device for...
Patent number
8,391,113
Issue date
Mar 5, 2013
Sanyo Electric Co., LTD
Morio Nakatani
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Information
Patent Grant
Optical disk, optical disk recording method, and optical disk recor...
Patent number
7,643,394
Issue date
Jan 5, 2010
Kabushiki Kaisha Toshiba
Yutaka Kashihara
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical disk, optical disk drive and method of playing back an opti...
Patent number
7,551,533
Issue date
Jun 23, 2009
Kabushiki Kaisha Toshiba
Yutaka Kashihara
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical disc recording method and apparatus
Patent number
7,492,697
Issue date
Feb 17, 2009
Sanyo Electric Co., LTD
Tsuyoshi Yamamoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical disc medium having extended record control data areas, opti...
Patent number
7,471,617
Issue date
Dec 30, 2008
NEC Corporation
Yutaka Yamanaka
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Information
Patent Grant
Recording/reproducing method and recording/reproducing apparatus an...
Patent number
7,471,602
Issue date
Dec 30, 2008
Kabushiki Kaisha Toshiba
Akihito Ogawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical disc medium having a system information recording area of l...
Patent number
7,355,957
Issue date
Apr 8, 2008
NEC Corporation
Yutaka Yamanaka
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Information
Patent Grant
Optical information recording medium
Patent number
6,875,488
Issue date
Apr 5, 2005
NEC Corporation
Tatsunori Ide
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Optical storage medium with improved substrate structure to provide...
Patent number
6,646,978
Issue date
Nov 11, 2003
NEC Corporation
Shuichi Okubo
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Information
Patent Grant
Optical data recording apparatus producing a laser beam having a di...
Patent number
5,982,739
Issue date
Nov 9, 1999
NEC Corporation
Tatsunori Ide
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Information
Patent Grant
Optical information recording medium
Patent number
5,631,895
Issue date
May 20, 1997
NEC Corporation
Mitsuya Okada
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Information
Patent Grant
Re-writable phase change type optical disk with suppressed recordin...
Patent number
5,521,901
Issue date
May 28, 1996
NEC Corporation
Mitsuya Okada
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Information
Patent Grant
Optical information-recording medium
Patent number
5,506,022
Issue date
Apr 9, 1996
NEC Corporation
Tatsunori Ide
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Information
Patent Grant
Information recording medium
Patent number
5,492,794
Issue date
Feb 20, 1996
NEC Corporation
Yoshitaka Kawanishi
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Information
Patent Grant
Method for recording, erasing and reproducing data on an optical da...
Patent number
5,342,714
Issue date
Aug 30, 1994
NEC Corporation
Tatsunori Ide
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Patents Applications
last 30 patents
Information
Patent Application
OPTICAL DISC AND OPTICAL DISC DEVICE
Publication number
20090207721
Publication date
Aug 20, 2009
SANYO ELECTRIC CO., LTD.
Morio Nakatani
G11 - INFORMATION STORAGE
Information
Patent Application
Optical disk, optical disk drive and method of playing back an opti...
Publication number
20060182428
Publication date
Aug 17, 2006
Yutaka Kashihara
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Information
Patent Application
Optical disk, optical disk recording method, and optical disk recor...
Publication number
20050276191
Publication date
Dec 15, 2005
Yutaka Kashihara
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Information
Patent Application
Optical disc recording method and apparatus
Publication number
20050270966
Publication date
Dec 8, 2005
Sanyo Electric Co., Ltd.
Tsuyoshi Yamamoto
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Information
Patent Application
Recording/reproducing method and recording/reproducing apparatus an...
Publication number
20050254412
Publication date
Nov 17, 2005
Akihito Ogawa
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Information
Patent Application
Optical disc medium, optical disc apparatus using the same, and dat...
Publication number
20050237874
Publication date
Oct 27, 2005
NEC Corporation
Yutaka Yamanaka
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Information
Patent Application
Optical disc medium, optical disc apparatus using the same, and dat...
Publication number
20050237875
Publication date
Oct 27, 2005
NEC Corporation
Yutaka Yamanaka
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Information
Patent Application
Optical disc medium having a system information recording area of l...
Publication number
20040257955
Publication date
Dec 23, 2004
Yutaka Yamanaka
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Information
Patent Application
Optical information recording medium
Publication number
20030190449
Publication date
Oct 9, 2003
NEC Corporation
Tatsunori Ide
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Optical storage medium with improved substrate structure
Publication number
20020034153
Publication date
Mar 21, 2002
NEC Corporation
Shuichi Okubo
G11 - INFORMATION STORAGE