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Takakiyo YASUKAWA
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Multilayered optical disk and its recording method
Patent number
9,286,929
Issue date
Mar 15, 2016
Hitachi Consumer Electronics Co., Ltd.
Harukazu Miyamoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical disc inspection method in optical disc library apparatus an...
Patent number
9,105,274
Issue date
Aug 11, 2015
Hitachi-LG Data Storage, Inc.
Takakiyo Yasukawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Recording/reproducing device and optical disk library device
Patent number
8,908,484
Issue date
Dec 9, 2014
Hitachi-LG Data Storage, Inc.
Tomomi Okamoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical disc and optical disc apparatus
Patent number
8,493,827
Issue date
Jul 23, 2013
Hitachi-LG Data Storage, Inc.
Shinji Fujita
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical disc apparatus, information recording method, and optical disc
Patent number
8,472,297
Issue date
Jun 25, 2013
Hitachi-LG Data Storage, Inc.
Takakiyo Yasukawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical disc drive for recording or reproducing data on a multilaye...
Patent number
8,335,140
Issue date
Dec 18, 2012
Hitachi-LG Data Storage, Inc.
Manabu Shiozawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical disc reproducing apparatus for implementing an optical reco...
Patent number
8,289,822
Issue date
Oct 16, 2012
Hitachi-LG Data Storage, Inc.
Takeyoshi Kataoka
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical disk recording apparatus
Patent number
8,284,648
Issue date
Oct 9, 2012
Hitachi, Ltd.
Koichiro Nishimura
G11 - INFORMATION STORAGE
Information
Patent Grant
Recording and reproducing method and recording and reproducing appa...
Patent number
8,004,957
Issue date
Aug 23, 2011
Hitachi, Ltd.
Takakiyo Yasukawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical disc apparatus and data recording method thereof
Patent number
7,944,790
Issue date
May 17, 2011
Hitachi-LG Data Storage, Inc.
Yasuhiro Wada
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of recording information on and reproducing information from...
Patent number
7,885,160
Issue date
Feb 8, 2011
Hitachi, Ltd.
Takakiyo Yasukawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk discriminating method and optical disk apparatus
Patent number
7,649,821
Issue date
Jan 19, 2010
Hitachi, Ltd.
Takakiyo Yasukawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Information recording systems and methods utilizing controlled mark...
Patent number
7,391,695
Issue date
Jun 24, 2008
Hitachi, Ltd.
Tsuyoshi Toda
G11 - INFORMATION STORAGE
Information
Patent Grant
Information recording method and optical disk apparatus for recordi...
Patent number
7,355,941
Issue date
Apr 8, 2008
Hitachi, Ltd.
Takakiyo Yasukawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Mark-length information recording system
Patent number
7,130,256
Issue date
Oct 31, 2006
Hitachi, Ltd.
Tsuyoshi Toda
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
DATA ARCHIVE SYSTEM
Publication number
20160274805
Publication date
Sep 22, 2016
Hitachi-LG Data Storage, Inc.
Chiyo OHNO
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
OPTICAL DISK INSPECTION METHOD AND OPTICAL DISK LIBRARY DEVICE
Publication number
20150213828
Publication date
Jul 30, 2015
Hitachi-LG Data Storage, Inc.
Takakiyo YASUKAWA
G11 - INFORMATION STORAGE
Information
Patent Application
OPTICAL DISC INSPECTION METHOD IN OPTICAL DISC LIBRARY APPARATUS AN...
Publication number
20140293764
Publication date
Oct 2, 2014
Hitachi-LG Data Storage, Inc.
Takakiyo YASUKAWA
G11 - INFORMATION STORAGE
Information
Patent Application
RECORDING/REPRODUCING DEVICE AND OPTICAL DISK LIBRARY DEVICE
Publication number
20140211600
Publication date
Jul 31, 2014
Hitachi-LG Data Storage, Inc.
Tomomi OKAMOTO
G11 - INFORMATION STORAGE
Information
Patent Application
OPTICAL INFORMATION MEDIUM, OPTICAL INFORMATION RECORDING/REPRODUCI...
Publication number
20120230172
Publication date
Sep 13, 2012
Takakiyo YASUKAWA
G11 - INFORMATION STORAGE
Information
Patent Application
OPTICAL DISC APPARATUS, INFORMATION RECORDING METHOD, AND OPTICAL DISC
Publication number
20120075975
Publication date
Mar 29, 2012
Hitachi Consumer Electronics Co., Ltd.
Takakiyo YASUKAWA
G11 - INFORMATION STORAGE
Information
Patent Application
OPTICAL DISC AND OPTICAL DISC DRIVE
Publication number
20120033535
Publication date
Feb 9, 2012
Manabu SHIOZAWA
G11 - INFORMATION STORAGE
Information
Patent Application
Multilayered Optical Disk And Its Recording Method
Publication number
20110317535
Publication date
Dec 29, 2011
Harukazu MIYAMOTO
G11 - INFORMATION STORAGE
Information
Patent Application
Optical Disc, Optical Disc Reproducing Apparatus, Optical Disc Appa...
Publication number
20110051589
Publication date
Mar 3, 2011
Hitachi-LG Data Storage, Inc.
Takeyoshi Kataoka
G11 - INFORMATION STORAGE
Information
Patent Application
OPTICAL DISC AND OPTICAL DISC APPARATUS
Publication number
20110032806
Publication date
Feb 10, 2011
HITACHI-LG DATA STORAGE, INC./HITACHI CONSUMER ELECTRONICS CO., LTD.
Shinji FUJITA
G11 - INFORMATION STORAGE
Information
Patent Application
MULTILAYERED OPTICAL DISK AND ITS RECORDING METHOD
Publication number
20100309764
Publication date
Dec 9, 2010
Harukazu MIYAMOTO
G11 - INFORMATION STORAGE
Information
Patent Application
Method of Recording Information On and Reproducing Information From...
Publication number
20090080301
Publication date
Mar 26, 2009
Hitachi, Ltd
Takakiyo Yasukawa
G11 - INFORMATION STORAGE
Information
Patent Application
Optical disc apparatus and data recording method thereof
Publication number
20080298194
Publication date
Dec 4, 2008
Hitachi-LG Data Storage, Inc.
Yasuhiro Wada
G11 - INFORMATION STORAGE
Information
Patent Application
Recording and Reproducing Method and Recording and Reproducing Appa...
Publication number
20080137520
Publication date
Jun 12, 2008
Takakiyo Yasukawa
G11 - INFORMATION STORAGE
Information
Patent Application
Optical Disk Recording Apparatus and Optical Disk Recording Method
Publication number
20080112289
Publication date
May 15, 2008
Koichiro NISHIMURA
G11 - INFORMATION STORAGE
Information
Patent Application
Optical disc recording method and optical disc recording apparatus
Publication number
20070297309
Publication date
Dec 27, 2007
Hitachi, Ltd
Takakiyo Yasukawa
G11 - INFORMATION STORAGE
Information
Patent Application
Disk discriminating method and optical disk apparatus
Publication number
20060280082
Publication date
Dec 14, 2006
Takakiyo Yasukawa
G11 - INFORMATION STORAGE
Information
Patent Application
Information recording method and information recording apparatus
Publication number
20060274624
Publication date
Dec 7, 2006
Hitachi, Ltd
Tsuyoshi Toda
G11 - INFORMATION STORAGE
Information
Patent Application
Optical disc recording method and information recording and reprodu...
Publication number
20060023590
Publication date
Feb 2, 2006
Toshiki Ishii
G11 - INFORMATION STORAGE
Information
Patent Application
Information recording method, and optical disk apparatus
Publication number
20050141366
Publication date
Jun 30, 2005
Hitachi, Ltd
Takakiyo Yasukawa
G11 - INFORMATION STORAGE
Information
Patent Application
Optical disk writing method and write power control method thereof
Publication number
20050058033
Publication date
Mar 17, 2005
Junichi Ishii
G11 - INFORMATION STORAGE
Information
Patent Application
Information recording method and information recording apparatus
Publication number
20030067856
Publication date
Apr 10, 2003
Hitachi, Ltd
Tsuyoshi Toda
G11 - INFORMATION STORAGE