Akemi Hirotsune

Person

Higashimurayama-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Perpendicular magnetic recording medium
- Patent number 10,276,192
- Issue date Apr 30, 2019
- Western Digital Technologies, Inc.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording media having novel magnetic under-...
- Patent number 9,472,228
- Issue date Oct 18, 2016
- HGST Netherlands B.V.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording media having novel seed layer
- Patent number 9,117,477
- Issue date Aug 25, 2015
- HGST Netherlands B.V.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium and magnetic storage appara...
- Patent number 8,703,307
- Issue date Apr 22, 2014
- HGST Netherlands B.V.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording media having low medium noise and...
- Patent number 8,592,060
- Issue date Nov 26, 2013
- HGST Netherlands B.V.
- Ichiro Tamai
- G11 - INFORMATION STORAGE
Information Patent Grant
Multilayer optical disc for easy positioning of a focused beam
- Patent number 8,514,684
- Issue date Aug 20, 2013
- Hitachi Consumer Electronics Co., Ltd.
- Yoshinori Ishikawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Multilayer optical disc for easy positioning of a focused beam
- Patent number 8,483,030
- Issue date Jul 9, 2013
- Hitachi Consumer Electronics Co., Ltd.
- Yoshinori Ishikawa
Information Patent Grant
Multilayer optical recording medium having three or more recording...
- Patent number 8,315,147
- Issue date Nov 20, 2012
- Hitachi, Ltd.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Grant
Information storage device and storage media
- Patent number 8,134,905
- Issue date Mar 13, 2012
- Hitachi, Ltd.
- Takao Watanabe
- G11 - INFORMATION STORAGE
Information Patent Grant
Reproducing signal measuring method, signal reproducing apparatus,...
- Patent number 8,089,841
- Issue date Jan 3, 2012
- Hitachi, Ltd.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Grant
Information memory device and memory medium
- Patent number 8,040,712
- Issue date Oct 18, 2011
- Hitachi, Ltd.
- Takao Watanabe
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk and recording method of visible figures into optical disk
- Patent number 7,948,861
- Issue date May 24, 2011
- Hitachi, Ltd.
- Akemi Hirotsune
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Information recording method and apparatus with suppressed mark edg...
- Patent number 7,911,910
- Issue date Mar 22, 2011
- Hitachi, Ltd.
- Makoto Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording media, a method for recording/reproducing inf...
- Patent number 7,911,930
- Issue date Mar 22, 2011
- Hitachi, Ltd.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording method and apparatus with suppressed mark edg...
- Patent number 7,907,491
- Issue date Mar 15, 2011
- Hitachi, Ltd.
- Makoto Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording method and apparatus with suppressed mark edg...
- Patent number 7,907,490
- Issue date Mar 15, 2011
- Hitachi, Ltd.
- Makoto Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information recording medium, and information recording met...
- Patent number 7,876,667
- Issue date Jan 25, 2011
- Hitachi, Ltd.
- Toshimichi Shintani
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording medium storing system and storing case
- Patent number 7,852,740
- Issue date Dec 14, 2010
- Hitachi, Ltd.
- Yumiko Anzai
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording method and apparatus with suppressed mark edg...
- Patent number 7,852,727
- Issue date Dec 14, 2010
- Hitachi, Ltd.
- Makoto Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording and retrieval method, and its apparatus
- Patent number 7,821,884
- Issue date Oct 26, 2010
- Hitachi, Ltd.
- Takeshi Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording method and apparatus with suppressed mark edg...
- Patent number 7,684,301
- Issue date Mar 23, 2010
- Hitachi, Ltd.
- Makoto Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording medium, information reproduction method and i...
- Patent number 7,601,412
- Issue date Oct 13, 2009
- Hitachi, Ltd.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording method, recording medium, and recording system
- Patent number 7,584,150
- Issue date Sep 1, 2009
- Hitachi, Ltd.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording media, a method for recording/reproducing inf...
- Patent number 7,570,575
- Issue date Aug 4, 2009
- Hitachi, Ltd.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording method and apparatus with suppressed mark edg...
- Patent number 7,417,933
- Issue date Aug 26, 2008
- Hitachi, Ltd.
- Makoto Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording media, a method for recording/reproducing inf...
- Patent number 7,391,710
- Issue date Jun 24, 2008
- Hitachi, Ltd.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Grant
Information reproduction apparatus and information reproduction method
- Patent number 7,349,321
- Issue date Mar 25, 2008
- Hitachi, Ltd.
- Hiromi Kudo
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording media, a method for recording/reproducing inf...
- Patent number 7,072,283
- Issue date Jul 4, 2006
- Hitachi, Ltd.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for reproducing information data from a recording medium hav...
- Patent number 7,068,587
- Issue date Jun 27, 2006
- Hitachi, Ltd.
- Yasushi Miyauchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording method and apparatus with suppressed mark edg...
- Patent number 7,042,823
- Issue date May 9, 2006
- Hitachi, Ltd.
- Makoto Miyamoto
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE APPARA...
- Publication number 20160118071
- Publication date Apr 28, 2016
- HGST NETHERLANDS B.V.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIUM
- Publication number 20150017480
- Publication date Jan 15, 2015
- HGST NETHERLANDS B.V.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIA HAVING NOVEL MAGNETIC UNDER-...
- Publication number 20140355156
- Publication date Dec 4, 2014
- HGST NETHERLANDS B.V.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIA HAVING NOVEL SEED LAYER
- Publication number 20140334039
- Publication date Nov 13, 2014
- HGST NETHERLANDS B.V.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIA HAVING LOW MEDIUM NOISE AND...
- Publication number 20120154948
- Publication date Jun 21, 2012
- Hitachi Global Storage Technologies Netherlands B.V.
- Ichiro Tamai
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIUM (PMRM) AND SYSTEMS THEREOF
- Publication number 20120099220
- Publication date Apr 26, 2012
- Hitachi Global Storage Technologies Netherlands B.V.
- Ichiro Tamai
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE APPARA...
- Publication number 20120087034
- Publication date Apr 12, 2012
- Hitachi Global Storage Technologies Netherlands B.V.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIUM (PMRM) AND MAGNETIC STORAGE...
- Publication number 20120044595
- Publication date Feb 23, 2012
- Hitachi Global Storage Technologies Netherlands B.V.
- Yotsuo Yahisa
- G11 - INFORMATION STORAGE
Information Patent Application
MULTILAYER OPTICAL DISC
- Publication number 20110299374
- Publication date Dec 8, 2011
- HITACHI CONSUMER ELECTRONICS CO., LTD.
- Yoshinori ISHIKAWA
- G11 - INFORMATION STORAGE
Information Patent Application
SEMICONDUCTOR DEVICE
- Publication number 20110049454
- Publication date Mar 3, 2011
- Motoyasu Terao
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MULTILAYER OPTICAL DISC
- Publication number 20100226239
- Publication date Sep 9, 2010
- Yoshinori Ishikawa
- G11 - INFORMATION STORAGE
Information Patent Application
RECORDING METHOD, RECORDING MEDIUM, AND RECORDING SYSTEM
- Publication number 20090285071
- Publication date Nov 19, 2009
- Hitachi, Ltd
- Akemi HIROTSUNE
- G11 - INFORMATION STORAGE
Information Patent Application
Information Recording Media, A Method For Recording/Reproducing Inf...
- Publication number 20090279412
- Publication date Nov 12, 2009
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Application
MULTILAYER OPTICAL RECORDING MEDIUM
- Publication number 20090257341
- Publication date Oct 15, 2009
- Hitachi, Ltd
- Akemi HIROTSUNE
- G11 - INFORMATION STORAGE
Information Patent Application
Information memory device and memory medium
- Publication number 20090154304
- Publication date Jun 18, 2009
- Hitachi, Ltd.
- Takao Watanabe
- G01 - MEASURING TESTING
Information Patent Application
INFORMATION STORAGE DEVICE AND STORAGE MEDIA
- Publication number 20090116363
- Publication date May 7, 2009
- Hitachi, Ltd.
- Takao WATANABE
- G11 - INFORMATION STORAGE
Information Patent Application
Reproducing signal measuring method, signal reproducing apparatus,...
- Publication number 20090040897
- Publication date Feb 12, 2009
- Hitachi, Ltd.
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Application
Information recording method and apparatus with suppressed mark edg...
- Publication number 20090040901
- Publication date Feb 12, 2009
- Hitachi, Ltd.
- Makoto Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Application
Information recording method and apparatus with suppressed mark edg...
- Publication number 20090034393
- Publication date Feb 5, 2009
- Hitachi, Ltd.
- Makoto Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Application
Information recording method and apparatus with suppressed mark edg...
- Publication number 20080310264
- Publication date Dec 18, 2008
- Hitachi, Ltd.
- Makoto Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Application
Information recording method and apparatus with suppressed mark edg...
- Publication number 20080310270
- Publication date Dec 18, 2008
- Hitachi, Ltd.
- Makoto Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Application
INFORMATION RECORDING AND RETRIEVAL METHOD, AND ITS APPARATUS
- Publication number 20080219109
- Publication date Sep 11, 2008
- Takeshi Maeda
- G11 - INFORMATION STORAGE
Information Patent Application
Information recording method and apparatus with suppressed mark edg...
- Publication number 20080212454
- Publication date Sep 4, 2008
- Hitachi, Ltd.
- Makoto Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Application
Information recording method and apparatus with suppressed mark edg...
- Publication number 20080192617
- Publication date Aug 14, 2008
- Hitachi, Ltd.
- Makoto Miyamoto
- G11 - INFORMATION STORAGE
Information Patent Application
Information Recording Media, A Method For Recording/Reproducing Inf...
- Publication number 20080159100
- Publication date Jul 3, 2008
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Application
DISC RECORDING AND REPRODUCING APPARATUS
- Publication number 20080037405
- Publication date Feb 14, 2008
- Yuji Fujita
- G11 - INFORMATION STORAGE
Information Patent Application
Information Recording Medium Storing System and Storing Case
- Publication number 20070284271
- Publication date Dec 13, 2007
- YUMIKO ANZAI
- G11 - INFORMATION STORAGE
Information Patent Application
Information Recording Drive, Information Recording Media and Detect...
- Publication number 20070279479
- Publication date Dec 6, 2007
- Akemi Hirotsune
- G11 - INFORMATION STORAGE
Information Patent Application
Multi-layered optical recording medium, information recording metho...
- Publication number 20070247999
- Publication date Oct 25, 2007
- Masaki Mukoh
- G11 - INFORMATION STORAGE
Information Patent Application
OPTICAL DISK AND RECORDING METHOD OF VISIBLE FIGURES INTO OPTICAL DISK
- Publication number 20070247513
- Publication date Oct 25, 2007
- Akemi Hirotsune
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Akemi Hirotsune

Person

Patents Grantslast 30 patents

Perpendicular magnetic recording medium

Perpendicular magnetic recording media having novel magnetic under-...

Perpendicular magnetic recording media having novel seed layer

Perpendicular magnetic recording medium and magnetic storage appara...

Perpendicular magnetic recording media having low medium noise and...

Multilayer optical disc for easy positioning of a focused beam

Multilayer optical disc for easy positioning of a focused beam

Multilayer optical recording medium having three or more recording...

Information storage device and storage media

Reproducing signal measuring method, signal reproducing apparatus,...

Information memory device and memory medium

Optical disk and recording method of visible figures into optical disk

Information recording method and apparatus with suppressed mark edg...

Information recording media, a method for recording/reproducing inf...

Information recording method and apparatus with suppressed mark edg...

Information recording method and apparatus with suppressed mark edg...

Optical information recording medium, and information recording met...

Information recording medium storing system and storing case

Information recording method and apparatus with suppressed mark edg...

Information recording and retrieval method, and its apparatus

Information recording method and apparatus with suppressed mark edg...

Information recording medium, information reproduction method and i...

Recording method, recording medium, and recording system

Information recording media, a method for recording/reproducing inf...

Information recording method and apparatus with suppressed mark edg...

Information recording media, a method for recording/reproducing inf...

Information reproduction apparatus and information reproduction method

Information recording media, a method for recording/reproducing inf...

Method for reproducing information data from a recording medium hav...

Information recording method and apparatus with suppressed mark edg...

Patents Applicationslast 30 patents

PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE APPARA...

PERPENDICULAR MAGNETIC RECORDING MEDIUM

PERPENDICULAR MAGNETIC RECORDING MEDIA HAVING NOVEL MAGNETIC UNDER-...

PERPENDICULAR MAGNETIC RECORDING MEDIA HAVING NOVEL SEED LAYER

PERPENDICULAR MAGNETIC RECORDING MEDIA HAVING LOW MEDIUM NOISE AND...

PERPENDICULAR MAGNETIC RECORDING MEDIUM (PMRM) AND SYSTEMS THEREOF

PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE APPARA...

PERPENDICULAR MAGNETIC RECORDING MEDIUM (PMRM) AND MAGNETIC STORAGE...

MULTILAYER OPTICAL DISC

SEMICONDUCTOR DEVICE

MULTILAYER OPTICAL DISC

RECORDING METHOD, RECORDING MEDIUM, AND RECORDING SYSTEM

Information Recording Media, A Method For Recording/Reproducing Inf...

MULTILAYER OPTICAL RECORDING MEDIUM

Information memory device and memory medium

INFORMATION STORAGE DEVICE AND STORAGE MEDIA

Reproducing signal measuring method, signal reproducing apparatus,...

Information recording method and apparatus with suppressed mark edg...

Information recording method and apparatus with suppressed mark edg...

Information recording method and apparatus with suppressed mark edg...

Information recording method and apparatus with suppressed mark edg...

INFORMATION RECORDING AND RETRIEVAL METHOD, AND ITS APPARATUS

Information recording method and apparatus with suppressed mark edg...

Information recording method and apparatus with suppressed mark edg...

Information Recording Media, A Method For Recording/Reproducing Inf...

DISC RECORDING AND REPRODUCING APPARATUS

Information Recording Medium Storing System and Storing Case

Information Recording Drive, Information Recording Media and Detect...

Multi-layered optical recording medium, information recording metho...

OPTICAL DISK AND RECORDING METHOD OF VISIBLE FIGURES INTO OPTICAL DISK