Yoshiyuki Hirayama

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic recording medium having a L10-type ordered alloy
- Patent number 9,595,282
- Issue date Mar 14, 2017
- HGST Netherlands B.V.
- Junichi Sayama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head, magnetic recording method and apparatus for controll...
- Patent number 9,275,672
- Issue date Mar 1, 2016
- Hitachi, Ltd.
- Yoshihiro Shiroishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Microwave assisted magnetic recording medium and information record...
- Patent number 8,883,327
- Issue date Nov 11, 2014
- Hitachi, Ltd.
- Yoshiyuki Hirayama
- G11 - INFORMATION STORAGE
Information Patent Grant
Bit-patterned media magnetic recording disk with two sizes of dots...
- Patent number 8,873,179
- Issue date Oct 28, 2014
- HGST Netherlands B.V.
- Yoshiyuki Hirayama
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium and magnetic recording/repr...
- Patent number 8,771,849
- Issue date Jul 8, 2014
- HGST Netherlands B.V.
- Hiroaki Nemoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic storage apparatus
- Patent number 8,709,618
- Issue date Apr 29, 2014
- HGST Netherlands B.V.
- Ikuko Takekuma
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium and magnetic storage appara...
- Patent number 7,875,373
- Issue date Jan 25, 2011
- Hitachi Global Storage Technologies Netherlands B.V.
- Yoshiyuki Hirayama
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium and magnetic storage appara...
- Patent number 7,701,667
- Issue date Apr 20, 2010
- Hitachi Global Storage Technologies Netherlands B.V.
- Ichiro Tamai
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium and manufacturing of the same
- Patent number 7,651,795
- Issue date Jan 26, 2010
- Hitachi Global Storage Technologies Netherlands B.V.
- Ichiro Tamai
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium for high density recording...
- Patent number 7,641,989
- Issue date Jan 5, 2010
- Hitachi Global Storage Technologies Netherlands B.V.
- Ikuko Takekuma
- 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 media and magnetic storage apparat...
- Patent number 7,618,722
- Issue date Nov 17, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Yoshiyuki Hirayama
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium for high density magnetic r...
- Patent number 7,534,507
- Issue date May 19, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Reiko Arai
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording media
- Patent number 7,510,789
- Issue date Mar 31, 2009
- Hitachi Global Storage Technologies Japan, Ltd.
- Yoshiyuki Hirayama
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording media, magnetic recording apparatus
- Patent number 7,399,540
- Issue date Jul 15, 2008
- Hitachi Global Storage Technologies Japan, Ltd.
- Masaaki Futamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording media and magnetic storage apparat...
- Patent number 7,368,185
- Issue date May 6, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Yoshiyuki Hirayama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and magnetic recording system using the same
- Patent number 7,261,958
- Issue date Aug 28, 2007
- Hitachi Global Storage Technologies Japan, Ltd.
- Yoshiyuki Hirayama
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for manufacturing a magnetic medium
- Patent number 7,249,405
- Issue date Jul 31, 2007
- Hitachi Global Storage Technologies Japan, Ltd.
- Yoshio Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording media, magnetic recording apparatus
- Patent number 7,147,941
- Issue date Dec 12, 2006
- Hitachi, Ltd.
- Masaaki Futamoto
- 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
Method for testing or recording servo signal on perpendicular magne...
- Patent number 7,026,810
- Issue date Apr 11, 2006
- Hitachi, Ltd.
- Atsushi Kikugawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording media
- Patent number 6,916,557
- Issue date Jul 12, 2005
- Hitachi Global Storage Technologies Japan, Ltd.
- Yoshiyuki Hirayama
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for testing or recording servo signal on perpendicular magne...
- Patent number 6,894,488
- Issue date May 17, 2005
- Hitachi, Ltd.
- Atsushi Kikugawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium with controlled grain diameters and metho...
- Patent number 6,884,521
- Issue date Apr 26, 2005
- Hitachi Global Storage Technologies Japan, Ltd.
- Yoshio Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular-magnetic recording media and magnetic recording appar...
- Patent number 6,852,398
- Issue date Feb 8, 2005
- Hitachi, Ltd.
- Kazuetsu Yoshida
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and magnetic recording apparatus
- Patent number 6,830,837
- Issue date Dec 14, 2004
- Hitachi Global Storage Technologies Japan, Ltd.
- Tetsuya Kanbe
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium and magnetic recording appa...
- Patent number 6,770,389
- Issue date Aug 3, 2004
- Hitachi, Ltd.
- Masaaki Futamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and magnetic recording apparatus using th...
- Patent number 6,716,516
- Issue date Apr 6, 2004
- Hitachi, Ltd.
- Masaaki Futamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording media, magnetic recording apparatus
- Patent number 6,686,070
- Issue date Feb 3, 2004
- Hitachi, Ltd.
- Masaaki Futamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular-magnetic recording media and magnetic recording appar...
- Patent number 6,641,901
- Issue date Nov 4, 2003
- Hitachi, Ltd.
- Kazuetsu Yoshida
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
MAGNETIC RECORDING MEDIUM HAVING A L10-TYPE REGULAR ALLOY
- Publication number 20160217816
- Publication date Jul 28, 2016
- HGST NETHERLANDS B.V.
- Junichi Sayama
- G11 - INFORMATION STORAGE
Information Patent Application
SEALED DISK MEDIA ENCLOSURE
- Publication number 20150294691
- Publication date Oct 15, 2015
- HGST NETHERLANDS B.V.
- Hiroshi Inaba
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE DEVICE
- Publication number 20140104724
- Publication date Apr 17, 2014
- Hitachi, Ltd
- Yoshihiro SHIROISHI
- G11 - INFORMATION STORAGE
Information Patent Application
MICROWAVE ASSISTED MAGNETIC RECORDING MEDIUM AND INFORMATION RECORD...
- Publication number 20130293983
- Publication date Nov 7, 2013
- Hitachi, Ltd
- Yoshiyuki HIRAYAMA
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC HEAD, MAGNETIC RECORDING METHOD AND APPARATUS FOR CONTROLL...
- Publication number 20130229895
- Publication date Sep 5, 2013
- Hitachi, Ltd
- Yoshihiro SHIROISHI
- G11 - INFORMATION STORAGE
Information Patent Application
PATTERNED MAGNETIC RECORDING MEDIA AND METHODS OF PRODUCTION THEREO...
- Publication number 20130155543
- Publication date Jun 20, 2013
- Hitachi Global Storage Technologies Netherlands B.V.
- Yoshinori Honda
- G11 - INFORMATION STORAGE
Information Patent Application
PATTERNED MEDIA AND FABRICATION METHOD THEREOF
- Publication number 20110164336
- Publication date Jul 7, 2011
- Hitachi, Ltd.
- Yoshiyuki Hirayama
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording medium and magnetic recording/repr...
- Publication number 20090195924
- Publication date Aug 6, 2009
- Hiroaki Nemoto
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIUM WITH GRANULAR STRUCTURED MA...
- Publication number 20080186627
- Publication date Aug 7, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Yoshiyuki Hirayama
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Perpendicular magnetic recording media and magnetic storage apparat...
- Publication number 20080182134
- Publication date Jul 31, 2008
- Hitachi Global Storage Technologies
- Yoshiyuki Hirayama
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording medium and magnetic storage appara...
- Publication number 20080113221
- Publication date May 15, 2008
- Hitachi Global Storage Technologies Inc.
- Yoshiyuki Hirayama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic storage apparatus
- Publication number 20070223142
- Publication date Sep 27, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Ikuko Takekuma
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording medium and magnetic storage appara...
- Publication number 20070188924
- Publication date Aug 16, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Ichiro Tamai
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording media, magnetic recording apparatus
- Publication number 20070037018
- Publication date Feb 15, 2007
- Masaaki Futamoto
- 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
Perpendicular magnetic recording medium for high density recording...
- Publication number 20060127703
- Publication date Jun 15, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Ikuko Takekuma
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Perpendicular magnetic recording medium with granular structured ma...
- Publication number 20060088737
- Publication date Apr 27, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Yoshiyuki Hirayama
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Perpendicular magnetic recording medium for high density magnetic r...
- Publication number 20060088734
- Publication date Apr 27, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Reiko Arai
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording medium and manufacturing of the same
- Publication number 20060057431
- Publication date Mar 16, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Ichiro Tamai
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording media
- Publication number 20050227121
- Publication date Oct 13, 2005
- Hitachi Global Storage Technologies, Ltd.
- Yoshiyuki Hirayama
- G11 - INFORMATION STORAGE
Information Patent Application
Method for testing or recording servo signal on perpendicular magne...
- Publication number 20050204285
- Publication date Sep 15, 2005
- Atsushi Kikugawa
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording media and magnetic storage apparat...
- Publication number 20050142388
- Publication date Jun 30, 2005
- Hitachi Global Storage Technologies Netherlands, B.V.
- Yoshiyuki Hirayama
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording medium having alternatively layere...
- Publication number 20050142378
- Publication date Jun 30, 2005
- Hitachi Global Storage Technologies Netherlands, B.V.
- Hiroaki Nemoto
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium and method for manufacturing the same
- Publication number 20050138796
- Publication date Jun 30, 2005
- Hitachi Global Storage Technologies Japan, Ltd.
- Yoshio Takahashi
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium and magnetic recording apparatus
- Publication number 20050084716
- Publication date Apr 21, 2005
- Hitachi Global StorageTechnologies Japan, Ltd.
- Tetsuya Kanbe
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording medium and manufacturing of the same
- Publication number 20050058854
- Publication date Mar 17, 2005
- Hitachi, Ltd.
- Ikuko Takekuma
- 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
Perpendicular-magnetic recording media and magnetic recording appar...
- Publication number 20040072035
- Publication date Apr 15, 2004
- Hitachi, Ltd.
- Kazuetsu Yoshida
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording media, magnetic recording apparatus
- Publication number 20040062953
- Publication date Apr 1, 2004
- Masaaki Futamoto
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording media
- Publication number 20040038083
- Publication date Feb 26, 2004
- Hitachi, Ltd.
- Yoshiyuki Hirayama
- G11 - INFORMATION STORAGE

Yoshiyuki Hirayama

Person

Patents Grantslast 30 patents

Magnetic recording medium having a L10-type ordered alloy

Magnetic head, magnetic recording method and apparatus for controll...

Microwave assisted magnetic recording medium and information record...

Bit-patterned media magnetic recording disk with two sizes of dots...

Perpendicular magnetic recording medium and magnetic recording/repr...

Magnetic storage apparatus

Perpendicular magnetic recording medium and magnetic storage appara...

Perpendicular magnetic recording medium and magnetic storage appara...

Perpendicular magnetic recording medium and manufacturing of the same

Perpendicular magnetic recording medium for high density recording...

Perpendicular magnetic recording medium and method of manufacturing it

Perpendicular magnetic recording media and magnetic storage apparat...

Perpendicular magnetic recording medium for high density magnetic r...

Perpendicular magnetic recording media

Perpendicular magnetic recording media, magnetic recording apparatus

Perpendicular magnetic recording media and magnetic storage apparat...

Magnetic recording medium and magnetic recording system using the same

Method for manufacturing a magnetic medium

Perpendicular magnetic recording media, magnetic recording apparatus

Perpendicular magnetic recording medium and method of manufacturing it

Method for testing or recording servo signal on perpendicular magne...

Perpendicular magnetic recording media

Method for testing or recording servo signal on perpendicular magne...

Magnetic recording medium with controlled grain diameters and metho...

Perpendicular-magnetic recording media and magnetic recording appar...

Magnetic recording medium and magnetic recording apparatus

Perpendicular magnetic recording medium and magnetic recording appa...

Magnetic recording medium and magnetic recording apparatus using th...

Perpendicular magnetic recording media, magnetic recording apparatus

Perpendicular-magnetic recording media and magnetic recording appar...

Patents Applicationslast 30 patents

MAGNETIC RECORDING MEDIUM HAVING A L10-TYPE REGULAR ALLOY

SEALED DISK MEDIA ENCLOSURE

PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE DEVICE

MICROWAVE ASSISTED MAGNETIC RECORDING MEDIUM AND INFORMATION RECORD...

MAGNETIC HEAD, MAGNETIC RECORDING METHOD AND APPARATUS FOR CONTROLL...

PATTERNED MAGNETIC RECORDING MEDIA AND METHODS OF PRODUCTION THEREO...

PATTERNED MEDIA AND FABRICATION METHOD THEREOF

Perpendicular magnetic recording medium and magnetic recording/repr...

PERPENDICULAR MAGNETIC RECORDING MEDIUM WITH GRANULAR STRUCTURED MA...

Perpendicular magnetic recording media and magnetic storage apparat...

Perpendicular magnetic recording medium and magnetic storage appara...

Magnetic storage apparatus

Perpendicular magnetic recording medium and magnetic storage appara...

Perpendicular magnetic recording media, magnetic recording apparatus

Perpendicular magnetic recording medium and method of manufacturing it

Perpendicular magnetic recording medium for high density recording...

Perpendicular magnetic recording medium with granular structured ma...

Perpendicular magnetic recording medium for high density magnetic r...

Perpendicular magnetic recording medium and manufacturing of the same

Perpendicular magnetic recording media

Method for testing or recording servo signal on perpendicular magne...

Perpendicular magnetic recording media and magnetic storage apparat...

Perpendicular magnetic recording medium having alternatively layere...

Magnetic recording medium and method for manufacturing the same

Magnetic recording medium and magnetic recording apparatus

Perpendicular magnetic recording medium and manufacturing of the same

perpendicular magnetic recording medium and method of manufacturing it

Perpendicular-magnetic recording media and magnetic recording appar...

Perpendicular magnetic recording media, magnetic recording apparatus

Perpendicular magnetic recording media