Ikuko Takekuma

Person

Yokohama-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 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
Magnetic recording medium including plural FePt alloy layers includ...
- Patent number 8,679,654
- Issue date Mar 25, 2014
- Hitachi, Ltd.
- Hiroaki Nemoto
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Perpendicular magnetic recording medium and system having a magneti...
- Patent number 8,000,060
- Issue date Aug 16, 2011
- Hitachi Global Storage Technologies Netherlands B.V.
- Zhengang Zhang
- B82 - NANO-TECHNOLOGY
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 medium and manufacturing of the same
- Patent number 7,625,644
- Issue date Dec 1, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Takayuki Ichihara
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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 medium, method of evaluating magne...
- Patent number 7,457,064
- Issue date Nov 25, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Hiroaki Nemoto
- 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
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
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

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
MAGNETIC RECORDING MEDIUM
- Publication number 20120225325
- Publication date Sep 6, 2012
- Hitachi, Ltd.
- HIROAKI NEMOTO
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING APPARATUS
- Publication number 20120214021
- Publication date Aug 23, 2012
- Hitachi, Ltd.
- Junichi Sayama
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MANUFACTURING METHOD OF...
- Publication number 20120052330
- Publication date Mar 1, 2012
- Hitachi, Ltd
- Ikuko TAKEKUMA
- 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 and magnetic storage appara...
- Publication number 20090116137
- Publication date May 7, 2009
- Ikuko Takekuma
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording medium and magnetic recording and...
- Publication number 20090073599
- Publication date Mar 19, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- 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 medium and hard disk drive using t...
- Publication number 20080180843
- Publication date Jul 31, 2008
- Zhengang Zhang
- G11 - INFORMATION STORAGE
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
Magnetic storage device
- Publication number 20070254189
- Publication date Nov 1, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Hiroyuki Nakagawa
- 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, method of evaluating magne...
- Publication number 20070217048
- Publication date Sep 20, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Hiroaki Nemoto
- 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 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 20060088736
- Publication date Apr 27, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Takayuki Ichihara
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Magnetic recording medium and method for production thereof
- Publication number 20060076233
- Publication date Apr 13, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Yoshinori Honda
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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
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 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 medium
- Publication number 20040146747
- Publication date Jul 29, 2004
- Hitachi, Ltd.
- Hiroaki Nemoto
- 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

Ikuko Takekuma

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 recording/repr...

Magnetic storage apparatus

Magnetic recording medium including plural FePt alloy layers includ...

Perpendicular magnetic recording medium and system having a magneti...

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 medium and manufacturing of the same

Perpendicular magnetic recording media and magnetic storage apparat...

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

Perpendicular magnetic recording media

Perpendicular magnetic recording medium, method of evaluating magne...

Perpendicular magnetic recording media and magnetic storage apparat...

Perpendicular magnetic recording medium and method of manufacturing it

Perpendicular magnetic recording media

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

MAGNETIC RECORDING MEDIUM

MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING APPARATUS

PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MANUFACTURING METHOD OF...

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

Perpendicular magnetic recording medium and magnetic storage appara...

Perpendicular magnetic recording medium and magnetic recording and...

PERPENDICULAR MAGNETIC RECORDING MEDIUM WITH GRANULAR STRUCTURED MA...

Perpendicular magnetic recording medium and hard disk drive using t...

Perpendicular magnetic recording media and magnetic storage apparat...

Magnetic storage device

Magnetic storage apparatus

Perpendicular magnetic recording medium, method of evaluating magne...

Perpendicular magnetic recording medium and magnetic storage appara...

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

Magnetic recording medium and method for production thereof

Perpendicular magnetic recording medium and manufacturing of the same

Perpendicular magnetic recording media

Perpendicular magnetic recording media and magnetic storage apparat...

Perpendicular magnetic recording medium and manufacturing of the same

perpendicular magnetic recording medium and method of manufacturing it

Perpendicular magnetic recording medium

Perpendicular magnetic recording media