Tetsuya Okai

Person

Hitachi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Perpendicular magnetic recording head having a non-magnetic film re...
- Patent number 8,542,462
- Issue date Sep 24, 2013
- HGST Netherlands B.V.
- Yohji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head for perpendicular recording
- Patent number 8,537,493
- Issue date Sep 17, 2013
- HGST Netherlands B.V.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording head having a main pole and first...
- Patent number 8,351,156
- Issue date Jan 8, 2013
- Hitachi Global Storage Technologies Netherlands B.V.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head and method for production therefor
- Patent number 7,515,380
- Issue date Apr 7, 2009
- Hitachi Global Storage Technologies Japan, Ltd.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic head and magnetic disk apparatus including the same
- Patent number 7,382,576
- Issue date Jun 3, 2008
- Hitachi Global Storage Technologies Japan, Ltd.
- Tomohiro Okada
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head utilizing a CoNiFe alloy with 60-80 weight percent Fe...
- Patent number 7,267,757
- Issue date Sep 11, 2007
- Hitachi Global Storage Technologies Japan, Ltd.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic head and magnetic disk apparatus including the same
- Patent number 7,068,467
- Issue date Jun 27, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Tomohiro Okada
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic head having multiple layered films determining t...
- Patent number 6,898,057
- Issue date May 24, 2005
- Hitachi, Ltd.
- Tetsuya Okai
- G11 - INFORMATION STORAGE
Information Patent Grant
Manufacturing method of a thin film magnetic head
- Patent number 6,877,212
- Issue date Apr 12, 2005
- Hitachi Global Storage Technologies Japan, Ltd.
- Tomohiro Okada
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic head and magnetic disk apparatus including the same
- Patent number 6,483,663
- Issue date Nov 19, 2002
- Hitachi, Ltd.
- Tomohiro Okada
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic head and production method thereof and magnetic...
- Patent number 5,687,045
- Issue date Nov 11, 1997
- Hitachi, Ltd.
- Tetsuya Okai
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic head and method of manufacturing the same
- Patent number 5,316,617
- Issue date May 31, 1994
- Hitachi, Ltd.
- Takashi Kawabe
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Method for forming thin film pattern and method for fabricating thi...
- Patent number 4,971,896
- Issue date Nov 20, 1990
- Hitachi, Ltd.
- Takashi Kawabe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
MAGNETIC HEAD FOR PERPENDICULAR RECORDING
- Publication number 20110141615
- Publication date Jun 16, 2011
- Hitachi Global Storage Technologies Netherlands B.V.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING HEAD AND MAGNETIC RECORDING DEVICE...
- Publication number 20110002063
- Publication date Jan 6, 2011
- Yohji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING HEAD
- Publication number 20100157476
- Publication date Jun 24, 2010
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head and method for production therefor
- Publication number 20070177299
- Publication date Aug 2, 2007
- Hitachi Global Storage Technologies Japan, Ltd.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Application
Thin film magnetic head and magnetic disk apparatus including the same
- Publication number 20060198051
- Publication date Sep 7, 2006
- Tomohiro Okada
- G11 - INFORMATION STORAGE
Information Patent Application
Thin film magnetic head with small track width
- Publication number 20060087766
- Publication date Apr 27, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Application
Thin film magnetic head and magnetic disk apparatus including the same
- Publication number 20050024767
- Publication date Feb 3, 2005
- Tomohiro Okada
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head and method for production therefor
- Publication number 20040101712
- Publication date May 27, 2004
- Hitachi Global Storage Technologies Japan, Ltd.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Application
Thin film magnetic head and method for manufacturing the same
- Publication number 20040100730
- Publication date May 27, 2004
- Tetsuya Okai
- G11 - INFORMATION STORAGE
Information Patent Application
Thin film magnetic heads and a method of producing the same
- Publication number 20020071210
- Publication date Jun 13, 2002
- Hitachi, Ltd.
- Takashi Kawabe
- G11 - INFORMATION STORAGE
Information Patent Application
Thin film magnetic heads and a method of producing the same
- Publication number 20020060880
- Publication date May 23, 2002
- Hitachi, Ltd.
- Takashi Kawabe
- G11 - INFORMATION STORAGE
Information Patent Application
THIN FILM MAGNETIC HEAD AND MAGNETIC DISK APPARATUS INCLUDING THE SAME
- Publication number 20020041463
- Publication date Apr 11, 2002
- TOMOHIRO OKADA
- G11 - INFORMATION STORAGE
Information Patent Application
Thin film magnetic head and magnetic disk apparatus including the same
- Publication number 20020013996
- Publication date Feb 7, 2002
- Hitachi, Ltd
- Tomohiro Okada
- G11 - INFORMATION STORAGE

Tetsuya Okai

Person

Patents Grantslast 30 patents

Perpendicular magnetic recording head having a non-magnetic film re...

Magnetic head for perpendicular recording

Perpendicular magnetic recording head having a main pole and first...

Magnetic head and method for production therefor

Thin film magnetic head and magnetic disk apparatus including the same

Magnetic head utilizing a CoNiFe alloy with 60-80 weight percent Fe...

Thin film magnetic head and magnetic disk apparatus including the same

Thin film magnetic head having multiple layered films determining t...

Manufacturing method of a thin film magnetic head

Thin film magnetic head and magnetic disk apparatus including the same

Thin film magnetic head and production method thereof and magnetic...

Thin film magnetic head and method of manufacturing the same

Method for forming thin film pattern and method for fabricating thi...

Patents Applicationslast 30 patents

MAGNETIC HEAD FOR PERPENDICULAR RECORDING

PERPENDICULAR MAGNETIC RECORDING HEAD AND MAGNETIC RECORDING DEVICE...

PERPENDICULAR MAGNETIC RECORDING HEAD

Magnetic head and method for production therefor

Thin film magnetic head and magnetic disk apparatus including the same

Thin film magnetic head with small track width

Thin film magnetic head and magnetic disk apparatus including the same

Magnetic head and method for production therefor

Thin film magnetic head and method for manufacturing the same

Thin film magnetic heads and a method of producing the same

Thin film magnetic heads and a method of producing the same

THIN FILM MAGNETIC HEAD AND MAGNETIC DISK APPARATUS INCLUDING THE SAME

Thin film magnetic head and magnetic disk apparatus including the same