Yoji Maruyama

Person

Iruma-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Perpendicular magnetic head with side shield depth less than write...
- Patent number 8,437,102
- Issue date May 7, 2013
- HGST Netherlands B.V.
- Yoji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head and magnetic disk storage apparatus mounting the head
- Patent number 7,848,053
- Issue date Dec 7, 2010
- Hitachi Global Storage Technologies Netherlands B.V.
- Masafumi Mochizuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording head for high frequency drive
- Patent number 7,646,564
- Issue date Jan 12, 2010
- Hitachi Global Storage Technologies Netherlands B.V.
- Yoji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic write head including a magnetic pole piece having a protru...
- Patent number 7,576,952
- Issue date Aug 18, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Yoji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Main pole structure coupled with trailing gap for perpendicular rec...
- Patent number 7,551,395
- Issue date Jun 23, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Yoji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head to prevent undesired data erasure and magnetic disk s...
- Patent number 7,542,244
- Issue date Jun 2, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Hiroshi Fukui
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head with recessed portion, and magnetic recording and rep...
- Patent number 7,483,243
- Issue date Jan 27, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Hiroshi Fukui
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk drive having a function for using a thermal protrusio...
- Patent number 7,330,324
- Issue date Feb 12, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Akira Morinaga
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head for perpendicular recording and magnetic disk storage...
- Patent number 7,180,704
- Issue date Feb 20, 2007
- Hitachi Global Storage Technologies Japan, Ltd.
- Masafumi Mochizuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic head
- Patent number 7,061,726
- Issue date Jun 13, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Shigekazu Ohtomo
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head for perpendicular recording and magnetic disk storage...
- Patent number 7,031,108
- Issue date Apr 18, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Masafumi Mochizuki
- 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
Magnetic head for perpendicular recording and magnetic disk storage...
- Patent number 6,710,972
- Issue date Mar 23, 2004
- Hitachi, Ltd.
- Masafumi Mochizuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head and magnetic storage apparatus using the same
- Patent number 6,469,873
- Issue date Oct 22, 2002
- Hitachi, Ltd.
- Yoji Maruyama
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Magnetic head with dual spin valve element for differential operation
- Patent number 6,392,849
- Issue date May 21, 2002
- Hitachi, Ltd.
- Yoji Maruyama
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Magnetic storage apparatus having a head with sliding pads
- Patent number 6,118,635
- Issue date Sep 12, 2000
- Hitachi, Ltd.
- Yoji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Drive circuit for Bloch line memory
- Patent number 5,023,473
- Issue date Jun 11, 1991
- Hitachi, Ltd.
- Takashi Toyooka
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
MAGNETIC HEAD FOR RECORDING MAGNETIC DATA BY CHANGING THE MAGNETIZA...
- Publication number 20100053812
- Publication date Mar 4, 2010
- Yoji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC HEAD FOR PERPENDICULAR RECORDING AND MAGNETIC RECORDING AP...
- Publication number 20090290257
- Publication date Nov 26, 2009
- Wataru Kimura
- G11 - INFORMATION STORAGE
Information Patent Application
Thin film magnetic head and manufacturing method thereof
- Publication number 20090154014
- Publication date Jun 18, 2009
- Kazue Kudo
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
Perpendicular magnetic recording head and method for manufacturing...
- Publication number 20090059427
- Publication date Mar 5, 2009
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular recording magnetic head
- Publication number 20080231994
- Publication date Sep 25, 2008
- Wataru Kimura
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head and method of manufacturing the same
- Publication number 20080198507
- Publication date Aug 21, 2008
- Yoji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head and magnetic disk storage apparatus mounting the head
- Publication number 20070188921
- Publication date Aug 16, 2007
- Hitachi Global Storage Technologies Netherlands, B.V.
- Masafumi Mochizuki
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular head with the shield which approaches through the con...
- Publication number 20070146929
- Publication date Jun 28, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Yoji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Application
Main pole structure coupled with trailing gap for perpendicular rec...
- Publication number 20070019327
- Publication date Jan 25, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Yoji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording head for high frequency drive
- Publication number 20060203384
- Publication date Sep 14, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Yoji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head with recessed portion, and magnetic recording and rep...
- Publication number 20060082931
- Publication date Apr 20, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Hiroshi Fukui
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head to prevent undesired data erasure and magnetic disk s...
- Publication number 20060082930
- Publication date Apr 20, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Hiroshi Fukui
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head for perpendicular recording and magnetic disk storage...
- Publication number 20050213244
- Publication date Sep 29, 2005
- Hitachi, Ltd.
- Masafumi Mochizuki
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head for perpendicular recording and magnetic disk storage...
- Publication number 20050207061
- Publication date Sep 22, 2005
- Hitachi, Ltd.
- Masafumi Mochizuki
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic write head
- Publication number 20050122622
- Publication date Jun 9, 2005
- Hitachi Global Storage Technologies Netherlands, B.V.
- Yoji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk drive having a function for using a thermal protrusio...
- Publication number 20050046985
- Publication date Mar 3, 2005
- Hitachi Global Storage Technologies Netherlands, B.V.
- Akira Morinaga
- G11 - INFORMATION STORAGE
Information Patent Application
Thin film magnetic head
- Publication number 20040223265
- Publication date Nov 11, 2004
- Hitachi Global Storage Technologies Japan, Ltd.
- Shigekazu Ohtomo
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head for perpendicular recording and magnetic disk storage...
- Publication number 20040184189
- Publication date Sep 23, 2004
- Masafumi Mochizuki
- 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
Magnetic head and magnetic storage apparatus using the same
- Publication number 20010006443
- Publication date Jul 5, 2001
- Yoji Maruyama
- B82 - NANO-TECHNOLOGY

Yoji Maruyama

Person

Patents Grantslast 30 patents

Perpendicular magnetic head with side shield depth less than write...

Magnetic head and magnetic disk storage apparatus mounting the head

Perpendicular magnetic recording head for high frequency drive

Magnetic write head including a magnetic pole piece having a protru...

Main pole structure coupled with trailing gap for perpendicular rec...

Magnetic head to prevent undesired data erasure and magnetic disk s...

Magnetic head with recessed portion, and magnetic recording and rep...

Magnetic disk drive having a function for using a thermal protrusio...

Magnetic head for perpendicular recording and magnetic disk storage...

Thin film magnetic head

Magnetic head for perpendicular recording and magnetic disk storage...

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

Magnetic head for perpendicular recording and magnetic disk storage...

Magnetic head and magnetic storage apparatus using the same

Magnetic head with dual spin valve element for differential operation

Magnetic storage apparatus having a head with sliding pads

Drive circuit for Bloch line memory

Patents Applicationslast 30 patents

MAGNETIC HEAD FOR RECORDING MAGNETIC DATA BY CHANGING THE MAGNETIZA...

MAGNETIC HEAD FOR PERPENDICULAR RECORDING AND MAGNETIC RECORDING AP...

Thin film magnetic head and manufacturing method thereof

Perpendicular magnetic recording head and method for manufacturing...

Perpendicular recording magnetic head

Magnetic head and method of manufacturing the same

Magnetic head and magnetic disk storage apparatus mounting the head

Perpendicular head with the shield which approaches through the con...

Main pole structure coupled with trailing gap for perpendicular rec...

Perpendicular magnetic recording head for high frequency drive

Magnetic head with recessed portion, and magnetic recording and rep...

Magnetic head to prevent undesired data erasure and magnetic disk s...

Magnetic head for perpendicular recording and magnetic disk storage...

Magnetic head for perpendicular recording and magnetic disk storage...

Magnetic write head

Magnetic disk drive having a function for using a thermal protrusio...

Thin film magnetic head

Magnetic head for perpendicular recording and magnetic disk storage...

Thin film magnetic head and method for manufacturing the same

Magnetic head and magnetic storage apparatus using the same