Youji Maruyama

Person

Iruma, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic head for perpendicular recording having pole pieces provid...
- Patent number 8,000,058
- Issue date Aug 16, 2011
- Hitachi Global Storage Technologies Netherlands B.V.
- Tadayuki Iwakura
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head and magnetic disk storage apparatus mounting the head
- Patent number 7,881,012
- Issue date Feb 1, 2011
- Hitachi Global Storage Technologies Netherlands B.V.
- Masafumi Mochizuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic head with layer having high saturation magnetic...
- Patent number 7,679,860
- Issue date Mar 16, 2010
- Hitachi Global Storage Technologies Netherlands B.V.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic head with high Fe alloy plating film and manufac...
- Patent number 7,589,937
- Issue date Sep 15, 2009
- Hitachi Global Storage Technologies Japan, Ltd.
- Gen Oikawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic thin film head
- Patent number 7,485,378
- Issue date Feb 3, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Gen Oikawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Separate read/write magnetic head
- Patent number 7,262,940
- Issue date Aug 28, 2007
- Hitachi Global Storage Technologies Japan, Ltd.
- Tadayuki Iwakura
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording and reproducing method and apparatus
- Patent number 5,615,192
- Issue date Mar 25, 1997
- Hitachi, Ltd.
- Atsushi Kikukawa
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Bloch line memory device and method for operating same
- Patent number 5,050,122
- Issue date Sep 17, 1991
- Hitachi, Ltd.
- Youji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Bloch line memory device
- Patent number 5,047,978
- Issue date Sep 10, 1991
- Hitachi, Ltd.
- Youji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Bloch line memory device
- Patent number 4,949,304
- Issue date Aug 14, 1990
- Hitachi, Ltd.
- Youji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Bloch line memory device
- Patent number 4,845,671
- Issue date Jul 4, 1989
- Hitachi, Ltd.
- Youji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Bloch line memory device
- Patent number 4,831,584
- Issue date May 16, 1989
- Hitachi, Ltd.
- Youji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Photomask
- Patent number 4,415,262
- Issue date Nov 15, 1983
- Hitachi, Ltd.
- Naoki Koyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Magnetic head and magnetic disk storage apparatus mounting the head
- Publication number 20070211382
- Publication date Sep 13, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Masafumi Mochizuki
- G11 - INFORMATION STORAGE
Information Patent Application
Thin film magnetic head with layer having high saturation magnetic...
- Publication number 20060203385
- Publication date Sep 14, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head for perpendicular recording
- Publication number 20060087765
- Publication date Apr 27, 2006
- Hitachi Global Storage Technologies
- Tadayuki Iwakura
- 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
Magnetic thin film head
- Publication number 20050208340
- Publication date Sep 22, 2005
- Hitachi Global Storage Technologies Netherlands B.V.
- Gen Oikawa
- B32 - LAYERED PRODUCTS
Information Patent Application
Thin film magnetic head and manufacturing method thereof
- Publication number 20050036236
- Publication date Feb 17, 2005
- Hitachi Global Storage Technologies, Japan, Ltd.
- Gen Oikawa
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head whose composite magnetic core is recessed from air be...
- Publication number 20040246621
- Publication date Dec 9, 2004
- Hitachi Global Storage Technologies Japan, Ltd.
- Youji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Application
Separate read/write magnetic head
- Publication number 20040228041
- Publication date Nov 18, 2004
- Hitachi, Ltd
- Tadayuki Iwakura
- G11 - INFORMATION STORAGE

Youji Maruyama

Person

Patents Grantslast 30 patents

Magnetic head for perpendicular recording having pole pieces provid...

Magnetic head and magnetic disk storage apparatus mounting the head

Thin film magnetic head with layer having high saturation magnetic...

Thin film magnetic head with high Fe alloy plating film and manufac...

Magnetic thin film head

Separate read/write magnetic head

Information recording and reproducing method and apparatus

Bloch line memory device and method for operating same

Bloch line memory device

Bloch line memory device

Bloch line memory device

Bloch line memory device

Photomask

Patents Applicationslast 30 patents

Magnetic head and magnetic disk storage apparatus mounting the head

Thin film magnetic head with layer having high saturation magnetic...

Magnetic head for perpendicular recording

Thin film magnetic head with small track width

Magnetic thin film head

Thin film magnetic head and manufacturing method thereof

Magnetic head whose composite magnetic core is recessed from air be...

Separate read/write magnetic head