Yohji Maruyama

Person

Iruma, JP

People

Patents Grantslast 30 patents

Information Patent Grant
STO bias control for MAMR head reliability
- Patent number 9,672,846
- Issue date Jun 6, 2017
- Western Digital Technologies, Inc.
- Hideaki Tanaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Microwave-assisted recording head with stable oscillation
- Patent number 9,330,687
- Issue date May 3, 2016
- HGST Netherlands B.V.
- Katsuro Watanabe
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording head with non-magnetic bump structure formed on...
- Patent number 9,230,573
- Issue date Jan 5, 2016
- HGST Netherlands B.V.
- Kimitoshi Etoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic write head having a controlled magnetization...
- Patent number 9,230,566
- Issue date Jan 5, 2016
- HGST Netherlands B.V.
- Tadayuki Iwakura
- G11 - INFORMATION STORAGE
Information Patent Grant
Microwave assisted magnetic recording (MAMR) write head and system
- Patent number 9,142,227
- Issue date Sep 22, 2015
- HGST Netherlands B.V.
- Kimitoshi Etoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Dual magnetic sensor for multi-input magnetic recording
- Patent number 9,099,127
- Issue date Aug 4, 2015
- HGST Netherlands B.V.
- Taku Shintani
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head having a short yoke with a tapered coil structure
- Patent number 9,076,462
- Issue date Jul 7, 2015
- HGST Netherlands B.V.
- Kimitoshi Etoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Head-slider including thin-film magnetic-recording head having redu...
- Patent number 8,786,986
- Issue date Jul 22, 2014
- HGST Netherlands B.V.
- Shigeo Fujita
- G11 - INFORMATION STORAGE
Information Patent Grant
Low permeability material for a side shield in a perpendicular magn...
- Patent number 8,570,683
- Issue date Oct 29, 2013
- HGST Netherlands B.V.
- Yusuke Takahashi
- G11 - INFORMATION STORAGE
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
Noise and particle shield for contact sensor in a slider
- Patent number 8,477,455
- Issue date Jul 2, 2013
- HGST Netherlands B.V.
- Masaru Furukawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head having a facing electrode pair for generating an elec...
- Patent number 8,373,940
- Issue date Feb 12, 2013
- Hitachi Global Storage Technologies Netherlands B.V.
- Yohji Maruyama
- 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 having write pole, first soft magnetic films separate...
- Patent number 8,300,358
- Issue date Oct 30, 2012
- Hitachi Global Storage Technologies Netherlands B.V.
- Yohji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Head-gimbal assembly including a transmission-line structure for hi...
- Patent number 8,248,732
- Issue date Aug 21, 2012
- Hitachi Global Storage Technologies, Netherlands B.V.
- Nobumasa Nishiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head having an asymmetrical shape and systems thereof
- Patent number 8,223,458
- Issue date Jul 17, 2012
- Hitachi Global Storage Technologies Netherlands B.V.
- Masafumi Mochizuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording head having a grooved wrap around...
- Patent number 8,189,293
- Issue date May 29, 2012
- Hitachi Global Storage Technologies Netherlands B.V.
- Yasuhiro Wakabayashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording head and method for manufacturing...
- Patent number 8,064,161
- Issue date Nov 22, 2011
- Hitachi Global Storage Technologies Netherlands B.V.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic shield, manufacturing method thereof and thin film magneti...
- Patent number 7,995,311
- Issue date Aug 9, 2011
- Hitachi Global Storage Technologies Netherlands B.V.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording apparatus with correlated main magnetic pole-to-...
- Patent number 7,920,359
- Issue date Apr 5, 2011
- Hitachi Global Storage Technologies Netherlands B.V.
- Yohji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic film, manufacturing method thereof and thin film magnetic...
- Patent number 7,842,408
- Issue date Nov 30, 2010
- Hitachi Global Storage Technologies Netherlands B.V.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head having first and second protective films with differe...
- Patent number 7,460,335
- Issue date Dec 2, 2008
- Hitachi Global Technologies Japan, Ltd.
- Yohji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk drive
- Patent number 7,443,625
- Issue date Oct 28, 2008
- Hitachi Global Storage Technologies Japan Ltd.
- Takehiko Hamaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording head and method for manufacturing
- Patent number 7,333,301
- Issue date Feb 19, 2008
- Hitachi Global Storage Technologies Japan, Ltd.
- Kimitoshi Etoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Inductive head and magnetic disk apparatus
- Patent number 7,110,218
- Issue date Sep 19, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Shunichi Narumi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head for reducing projection of retrieving and writing uni...
- Patent number 7,064,925
- Issue date Jun 20, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Yohji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk device having a write head to write by shifting in a...
- Patent number 7,057,838
- Issue date Jun 6, 2006
- Hitachi, Ltd.
- Takehiko Hamaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive having magnetic head conduction paths with arrangements...
- Patent number 7,016,156
- Issue date Mar 21, 2006
- Hitachi, Ltd.
- Yohji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive having magnetic head conduction paths with arrangements...
- Patent number 6,894,874
- Issue date May 17, 2005
- Hitachi, Ltd.
- Yohji Maruyama
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
MAGNETIC HEAD HAVING A SHORT YOKE WITH A TAPERED COIL STRUCTURE
- Publication number 20150154987
- Publication date Jun 4, 2015
- HGST NETHERLANDS B.V.
- Kimitoshi Etoh
- G11 - INFORMATION STORAGE
Information Patent Application
MICROWAVE- ASSISTED RECORDING HEAD WITH STABLE OSCILLATION
- Publication number 20150103437
- Publication date Apr 16, 2015
- HGST NETHERLANDS B.V.
- Katsuro Watanabe
- G11 - INFORMATION STORAGE
Information Patent Application
LOW PERMEABILITY MATERIAL FOR A SIDE SHIELD IN A PERPENDICULAR MAGN...
- Publication number 20120327531
- Publication date Dec 27, 2012
- Hitachi Global Storage Technologies Netherlands B.V.
- Yusuke Takahashi
- G11 - INFORMATION STORAGE
Information Patent Application
NOISE AND PARTICLE SHIELD FOR CONTACT SENSOR IN A SLIDER
- Publication number 20120120528
- Publication date May 17, 2012
- Masaru Furukawa
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC HEAD HAVING AN ASYMMETRICAL SHAPE AND SYSTEMS THEREOF
- Publication number 20110249359
- Publication date Oct 13, 2011
- Masafumi Mochizuki
- G11 - INFORMATION STORAGE
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
MAGNETIC RECORDING HEAD AND MAGNETIC DISK STORAGE DEVICE
- Publication number 20110141616
- Publication date Jun 16, 2011
- Hitachi Global Storage Technologies Netherlands B.V.
- Ikuya Tagawa
- G11 - INFORMATION STORAGE
Information Patent Application
HEAD-SLIDER INCLUDING THIN-FILM MAGNETIC-RECORDING HEAD HAVING REDU...
- Publication number 20110116192
- Publication date May 19, 2011
- Shigeo FUJITA
- G11 - INFORMATION STORAGE
Information Patent Application
HEAD-GIMBAL ASSEMBLY INCLUDING A TRANSMISSION-LINE STRUCTURE FOR HI...
- Publication number 20110090602
- Publication date Apr 21, 2011
- Nobumasa NISHIYAMA
- 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 recording apparatus
- Publication number 20080180861
- Publication date Jul 31, 2008
- Yohji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic film, manufacturing method thereof and thin film magnetic...
- Publication number 20080075977
- Publication date Mar 27, 2008
- Hitachi Global Storage Netherlands B.V.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic shield, manufacturing method thereof and thin film magneti...
- Publication number 20080002308
- Publication date Jan 3, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head and magnetic recording/retrieving apparatus using the...
- Publication number 20060198056
- Publication date Sep 7, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Yohji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk drive
- Publication number 20060187578
- Publication date Aug 24, 2006
- Takehiko Hamaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk drive
- Publication number 20050063097
- Publication date Mar 24, 2005
- Yohji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Application
Thin film magnetic head and magnetic storage apparatus
- Publication number 20050007698
- Publication date Jan 13, 2005
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording head and method for manufacturing
- Publication number 20040240121
- Publication date Dec 2, 2004
- Kimitoshi Etoh
- G11 - INFORMATION STORAGE
Information Patent Application
Inductive head and magnetic disk apparatus
- Publication number 20040165310
- Publication date Aug 26, 2004
- Shunichi Narumi
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk drive
- Publication number 20040125489
- Publication date Jul 1, 2004
- Hitachi, Ltd.
- Yohji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head and magnetic recording/retrieving apparatus using the...
- Publication number 20040109262
- Publication date Jun 10, 2004
- HITACHI GLOBAL STORAGE TECHNOLOGIES
- Yohji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk drive
- Publication number 20030189774
- Publication date Oct 9, 2003
- Takehiko Hamaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Recording equalizer and magnetic recording/reproducing apparatus us...
- Publication number 20030142430
- Publication date Jul 31, 2003
- Hitachi, Ltd.
- Masukazu Igarashi
- G11 - INFORMATION STORAGE
Information Patent Application
Method for reproducing information on a recording medium
- Publication number 20030123333
- Publication date Jul 3, 2003
- Hideki Saga
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk drive
- Publication number 20030103294
- Publication date Jun 5, 2003
- Hitachi, Ltd.
- Yohji Maruyama
- G11 - INFORMATION STORAGE
Information Patent Application
Thin film magnetic head and magnetic storage apparatus
- Publication number 20030095357
- Publication date May 22, 2003
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Application
Recording equalizer and magnetic recording/reproducing apparatus us...
- Publication number 20030026024
- Publication date Feb 6, 2003
- Masukazu Igarashi
- G11 - INFORMATION STORAGE
Information Patent Application
Recording equalizer and magnetic recording/reproducing apparatus us...
- Publication number 20020114093
- Publication date Aug 22, 2002
- Masukazu Igarashi
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk drive
- Publication number 20020109944
- Publication date Aug 15, 2002
- Hitachi, Ltd.
- Yohji Maruyama
- G11 - INFORMATION STORAGE

Yohji Maruyama

Person

Patents Grantslast 30 patents

STO bias control for MAMR head reliability

Microwave-assisted recording head with stable oscillation

Magnetic recording head with non-magnetic bump structure formed on...

Perpendicular magnetic write head having a controlled magnetization...

Microwave assisted magnetic recording (MAMR) write head and system

Dual magnetic sensor for multi-input magnetic recording

Magnetic head having a short yoke with a tapered coil structure

Head-slider including thin-film magnetic-recording head having redu...

Low permeability material for a side shield in a perpendicular magn...

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

Magnetic head for perpendicular recording

Noise and particle shield for contact sensor in a slider

Magnetic head having a facing electrode pair for generating an elec...

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

Magnetic head having write pole, first soft magnetic films separate...

Head-gimbal assembly including a transmission-line structure for hi...

Magnetic head having an asymmetrical shape and systems thereof

Perpendicular magnetic recording head having a grooved wrap around...

Perpendicular magnetic recording head and method for manufacturing...

Magnetic shield, manufacturing method thereof and thin film magneti...

Magnetic recording apparatus with correlated main magnetic pole-to-...

Magnetic film, manufacturing method thereof and thin film magnetic...

Magnetic head having first and second protective films with differe...

Magnetic disk drive

Magnetic recording head and method for manufacturing

Inductive head and magnetic disk apparatus

Magnetic head for reducing projection of retrieving and writing uni...

Magnetic disk device having a write head to write by shifting in a...

Disk drive having magnetic head conduction paths with arrangements...

Disk drive having magnetic head conduction paths with arrangements...

Patents Applicationslast 30 patents

MAGNETIC HEAD HAVING A SHORT YOKE WITH A TAPERED COIL STRUCTURE

MICROWAVE- ASSISTED RECORDING HEAD WITH STABLE OSCILLATION

LOW PERMEABILITY MATERIAL FOR A SIDE SHIELD IN A PERPENDICULAR MAGN...

NOISE AND PARTICLE SHIELD FOR CONTACT SENSOR IN A SLIDER

MAGNETIC HEAD HAVING AN ASYMMETRICAL SHAPE AND SYSTEMS THEREOF

MAGNETIC HEAD FOR PERPENDICULAR RECORDING

MAGNETIC RECORDING HEAD AND MAGNETIC DISK STORAGE DEVICE

HEAD-SLIDER INCLUDING THIN-FILM MAGNETIC-RECORDING HEAD HAVING REDU...

HEAD-GIMBAL ASSEMBLY INCLUDING A TRANSMISSION-LINE STRUCTURE FOR HI...

PERPENDICULAR MAGNETIC RECORDING HEAD AND MAGNETIC RECORDING DEVICE...

PERPENDICULAR MAGNETIC RECORDING HEAD

Magnetic recording apparatus

Magnetic film, manufacturing method thereof and thin film magnetic...

Magnetic shield, manufacturing method thereof and thin film magneti...

Magnetic head and magnetic recording/retrieving apparatus using the...

Magnetic disk drive

Magnetic disk drive

Thin film magnetic head and magnetic storage apparatus

Magnetic recording head and method for manufacturing

Inductive head and magnetic disk apparatus

Magnetic disk drive

Magnetic head and magnetic recording/retrieving apparatus using the...

Magnetic disk drive

Recording equalizer and magnetic recording/reproducing apparatus us...

Method for reproducing information on a recording medium

Magnetic disk drive

Thin film magnetic head and magnetic storage apparatus

Recording equalizer and magnetic recording/reproducing apparatus us...

Recording equalizer and magnetic recording/reproducing apparatus us...

Magnetic disk drive