Inventor
TAGAWA IKUYA
JP34 patents
⚠️ This page may combine multiple inventors who share the name “TAGAWA IKUYA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
18 patentsUS6828046B2Dec 7, 2004
Soft magnetic film of FeCoMO having a high saturation flux density, a moderate soft magnetism and a uniaxial magnetic anisotropy
FUJITSU LTD19 citations93
US6510024B2Jan 21, 2003
Magnetic head and method of manufacturing the same
FUJITSU LTD34 citations92
US6094325AJul 25, 2000
Spin valve head reducing barkhausen noise
FUJITSU LTD20 citations92
US5920449AJul 6, 1999
Recording head for single layer magnetic film perpendicular magnetization medium
FUJITSU LTD38 citations92
US6822831B2Nov 23, 2004
Magnetic thin film, magnetic thin film forming method, and recording head
FUJITSU LTD13 citations84
US6614620B2Sep 2, 2003
Thin film magnetic head
FUJITSU LTD15 citations84
US6282776B1Sep 4, 2001
Magnetic head and method of manufacturing the same
FUJITSU LTD18 citations84
US6002555ADec 14, 1999
Thin film magnetic head
FUJITSU LTD19 citations84
US6751052B1Jun 15, 2004
Thin film magnetic head with short lower magnetic pole piece
FUJITSU LTD16 citations83
US6970324B2Nov 29, 2005
Thin film head with nickel-iron alloy non-magnetic substratum between non-magnetic gap layer and upper magnetic pole layer
FUJITSU LTD12 citations82
US6876524B2Apr 5, 2005
Magnetoresistive transducer having stronger longitudinal bias field
FUJITSU LTD8 citations74
US6813824B2Nov 9, 2004
Method of producing thin film magnetic head
FUJITSU LTD7 citations73
US6624972B1Sep 23, 2003
Magnetic head, method of manufacturing magnetic head and information recording apparatus
FUJITSU LTD8 citations73
US6567239B1May 20, 2003
Thin film magnetic head including a coil insulating resin filler and an insulating metallic layer covering at least partly the insulating resin filler on a datum plane
FUJITSU LTD12 citations73
US6001468ADec 14, 1999
Magnetic head
FUJITSU LTD6 citations63
US7016149B2Mar 21, 2006
Recording magnetic head and magnetic storage device using the same
FUJITSU LTD6 citations62
US6507448B2Jan 14, 2003
Information recording device having a function of erasing information in a standby state
FUJITSU LTD5 citations62
US6720075B2Apr 13, 2004
Magnetic recording medium and magnetic recording medium driver for the medium with N-type ferrimagnetic recording layer
FUJITSU LTD0 citations42
HITACHI GLOBAL STORAGE TECH
7 patentsUS7830631B2Nov 9, 2010
Controlling an overshoot amplitude level based on a recording data pattern in a magnetic disk drive
HITACHI GLOBAL STORAGE TECH9 citations84
US7518825B2Apr 14, 2009
Thin film magnetic head wherein at least one of a return pole, a first shield, and a second shield has a reverse taper
HITACHI GLOBAL STORAGE TECH13 citations84
US7450349B2Nov 11, 2008
Magnetic head with soft magnetic shield and magnetic storage
HITACHI GLOBAL STORAGE TECH16 citations84
US7468852B2Dec 23, 2008
Method of demagnetizing magnetic recording medium and apparatus for carrying out same
HITACHI GLOBAL STORAGE TECH3 citations62
US7408738B2Aug 5, 2008
Magnetic recording system with improved magnetic shield
HITACHI GLOBAL STORAGE TECH0 citations52
US7486485B2Feb 3, 2009
Perpendicular hard disk drive resistive against external magnetic field
HITACHI GLOBAL STORAGE TECH0 citations51
US7428115B2Sep 23, 2008
Magnetic hard disk drive with countermeasure against spike noise
HITACHI GLOBAL STORAGE TECH0 citations42
HGST Netherlands BV
6 patentsUS8995088B1Mar 31, 2015
Heat sink for a spin torque oscillator (STO) in microwave assisted magnetic recording (MAMR)
HGST Netherlands BV54 citations96
US8917465B1Dec 23, 2014
Implementing spin torque oscillator power-on oscillation checker using ramped STO bias differentiator in microwave-assisted magnetic recording (MAMR) hard disk drives
HGST Netherlands BV22 citations92
US8570684B1Oct 29, 2013
Implementing integrated spin-torque oscillator and interface bias control for hard disk drives
HGST Netherlands BV25 citations92
US9355668B2May 31, 2016
Hard disk drive with contact detection using a spin torque oscillator
HGST Netherlands BV16 citations84
US8848317B2Sep 30, 2014
Magnetic data recording system with mirror image asymmetric magnetic write elements
HGST Netherlands BV15 citations84
US8553507B1Oct 8, 2013
Write track shift control in shingled-microwave-assisted magnetic recording (MAMR-SMR)
HGST Netherlands BV11 citations84