Inventor
KAWATO YOSHIAKI
JP39 patents
⚠️ This page may combine multiple inventors who share the name “KAWATO YOSHIAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
25 patentsUS6710973B2Mar 23, 2004
Single pole type recording head including tapered edges
HITACHI LTD113 citations98
US6891697B2May 10, 2005
Magnetic heads for perpendicular recording and magnetic recording disk apparatus using the same
HITACHI LTD41 citations96
US6813116B2Nov 2, 2004
Magnetic heads for perpendicular recording and magnetic recording disk apparatus using the same
HITACHI LTD56 citations96
US6636391B2Oct 21, 2003
Magnetoresistive sensor, magnetic head and magnetic disk apparatus
HITACHI LTD63 citations96
US6327107B1Dec 4, 2001
Spin tunnel magneto-resistance effect type magnetic sensor and production method thereof
HITACHI LTD48 citations96
US6325900B1Dec 4, 2001
Spin tunnel magneto-resistance effect type magnetic sensor and production method thereof
HITACHI LTD35 citations96
US5936810AAug 10, 1999
Magnetoresistive effect head
HITACHI LTD53 citations96
US6504690B2Jan 7, 2003
Spin-tunnel magneto-resistance type magnetic sensor
HITACHI LTD13 citations93
US6995949B2Feb 7, 2006
Magnetic heads for perpendicular recording and magnetic recording disk apparatus using the same
HITACHI LTD32 citations92
US6795277B2Sep 21, 2004
Magnetic head and magnetic disk drive
HITACHI LTD27 citations92
US6785097B2Aug 31, 2004
Thin film magnetic recording head, method of fabricating the thin film magnetic recording head and magnetic disk drive
HITACHI LTD25 citations92
US6671136B2Dec 30, 2003
Magnetic head and magnetic disk apparatus
HITACHI LTD17 citations92
US6657823B2Dec 2, 2003
Differential detection read sensor, thin film head for perpendicular magnetic recording and perpendicular magnetic recording apparatus
HITACHI LTD39 citations92
US6141190AOct 31, 2000
Magnetoresistive effect head
HITACHI LTD38 citations92
US7038881B2May 2, 2006
Magnetic head for perpendicular recording including a main pole having a pole tip with three tapered sides
HITACHI LTD12 citations84
US6934128B2Aug 23, 2005
Magnetic head and magnetic disk drive
HITACHI LTD14 citations84
US6587318B2Jul 1, 2003
Spin tunnel magneto-resistance effect type magnetic sensor and production method thereof
HITACHI LTD9 citations74
US6545847B2Apr 8, 2003
Magnetoresistive effect head
HITACHI LTD9 citations74
US6507465B1Jan 14, 2003
Magnetoresistive effect head
HITACHI LTD7 citations74
US6327123B1Dec 4, 2001
Magnetic head employing magnetoresistive sensor and magnetic storage and retrieval system
HITACHI LTD11 citations74
US5969896AOct 19, 1999
Magnetic recording/reproducing device with a function of correcting waveform of magnetoresistive-effect head
HITACHI LTD14 citations74
US7274626B2Sep 25, 2007
Magneto-optical recording using a heating element
HITACHI LTD4 citations63
US6731478B2May 4, 2004
Magnetoresistive effect head
HITACHI LTD5 citations63
US6728081B2Apr 27, 2004
Magnetic head and magnetic disk apparatus
HITACHI LTD0 citations52
US7969691B2Jun 28, 2011
Magnetic head and magnetic disk system having a read sensor and a sensing current
HITACHI LTD0 citations51
HITACHI GLOBAL STORAGE TECH
12 patentsUS7532433B2May 12, 2009
Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it
HITACHI GLOBAL STORAGE TECH51 citations98
US7426091B2Sep 16, 2008
Magnetic head
HITACHI GLOBAL STORAGE TECH16 citations93
US7221538B2May 22, 2007
Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it
HITACHI GLOBAL STORAGE TECH30 citations93
US7057853B2Jun 6, 2006
Magnetic head
HITACHI GLOBAL STORAGE TECH37 citations93
US6906898B2Jun 14, 2005
Differential detection read sensor, thin film head for perpendicular magnetic recording and perpendicular magnetic recording apparatus
HITACHI GLOBAL STORAGE TECH27 citations92
US7145750B2Dec 5, 2006
Perpendicular magnetic recording head and perpendicular magnetic recording and reproducing system
HITACHI GLOBAL STORAGE TECH7 citations74
US7054106B2May 30, 2006
Magnetic head and magnetic storage apparatus
HITACHI GLOBAL STORAGE TECH9 citations74
US6926974B2Aug 9, 2005
Perpendicular magnetic recording medium and magnetic storage apparatus
HITACHI GLOBAL STORAGE TECH10 citations74
US7813079B2Oct 12, 2010
Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it
HITACHI GLOBAL STORAGE TECH3 citations63
US7405905B2Jul 29, 2008
Perpendicular magnetic recording and reproducing head
HITACHI GLOBAL STORAGE TECH2 citations63
US7348078B2Mar 25, 2008
Perpendicular magnetic recording medium and magnetic storage apparatus
HITACHI GLOBAL STORAGE TECH2 citations63
US7086140B2Aug 8, 2006
Method of fabricating a thin film magnetic recording head
HITACHI GLOBAL STORAGE TECH0 citations52