Inventor
AKAGI KYO
JP34 patents
⚠️ This page may combine multiple inventors who share the name “AKAGI KYO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
23 patentsUS5390061AFeb 14, 1995
Multilayer magnetoresistance effect-type magnetic head
HITACHI LTD156 citations99
US6687099B2Feb 3, 2004
Magnetic head with conductors formed on endlayers of a multilayer film having magnetic layer coercive force difference
HITACHI LTD33 citations96
US6590729B1Jul 8, 2003
Magnetic disk drive with servo signal decoder using amplitude detection and phase detection system
HITACHI LTD63 citations96
US6011674AJan 4, 2000
Magnetoresistance effect multilayer film with ferromagnetic film sublayers of different ferromagnetic material compositions
HITACHI LTD33 citations96
US5766718AJun 16, 1998
Longitudinal magnetic recording medium and apparatus
HITACHI LTD70 citations96
US5726837AMar 10, 1998
Multilayer magnetoresistance effect-type magnetic head
HITACHI LTD43 citations96
US5568331AOct 22, 1996
Method of head positioning and magnetic recording disk drive using the same
HITACHI LTD67 citations96
US5325244AJun 28, 1994
Magnetic recording data storage system
HITACHI LTD55 citations96
US5093822AMar 3, 1992
High-density magnetic recording and optical reproducing apparatus
HITACHI LTD39 citations93
US6278593B1Aug 21, 2001
Magnetoresistance effect elements and magnetic heads using the tunneling magnetoresistive effect
HITACHI LTD17 citations92
US6594107B2Jul 15, 2003
Magnetic disc apparatus having wiring on the outer bottom
HITACHI LTD14 citations84
US6483660B1Nov 19, 2002
Disk drive unit having multiple disks arranged in a plane
HITACHI LTD15 citations84
US6130797AOct 10, 2000
Magnetic recorder and magnetooptical recorder
HITACHI LTD16 citations84
US6483677B2Nov 19, 2002
Magnetic disk apparatus including magnetic head having multilayered reproducing element using tunneling effect
HITACHI LTD11 citations82
US5786952AJul 28, 1998
Magnetic digital storage method and system wherein magnetic transition points in adjacent recorded tracks are out of phase with each other
HITACHI LTD8 citations74
US5736235AApr 7, 1998
Magnetic recording medium having at least two magnetic layers with easy axes oriented in the same direction
HITACHI LTD16 citations74
US5253232AOct 12, 1993
Magneto-optical recording apparatus having a magnetic slider with increased rail width
HITACHI LTD13 citations74
US5606472AFeb 25, 1997
Disk unit
HITACHI LTD5 citations73
US5557486ASep 17, 1996
Thin external memory unit with hard disk
HITACHI LTD9 citations73
US6822818B2Nov 23, 2004
Magnetic hard disk drive
HITACHI LTD2 citations63
US6687072B2Feb 3, 2004
Disk apparatus and information processing system discriminative plural external electronic appliances
HITACHI LTD6 citations63
US6961201B2Nov 1, 2005
Magnetic disk apparatus
HITACHI LTD3 citations62
US6862153B2Mar 1, 2005
Apparatus for latching a magnetic disk
HITACHI LTD0 citations49
HITACHI GLOBAL STORAGE TECH
5 patentsUS6987635B2Jan 17, 2006
Magnetic disk drive which accesses host RAM
HITACHI GLOBAL STORAGE TECH26 citations93
US7054120B2May 30, 2006
Magnetic apparatus with perpendicular recording medium and head having multilayered reproducing element using tunneling effect
HITACHI GLOBAL STORAGE TECH7 citations74
US7532426B2May 12, 2009
Method for erase process on recording surface of disk and disk drive apparatus
HITACHI GLOBAL STORAGE TECH6 citations62
US7184236B2Feb 27, 2007
Magnetic hard disk drive
HITACHI GLOBAL STORAGE TECH1 citations52
US7116508B2Oct 3, 2006
Apparatus for locking a moveable part of a magnetic disk apparatus
HITACHI GLOBAL STORAGE TECH0 citations49