Inventor · disambiguated record
Kyo Akagi
Also filed as: AKAGI KYO
34 granted patents·2 pending applications·768 citations·filing 1990–2013
98Inventor score
Files withHITACHI LTD23HITACHI GLOBAL STORAGE TECH7AKAGI KYO2HGST Netherlands BV1HITACHI GLOBAL STORAGE TECH NL1
Top patents by PatentIndex Score
36 records- 0198US5390061AMultilayer magnetoresistance effect-type magnetic headHITACHI LTD·Filed 1991·Granted Feb 14, 1995·156 cites·27 claims
- 0295US6687099B2Magnetic head with conductors formed on endlayers of a multilayer film having magnetic layer coercive force differenceHITACHI LTD·Filed 2002·Granted Feb 3, 2004·33 cites·10 claims
- 0395US6590729B1Magnetic disk drive with servo signal decoder using amplitude detection and phase detection systemHITACHI LTD·Filed 2000·Granted Jul 8, 2003·63 cites·18 claims
- 0494US5766718ALongitudinal magnetic recording medium and apparatusHITACHI LTD·Filed 1994·Granted Jun 16, 1998·70 cites·28 claims
- 0594US5726837AMultilayer magnetoresistance effect-type magnetic headHITACHI LTD·Filed 1994·Granted Mar 10, 1998·43 cites·24 claims
- 0693US5568331AMethod of head positioning and magnetic recording disk drive using the sameHITACHI LTD·Filed 1990·Granted Oct 22, 1996·67 cites·22 claims
- 0792US8797672B2Dynamic track pitch control for shingled magnetic recording (SMR)TANABE HIROYASU·Filed 2012·Granted Aug 5, 2014·23 cites·15 claims
- 0891US5325244AMagnetic recording data storage systemHITACHI LTD·Filed 1992·Granted Jun 28, 1994·55 cites·12 claims
- 0989US6011674AMagnetoresistance effect multilayer film with ferromagnetic film sublayers of different ferromagnetic material compositionsHITACHI LTD·Filed 1996·Granted Jan 4, 2000·33 cites·6 claims
- 1086US6483677B2Magnetic disk apparatus including magnetic head having multilayered reproducing element using tunneling effectHITACHI LTD·Filed 2001·Granted Nov 19, 2002·11 cites·6 claims
- 1185US5093822AHigh-density magnetic recording and optical reproducing apparatusHITACHI LTD·Filed 1990·Granted Mar 3, 1992·39 cites·16 claims
- 1284US7532426B2Method for erase process on recording surface of disk and disk drive apparatusHITACHI GLOBAL STORAGE TECH·Filed 2007·Granted May 12, 2009·6 cites·14 claims
- 1380US7852595B2Magnetic disk unit and manufacturing method thereofHITACHI GLOBAL STORAGE TECH NL·Filed 2008·Granted Dec 14, 2010·4 cites·19 claims
- 1480US6594107B2Magnetic disc apparatus having wiring on the outer bottomHITACHI LTD·Filed 2001·Granted Jul 15, 2003·14 cites·15 claims
- 1579US6987635B2Magnetic disk drive which accesses host RAMHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Jan 17, 2006·26 cites·4 claims
- 1679US6278593B1Magnetoresistance effect elements and magnetic heads using the tunneling magnetoresistive effectHITACHI LTD·Filed 1999·Granted Aug 21, 2001·17 cites·64 claims
- 1775US8482877B2Magnetic recording media, method for servowriting on same, and hard disk driveAKAGI KYO·Filed 2008·Granted Jul 9, 2013·3 cites·14 claims
- 1872US8976484B1Magnetic recording with tilted media in the cross track directionHGST Netherlands BV·Filed 2013·Granted Mar 10, 2015·2 cites·20 claims
- 1969US7054120B2Magnetic apparatus with perpendicular recording medium and head having multilayered reproducing element using tunneling effectHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted May 30, 2006·7 cites·7 claims
- 2068US6687072B2Disk apparatus and information processing system discriminative plural external electronic appliancesHITACHI LTD·Filed 2001·Granted Feb 3, 2004·6 cites·12 claims
- 2162US6483660B1Disk drive unit having multiple disks arranged in a planeHITACHI LTD·Filed 1997·Granted Nov 19, 2002·15 cites·7 claims
- 2262US6130797AMagnetic recorder and magnetooptical recorderHITACHI LTD·Filed 1995·Granted Oct 10, 2000·16 cites·17 claims
- 2362US5253232AMagneto-optical recording apparatus having a magnetic slider with increased rail widthHITACHI LTD·Filed 1990·Granted Oct 12, 1993·13 cites·28 claims
- 2457US6961201B2Magnetic disk apparatusHITACHI LTD·Filed 2003·Granted Nov 1, 2005·3 cites·4 claims
- 2557US5736235AMagnetic recording medium having at least two magnetic layers with easy axes oriented in the same directionHITACHI LTD·Filed 1991·Granted Apr 7, 1998·16 cites·15 claims
- 2657US5557486AThin external memory unit with hard diskHITACHI LTD·Filed 1993·Granted Sep 17, 1996·9 cites·73 claims
- 2756US6822818B2Magnetic hard disk driveHITACHI LTD·Filed 2001·Granted Nov 23, 2004·2 cites·20 claims
- 2855US8861116B2Track pitch variation measurement method using spiral DC pattern writingNISHIYAMA MAO·Filed 2011·Granted Oct 14, 2014·1 cites·20 claims
- 2953US9202504B2Producing a magnetic disk deviceAKAGI KYO·Filed 2010·Granted Dec 1, 2015·1 cites·9 claims
- 3052US7184236B2Magnetic hard disk driveHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Feb 27, 2007·1 cites·2 claims
- 3151US2009300907A1Method for manufacturing magnetic disk unitHITACHI GLOBAL STORAGE TECH·Filed 2008·Application pending·0 cites
- 3250US7116508B2Apparatus for locking a moveable part of a magnetic disk apparatusHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Oct 3, 2006·0 cites·11 claims
- 3349US2007247741A1Method of servo pattern writing on recording surface and data storage deviceHITACHI GLOBAL STORAGE TECH·Filed 2007·Application pending·0 cites
- 3448US5786952AMagnetic digital storage method and system wherein magnetic transition points in adjacent recorded tracks are out of phase with each otherHITACHI LTD·Filed 1995·Granted Jul 28, 1998·8 cites·10 claims
- 3543US5606472ADisk unitHITACHI LTD·Filed 1995·Granted Feb 25, 1997·5 cites·10 claims
- 3641US6862153B2Apparatus for latching a magnetic diskHITACHI LTD·Filed 2001·Granted Mar 1, 2005·0 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →