Inventor · disambiguated record
Takahiko Machita
Also filed as: MACHITA I TAKAHIKO · MACHITA TAKAHIKO
49 granted patents·9 pending applications·455 citations·filing 2004–2016
98Inventor score
Top patents by PatentIndex Score
58 records- 0196US8437106B2Thin film magnetic head including spin-valve film with free layer magnetically connected with shieldYANAGISAWA TAKUMI·Filed 2010·Granted May 7, 2013·36 cites·19 claims
- 0295US8369048B2CPP-type thin film magnetic head provided with side shields including a pair of antimagnetically exchanged-coupled side shield magnetic layersTDK CORP·Filed 2009·Granted Feb 5, 2013·23 cites·12 claims
- 0395US8179642B2Magnetoresistive effect element in CPP structure and magnetic disk deviceKAWAMORI KEITA·Filed 2009·Granted May 15, 2012·34 cites·13 claims
- 0495US8130475B2Method for manufacturing CPP-type thin film magnetic head provided with a pair of magnetically free layersKAWAMORI KEITA·Filed 2009·Granted Mar 6, 2012·30 cites·11 claims
- 0594US8089734B2Magnetoresistive element having a pair of side shieldsMIYAUCHI DAISUKE·Filed 2010·Granted Jan 3, 2012·26 cites·17 claims
- 0694US7615996B1Examination method for CPP-type magnetoresistance effect element having two free layersTDK CORP·Filed 2009·Granted Nov 10, 2009·30 cites·15 claims
- 0793US8462467B2Thin film magnetic head including soft layer magnetically connected with shieldYANAGISAWA TAKUMI·Filed 2010·Granted Jun 11, 2013·17 cites·16 claims
- 0893US7869165B2Magnetic field detecting element having stack with a plurality of free layers and side shield layersTDK CORP·Filed 2007·Granted Jan 11, 2011·26 cites·12 claims
- 0992US8144437B2Magnetoresistive element and thin film magnetic headMIYAUCHI DAISUKE·Filed 2010·Granted Mar 27, 2012·19 cites·11 claims
- 1092US8049997B2Magnetoresistive element including a pair of free layers coupled to a pair of shield layersTDK CORP·Filed 2008·Granted Nov 1, 2011·22 cites·14 claims
- 1192US7974048B2Magneto-resistive effect device of CPP type having shield layers coupled with ferromagnetic layersTDK CORP·Filed 2007·Granted Jul 5, 2011·22 cites·11 claims
- 1291US7869166B2Thin film magnetic head having a bias magnetic layer provided with antiferromagnetic layer and a pinned layer provided with hard magnetic layerTDK CORP·Filed 2007·Granted Jan 11, 2011·12 cites·16 claims
- 1390US7881023B2Magnetoresistive device of the CPP type, and magnetic disk systemTDK CORP·Filed 2008·Granted Feb 1, 2011·10 cites·17 claims
- 1489US7843668B2Magnetoresistive element including two ferromagnetic layersTDK CORP·Filed 2007·Granted Nov 30, 2010·9 cites·11 claims
- 1587US8225489B2Method of manufacturing magnetoresistive element having a pair of free layersMIYAUCHI DAISUKE·Filed 2010·Granted Jul 24, 2012·10 cites·8 claims
- 1686US7558027B2Magnetic field sensor provided with an upper shield layer having portions with different magnetostrictionTDK CORP·Filed 2006·Granted Jul 7, 2009·7 cites·11 claims
- 1785US8472149B2CPP type magneto-resistive effect device and magnetic disk systemHARA SHINJI·Filed 2007·Granted Jun 25, 2013·6 cites·13 claims
- 1885US8040641B2Magneto-resistance effect element with a stacked body having a constricted shapeTDK CORP·Filed 2007·Granted Oct 18, 2011·6 cites·13 claims
- 1985US7876535B2Magnetoresistive device of the CPP type, and magnetic disk systemTDK CORP·Filed 2008·Granted Jan 25, 2011·6 cites·13 claims
- 2085US7542233B2Perpendicular magnetic recording element, thin film magnetic head, magnetic head device, and magnetic recording/reproducing apparatus for reducing deleterious effects of external magnetic fieldsTDK CORP·Filed 2006·Granted Jun 2, 2009·6 cites·7 claims
- 2184US8891208B2CPP-type magnetoresistive element including a rear bias structure and lower shields with inclined magnetizationsTDK CORP·Filed 2013·Granted Nov 18, 2014·8 cites·20 claims
- 2284US8402635B2Method of manufacturing a magnetic head including shield layers which surround a MR elementDEGAWA NAOMICHI·Filed 2011·Granted Mar 26, 2013·12 cites·13 claims
- 2383US8023230B2Magnetoresistive element including a pair of ferromagnetic layers coupled to a pair of shield layersTDK CORP·Filed 2008·Granted Sep 20, 2011·5 cites·9 claims
- 2482US8189303B2Thin film magnetic head having a pair of magnetic layers whose magnetization is controlled by shield layersHARA SHINJI·Filed 2008·Granted May 29, 2012·11 cites·20 claims
- 2582US8094420B2Magnetoresistive device of the CCP (current perpendicular to plane) type with single-domain control of magnetization, and associated magnetic disk systemAYUKAWA TOSHIYUKI·Filed 2008·Granted Jan 10, 2012·6 cites·25 claims
- 2680US8896974B2Thin film magnetic head with side layers under compression stressTDK CORP·Filed 2013·Granted Nov 25, 2014·5 cites·15 claims
- 2780US7916429B2Magnetic field detecting element having thin stack with a plurality of free layers and thick bias magnetic layerTDK CORP·Filed 2007·Granted Mar 29, 2011·4 cites·12 claims
- 2880US7739787B2Method of manufacturing a magnetoresistive elementTDK CORP·Filed 2007·Granted Jun 22, 2010·4 cites·5 claims
- 2979US8913349B2CPP-type magnetoresistance effect element and magnetic disk device using side shield layersTDK CORP·Filed 2013·Granted Dec 16, 2014·4 cites·12 claims
- 3078US8477461B2Thin film magnetic head having a pair of magnetic layers whose magnetization is controlled by shield layersCHOU TSUTOMU·Filed 2008·Granted Jul 2, 2013·9 cites·16 claims
- 3175US8149546B2Magnetic field detecting element including tri-layer stack with stepped portionAYUKAWA TOSHIYUKI·Filed 2007·Granted Apr 3, 2012·3 cites·12 claims
- 3274US7944650B2Magnetoresistive element including layered film touching periphery of spacer layerTDK CORP·Filed 2007·Granted May 17, 2011·2 cites·12 claims
- 3374US7911744B2Magneto-resistive effect device and magnetic disk system with refilled insulation layer in contact with a read end face of a cap layerTDK CORP·Filed 2007·Granted Mar 22, 2011·2 cites·9 claims
- 3473US7733612B2GMR device of the CPP structure, thin-film magnetic head, head gimbal assembly, and hard disk systemTDK CORP·Filed 2007·Granted Jun 8, 2010·2 cites·12 claims
- 3573US7583478B2Thin-film magnetic head, head gimbal assembly, head arm assembly and magnetic disk driveTDK CORP·Filed 2006·Granted Sep 1, 2009·2 cites·20 claims
- 3669US7929257B2Magnetic thin film having spacer layer that contains CuZnTDK CORP·Filed 2007·Granted Apr 19, 2011·5 cites·21 claims
- 3768US7948718B2Magnetoresistive head having an insulating layer with a particular compressive stressTDK CORP·Filed 2005·Granted May 24, 2011·1 cites·6 claims
- 3868US7551407B2Thin-film magnetic head, head gimbal assembly and hard disk driveTDK CORP·Filed 2005·Granted Jun 23, 2009·1 cites·6 claims
- 3967US8087157B2Process to manufacture magnetic tunnel junction read headKAO STUART·Filed 2007·Granted Jan 3, 2012·4 cites·5 claims
- 4060US7881021B2CPP type magnetoresistive device with biasing arrangement for ferromagnetic layers having respective magnetizations orthogonal to one another, and magnetic disk system using sameTDK CORP·Filed 2008·Granted Feb 1, 2011·3 cites·12 claims
- 4159US9129622B2CPP-type magnetoresistance effect element and magnetic disk deviceTDK CORP·Filed 2013·Granted Sep 8, 2015·1 cites·13 claims
- 4256US7764471B2Magneto-resistance effect element having diffusion blocking layer and thin-film magnetic headTDK CORP·Filed 2007·Granted Jul 27, 2010·2 cites·9 claims
- 4354US7947188B2Method for manufacturing CPP-type magnetoresistance effect elementTDK CORP·Filed 2008·Granted May 24, 2011·0 cites·6 claims
- 4454US7810227B2Process to manufacture CPP GMR read headHEADWAY TECHNOLOGIES INC·Filed 2007·Granted Oct 12, 2010·1 cites·5 claims
- 4553US2010103563A1Magnetoresistive element including a pair of ferromagnetic layers coupled to a pair of shield layersTDK CORP·Filed 2008·Application pending·0 cites
- 4653US2010067148A1Thin film magnetic head having a pair of magnetic layers whose magnetization is controlled by shield layersTDK CORP·Filed 2008·Application pending·0 cites
- 4752US2009207534A1Magneto-resistance effect element including stack with dual free layer and magnetized shield electrode layersTDK CORP·Filed 2008·Application pending·0 cites
- 4852US2009213502A1Magneto-resistance effect element having stack with dual free layer and a plurality of bias magnetic layersMIYAUCHI DAISUKE·Filed 2008·Application pending·0 cites
- 4948US7916431B2Magnetoresistive element including insulating film touching periphery of spacer layerTDK CORP·Filed 2007·Granted Mar 29, 2011·0 cites·9 claims
- 5047US8310791B2Magnetoresistive effect element and magnetic disk deviceMACHITA TAKAHIKO·Filed 2009·Granted Nov 13, 2012·0 cites·12 claims
Showing the top 50 of 58 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →