Inventor · disambiguated record
Koichi Terunuma
Also filed as: TERUNUMA KOICHI
58 granted patents·6 pending applications·1,035 citations·filing 1994–2010
99Inventor score
Top patents by PatentIndex Score
64 records- 0197US7477491B2GMR device having an improved free layerHEADWAY TECHNOLOGIES INC·Filed 2005·Granted Jan 13, 2009·42 cites·13 claims
- 0297US6563681B1Magnetoresistance effect film and magnetoresistance effect type headTDK CORP·Filed 2000·Granted May 13, 2003·124 cites·34 claims
- 0396US6998150B2Method of adjusting CoFe free layer magnetostrictionHEADWAY TECHNOLOGIES INC·Filed 2003·Granted Feb 14, 2006·84 cites·17 claims
- 0495US7791838B2Magnetic head apparatus and magnetic recording and reproducing apparatusTDK CORP·Filed 2007·Granted Sep 7, 2010·24 cites·20 claims
- 0593US6657826B2Magnetoresistive device and method of manufacturing same, thin-film magnetic head and method of manufacturing same, head gimbal assembly and hard disk driveTDK CORP·Filed 2001·Granted Dec 2, 2003·34 cites·8 claims
- 0693US6591481B2Method of manufacturing magnetoresistive device and method of manufacturing thin-film magnetic headTDK CORP·Filed 2001·Granted Jul 15, 2003·44 cites·8 claims
- 0792US6636395B1Magnetic transducer and thin film magnetic head using the sameTDK CORP·Filed 2000·Granted Oct 21, 2003·32 cites·11 claims
- 0891US6721140B2Magnetoresistive device and method of manufacturing same and thin-film magnetic head and method of manufacturing sameTDK CORP·Filed 2001·Granted Apr 13, 2004·32 cites·6 claims
- 0990US7675718B2Narrow track CPP head with bias cancellationHEADWAY TECHNOLOGIES INC·Filed 2006·Granted Mar 9, 2010·8 cites·16 claims
- 1090US6545848B1Magnetic transducer, thin film magnetic head and method of manufacturing the sameTDK CORP·Filed 2000·Granted Apr 8, 2003·31 cites·16 claims
- 1189US7046487B2Magnetoresistive effective element, thin film magnetic head, magnetic head device and magnetic recording/reproducing deviceTDK CORP·Filed 2003·Granted May 16, 2006·25 cites·29 claims
- 1288US6151193AThin film magnetic headTDK CORP·Filed 1998·Granted Nov 21, 2000·54 cites·4 claims
- 1385US7088560B2Thin film magnetic head including a heat dissipation layer, method of manufacturing the same and magnetic disk driveTDK CORP·Filed 2005·Granted Aug 8, 2006·5 cites·17 claims
- 1484US7506430B2Process to manufacture narrow track CPP head with bias cancellationHEADWAY TECHNOLOGIES INC·Filed 2006·Granted Mar 24, 2009·4 cites·10 claims
- 1584US6636398B2Magnetoresistive effect sensor, thin-film magnetic head with the sensor, manufacturing method of magnetoresistive sensor and manufacturing method of thin-film magnetic headTDK CORP·Filed 2001·Granted Oct 21, 2003·18 cites·45 claims
- 1683US7134184B2Process of manufacturing a narrow track CCP head with bias cancellationHEADWAY TECHNOLOGIES INC·Filed 2003·Granted Nov 14, 2006·12 cites·6 claims
- 1783US6731474B2Thin film magnetic head and method of manufacturing the sameTDK CORP·Filed 2001·Granted May 4, 2004·17 cites·11 claims
- 1883US6466415B1Thin film magnetic head including a first pole portion having a depressed portion for receiving a coilTDK CORP·Filed 2000·Granted Oct 15, 2002·18 cites·18 claims
- 1982US6381093B2Thin film magnetic head with magnetic films with increasing widths from a surface facing a recording mediumTDK CORP·Filed 1998·Granted Apr 30, 2002·37 cites·14 claims
- 2082US6329211B1Method of manufacturing thin film magnetic headTDK CORP·Filed 1999·Granted Dec 11, 2001·39 cites·18 claims
- 2181US6040965AThin film magnetic head having grooves which become gradually shallowerTDK CORP·Filed 1997·Granted Mar 21, 2000·36 cites·18 claims
- 2277US6636392B2Thin-film magnetic head with magnetoresistive effect elementTDK CORP·Filed 2001·Granted Oct 21, 2003·13 cites·8 claims
- 2375US6137652AThin film magnetic head with separated yoke and pole tipsTDK CORP·Filed 1998·Granted Oct 24, 2000·26 cites·13 claims
- 2474US6169642B1Thin-film magnetic head having a three-layer pole tip structureTDK CORP·Filed 1998·Granted Jan 2, 2001·29 cites·5 claims
- 2572US6477018B1Thin-film magnetic head and method of manufacturing the sameTDK CORP·Filed 1999·Granted Nov 5, 2002·22 cites·9 claims
- 2672US6444406B1Method for forming photoresist pattern and manufacturing method of magnetoresistive effect thin-film magnetic headTDK CORP·Filed 2001·Granted Sep 3, 2002·14 cites·5 claims
- 2770US7126794B2Thin film magnetic head including heat dissipation, method of manufacturing the same, and magnetic disk driveTDK CORP·Filed 2003·Granted Oct 24, 2006·6 cites·5 claims
- 2870US6604275B1Method of manufacturing thin-film magnetic headTDK CORP·Filed 2000·Granted Aug 12, 2003·12 cites·5 claims
- 2968US6163437AMagnetic head with spin valve effect magnetoresistive element and its manufacturing methodTDK CORP·Filed 1998·Granted Dec 19, 2000·21 cites·18 claims
- 3067US6633463B1Thin-film magnetic head, head suspension assembly, magnetic disk device and manufacturing method of themTDK CORP·Filed 2000·Granted Oct 14, 2003·6 cites·8 claims
- 3167US6414825B1Thin film device, thin film magnetic head and magnetoresistive elementTDK CORP·Filed 1999·Granted Jul 2, 2002·17 cites·7 claims
- 3267US6188543B1Thin film magnetic headTDK CORP·Filed 1998·Granted Feb 13, 2001·19 cites·25 claims
- 3366US7193822B2Thin film magnetic head, head gimbal assembly, and hard disk driveTDK CORP·Filed 2004·Granted Mar 20, 2007·6 cites·15 claims
- 3464US6982855B2Magnetoresistive head having layer structure between free and lead layers with layer structure including fixed magnetization layerTDK CORP·Filed 2003·Granted Jan 3, 2006·5 cites·6 claims
- 3564US6927950B2Thin-film magnetic head and method of manufacturing same, head gimbal assembly, and hard disk driveTDK CORP·Filed 2002·Granted Aug 9, 2005·5 cites·10 claims
- 3663US6178065B1Thin film magnetic head and manufacturing method of the headTDK CORP·Filed 1998·Granted Jan 23, 2001·16 cites·7 claims
- 3762US7029770B2Exchange-coupled film, spin valve film, thin film magnetic head, magnetic head apparatus, and magnetic recording/reproducing apparatusTDK CORP·Filed 2003·Granted Apr 18, 2006·8 cites·9 claims
- 3861US6364964B1Manufacturing method of spin valve magnetoresistive effect element and manufacturing method of thin-film magnetic head with the elementTDK CORP·Filed 2000·Granted Apr 2, 2002·4 cites·10 claims
- 3959US7311850B2Method of forming patterned thin film and method of fabricating micro deviceTDK CORP·Filed 2002·Granted Dec 25, 2007·3 cites·17 claims
- 4059US5999378AMagnetoresistance effect head having a giant magnetoresistance effect filmTOSHIBA KK·Filed 1997·Granted Dec 7, 1999·13 cites·7 claims
- 4156US7259940B2Thin-film magnetic head, head gimbal assembly, and hard disk driveTDK CORP·Filed 2004·Granted Aug 21, 2007·6 cites·8 claims
- 4255US7403358B2Thin film magnetic head, magnetic head device, magnetic recording/reproducing device and method for fabricating a thin film magnetic headTDK CORP·Filed 2005·Granted Jul 22, 2008·0 cites·5 claims
- 4355US7221546B2Thin film magnetic head, head gimbal assembly, and hard disk driveTDK CORP·Filed 2004·Granted May 22, 2007·5 cites·11 claims
- 4454US7107667B2Method for fabricating thin film magnetic headTDK CORP·Filed 2004·Granted Sep 19, 2006·2 cites·5 claims
- 4554US6947261B2Thin film magnetic head and method of manufacturing the sameTDK CORP·Filed 2001·Granted Sep 20, 2005·2 cites·13 claims
- 4654US6404603B1Thin film device, thin film head, and magnetoresistive elementTDK CORP·Filed 1999·Granted Jun 11, 2002·10 cites·14 claims
- 4754US5978184AMagnetoresistive effect element and thin film magnetic head with the elementTDK CORP·Filed 1998·Granted Nov 2, 1999·10 cites·4 claims
- 4851US5558944AMagnetic head and a process for production thereofTDK CORP·Filed 1994·Granted Sep 24, 1996·11 cites·11 claims
- 4948US7027271B2Magnetoresistive device in a thin-film magnetic head and method of manufacturing same having particular electrode overlay configurationTDK CORP·Filed 2001·Granted Apr 11, 2006·4 cites·12 claims
- 5048US6462917B2Magnetoresistive sensor, a thin film magnetic head, a magnetic head device, and a magnetic disk drive deviceTDK CORP·Filed 2001·Granted Oct 8, 2002·4 cites·24 claims
Showing the top 50 of 64 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →