Inventor · disambiguated record
Norikazu Ota
Also filed as: OTA NORIKAZU
71 granted patents·11 pending applications·571 citations·filing 1999–2025
99Inventor score
Top patents by PatentIndex Score
82 records- 0197US11372029B2Magnetic field detection apparatus and current detection apparatusTDK CORP·Filed 2020·Granted Jun 28, 2022·3 cites·12 claims
- 0295US11885835B2Magnetic field detection apparatus and current detection apparatusTDK CORP·Filed 2022·Granted Jan 30, 2024·2 cites·21 claims
- 0395US11686788B2Magnetic sensor device and magnetic sensor systemTDK CORP·Filed 2022·Granted Jun 27, 2023·2 cites·22 claims
- 0494US7649713B2Thin-film magnetic head with heating element and heatsinkTDK CORP·Filed 2006·Granted Jan 19, 2010·22 cites·33 claims
- 0594US7623322B2Thin-film magnetic head with heater spaced further from medium facing surface than split in shieldTDK CORP·Filed 2005·Granted Nov 24, 2009·28 cites·13 claims
- 0694US7612965B2Thin-film magnetic head having heatsink wider on air bearing surface sideTDK CORP·Filed 2005·Granted Nov 3, 2009·18 cites·27 claims
- 0794US7457080B2Perpendicular magnetic recording head, method of manufacturing the same, and magnetic recording apparatusTDK CORP·Filed 2005·Granted Nov 25, 2008·29 cites·16 claims
- 0893US11422166B2Magnetic field detection apparatus and current detection apparatusTDK CORP·Filed 2021·Granted Aug 23, 2022·2 cites·16 claims
- 0993US7974046B2Thin-film magnetic head with heating portion and protrusion adjustment portion, head gimbal assembly equipped head, magnetic recording/reproducing apparatus equipped HGA, and manufacturing method of headTDK CORP·Filed 2007·Granted Jul 5, 2011·17 cites·19 claims
- 1092US12332282B2Magnetic field detection apparatus and current detection apparatusTDK CORP·Filed 2024·Granted Jun 17, 2025·0 cites·13 claims
- 1192US12188996B2Magnetic sensor deviceTDK CORP·Filed 2022·Granted Jan 7, 2025·1 cites·15 claims
- 1292US7245454B2Magnetic head for vertical magnetic recording including main pole layer having varying width and thickness, head gimbal assembly, and hard disk driveTDK CORP·Filed 2004·Granted Jul 17, 2007·44 cites·9 claims
- 1391US7154707B2Thin film magnetic head and magnetic recording apparatusSAE MAGNETICS HK LTD·Filed 2004·Granted Dec 26, 2006·32 cites·9 claims
- 1491US6381104B1Write/read head supporting mechanism, and write/read systemTDK CORP·Filed 1999·Granted Apr 30, 2002·67 cites·23 claims
- 1590US7961429B2Thin-film magnetic head having heating element with lower-resistance portionTDK CORP·Filed 2007·Granted Jun 14, 2011·10 cites·27 claims
- 1690US7391590B2Thin film magnetic head and magnetic recording apparatus with partitioned heat sink layerTDK CORP·Filed 2004·Granted Jun 24, 2008·33 cites·15 claims
- 1790US6920020B2Thin-film merged magnetic head having a heat-generating layerTDK CORP·Filed 2003·Granted Jul 19, 2005·31 cites·14 claims
- 1889US7113369B2Head slider, head gimbal assembly, and hard disk driveTDK CORP·Filed 2004·Granted Sep 26, 2006·26 cites·5 claims
- 1988US2025271471A1Magnetic field detection apparatus and current detection apparatusTDK CORP·Filed 2025·Application pending·0 cites
- 2087US2024192292A1Magnetic sensorTDK CORP·Filed 2024·Application pending·0 cites
- 2186US7633703B2Measuring method of flying height and magnetic disk drive apparatus capable of adjusting flying heightTDK CORP·Filed 2007·Granted Dec 15, 2009·7 cites·17 claims
- 2286US7433152B2Perpendicular magnetic recording head, method of manufacturing the same, and magnetic recording apparatusTDK CORP·Filed 2006·Granted Oct 7, 2008·7 cites·15 claims
- 2385US12379401B2Magnetic field detection apparatus and current detection apparatusTDK CORP·Filed 2023·Granted Aug 5, 2025·0 cites·16 claims
- 2485US7920357B2Magnetic recording method using ferromagnetic resonance and thin-film magnetic head for using the methodTDK CORP·Filed 2007·Granted Apr 5, 2011·6 cites·46 claims
- 2584US7583479B2Thin-film magnetic head with heater in overcoat multilayer, head gimbal assembly with thin-film magnetic head, and magnetic disk drive apparatus with head gimbal assemblyTDK CORP·Filed 2005·Granted Sep 1, 2009·6 cites·32 claims
- 2684US2025085362A1Magnetic sensor deviceTDK CORP·Filed 2024·Application pending·0 cites
- 2782US9153267B1Thermally-assisted magnetic recording head, head gimbals assembly, head arm assembly and magnetic recording unitTDK CORP·Filed 2014·Granted Oct 6, 2015·5 cites·8 claims
- 2882US8867168B2Magnetic head for perpendicular magnetic recording having a write shieldTDK CORP·Filed 2012·Granted Oct 21, 2014·6 cites·23 claims
- 2982US7667928B2Thin-film magnetic head having a width-thickness configured shield layer positioned by spacer pieces for use in a head gimbal assembly of a hard disk systemTDK CORP·Filed 2009·Granted Feb 23, 2010·4 cites·3 claims
- 3082US7203035B2Thin-film magnetic head having a sheet-shaped heater with a lead part connected in series with the heater and having a resistance lower than the heaterTDK CORP·Filed 2004·Granted Apr 10, 2007·16 cites·13 claims
- 3181US7948716B2Magnetic head for perpendicular magnetic recording with a shield and a pole layer having a top surface with first and second portions at different heights, and method of manufacturing sameSAE MAGNETICS HK LTD·Filed 2007·Granted May 24, 2011·5 cites·12 claims
- 3280US11946989B2Magnetic sensor device and magnetic sensor systemTDK CORP·Filed 2023·Granted Apr 2, 2024·0 cites·15 claims
- 3380US8619389B1Magnetic head for perpendicular magnetic recording having a write shieldTDK CORP·Filed 2013·Granted Dec 31, 2013·5 cites·23 claims
- 3479US11959943B2Magnetic field detection apparatus and current detection apparatusTDK CORP·Filed 2022·Granted Apr 16, 2024·0 cites·12 claims
- 3579US11940506B2Magnetic sensorTDK CORP·Filed 2022·Granted Mar 26, 2024·0 cites·15 claims
- 3678US12455302B2Magnetic field detection apparatus and current detection apparatusTDK CORP·Filed 2022·Granted Oct 28, 2025·0 cites·10 claims
- 3778US8559123B2Magnetic recording device, magnetic recording method and magnetic recording medium for shingle write schemeHIRATA KEI·Filed 2010·Granted Oct 15, 2013·4 cites·12 claims
- 3878US7453668B2Thin film magnetic head, method of manufacturing the same, and magnetic recording apparatusTDK CORP·Filed 2005·Granted Nov 18, 2008·4 cites·6 claims
- 3978US7184246B2Thin-film magnetic head having heater member and bump for electrical connection of heater memberTDK CORP·Filed 2004·Granted Feb 27, 2007·12 cites·7 claims
- 4078US6680810B2Head suspension assembly with a precise positioning micro-cap actuator composed of a piezoelectric materialTDK CORP·Filed 2000·Granted Jan 20, 2004·12 cites·12 claims
- 4177US7110219B2Flying type thin-film magnetic headTDK CORP·Filed 2003·Granted Sep 19, 2006·11 cites·9 claims
- 4277US7061719B2Thin film magnetic head and method of manufacturing the sameSAE MAGNETICS HK LTD·Filed 2003·Granted Jun 13, 2006·12 cites·22 claims
- 4376US7843667B2Thin film magnetic head, head gimbal assembly, head arm assembly and magnetic disk deviceTDK CORP·Filed 2007·Granted Nov 30, 2010·3 cites·12 claims
- 4475US8102623B2Thin-film magnetic head with a magnetic pole having an inclined step at its top end section surface, magnetic head assembly with the thin-film magnetic head, magnetic disk drive apparatus with the magnetic head assembly, and manufacturing method of thin-film magnetic headANAGAWA KENKICHI·Filed 2007·Granted Jan 24, 2012·3 cites·12 claims
- 4575US7086931B2Magnetic head bar holding unit, lapping device, and method of lapping medium-opposing surface of thin-film magnetic headSAE MAGNETICS HK LTD·Filed 2004·Granted Aug 8, 2006·17 cites·4 claims
- 4673US7903370B2Thin-film magnetic head with coil-insulating layer that thermal expansion coefficient and young'S modulus are specifiedTDK CORP·Filed 2007·Granted Mar 8, 2011·2 cites·24 claims
- 4773US7102856B2Head slider and manufacturing method thereofTDK CORP·Filed 2004·Granted Sep 5, 2006·9 cites·16 claims
- 4872US11467234B2Magnetic sensorTDK CORP·Filed 2020·Granted Oct 11, 2022·0 cites·13 claims
- 4972US7283328B2Thin-film magnetic head, head gimbal assembly with thin-film magnetic head, magnetic disk drive apparatus with head gimbal assembly, method for designing thin-film magnetic head and manufacturing method of thin-film magnetic headTDK CORP·Filed 2005·Granted Oct 16, 2007·2 cites·14 claims
- 5072US6945847B2Method of lapping medium-opposing surface in thin-film magnetic headTDK CORP·Filed 2004·Granted Sep 20, 2005·8 cites·12 claims
Showing the top 50 of 82 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →