Inventor · disambiguated record
Tsuyoshi Umehara
Also filed as: UMEHARA TSUYOSHI
46 granted patents·5 pending applications·257 citations·filing 1998–2025
97Inventor score
Top patents by PatentIndex Score
51 records- 0198US11360286B2Magnetic sensor, magnetic encoder, and lens position detection deviceTDK CORP·Filed 2021·Granted Jun 14, 2022·8 cites·15 claims
- 0294US10712178B2Position detection device for detecting position of an object moving in a predetermined direction, and a magnetic sensor for use with the position detection deviceTDK CORP·Filed 2018·Granted Jul 14, 2020·6 cites·15 claims
- 0394US7623322B2Thin-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
- 0493US10712177B2Position detection deviceTDK CORP·Filed 2018·Granted Jul 14, 2020·4 cites·10 claims
- 0593US10006789B2Correction apparatus for angle sensor, and angle sensorTDK CORP·Filed 2017·Granted Jun 26, 2018·7 cites·21 claims
- 0692US11561079B2Magnetic sensor assembly and camera module having the sameTDK CORP·Filed 2021·Granted Jan 24, 2023·2 cites·19 claims
- 0789US7359149B2Composite type thin-film magnetic head with reduced capacitance between leads for read and write head elementsTDK CORP·Filed 2005·Granted Apr 15, 2008·11 cites·5 claims
- 0889US2025298095A1Sensor unitTDK CORP·Filed 2025·Application pending·0 cites
- 0987US12455177B2Position detection deviceTDK CORP·Filed 2024·Granted Oct 28, 2025·0 cites·14 claims
- 1087US12352830B2Sensor unitTDK CORP·Filed 2024·Granted Jul 8, 2025·0 cites·5 claims
- 1187US2024377484A1Magnetic sensorTDK CORP·Filed 2024·Application pending·0 cites
- 1286US11009567B2Magnetic sensor and camera moduleTDK CORP·Filed 2018·Granted May 18, 2021·2 cites·17 claims
- 1386US7545139B2Testing method and apparatus of thin-film magnetic headTDK CORP·Filed 2007·Granted Jun 9, 2009·14 cites·20 claims
- 1484US12072399B2Magnetic sensorTDK CORP·Filed 2023·Granted Aug 27, 2024·0 cites·17 claims
- 1584US7583479B2Thin-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
- 1683US11959979B2Sensor unitTDK CORP·Filed 2023·Granted Apr 16, 2024·0 cites·11 claims
- 1783US11953347B2Position detection deviceTDK CORP·Filed 2023·Granted Apr 9, 2024·0 cites·17 claims
- 1883US11674822B2Position detection deviceTDK CORP·Filed 2020·Granted Jun 13, 2023·1 cites·22 claims
- 1983US11204263B2Position detection device for detecting position of an object moving in a predetermined direction, and a magnetic sensor for use with the position detection deviceTDK CORP·Filed 2020·Granted Dec 21, 2021·1 cites·9 claims
- 2083US7384327B2Method for grinding a bar of thin film magnetic elements utilizing a plurality of resistive filmsTDK CORP·Filed 2005·Granted Jun 10, 2008·6 cites·16 claims
- 2182US6084746AMagnetic head deviceTDK CORP·Filed 1998·Granted Jul 4, 2000·35 cites·16 claims
- 2280US6144530AMagnetic head apparatus with head IC chipTDK CORP·Filed 1998·Granted Nov 7, 2000·33 cites·12 claims
- 2379US12467988B2Magnetic sensor and camera moduleTDK CORP·Filed 2022·Granted Nov 11, 2025·0 cites·13 claims
- 2479US11762044B2Magnetic sensorTDK CORP·Filed 2022·Granted Sep 19, 2023·0 cites·11 claims
- 2579US11630165B2Sensor unitTDK CORP·Filed 2022·Granted Apr 18, 2023·0 cites·26 claims
- 2678US11675028B2Magnetic sensor, and a current sensor and position detection device using a magnetic sensorTDK CORP·Filed 2022·Granted Jun 13, 2023·0 cites·19 claims
- 2778US6202288B1Method for manufacturing magnetic head suspension assembly with head IC chipTDK CORP·Filed 1999·Granted Mar 20, 2001·29 cites·28 claims
- 2876US12228623B2Magnetic sensor, magnetic encoder, lens position detection device, distance measuring device, and manufacturing method for magnetic sensorTDK CORP·Filed 2023·Granted Feb 18, 2025·0 cites·18 claims
- 2976US12158510B2Method of designing and manufacturing magnetic sensorTDK CORP·Filed 2023·Granted Dec 3, 2024·0 cites·15 claims
- 3076US2025155529A1Magnetic sensor, magnetic encoder, lens position detection device, distance measuring device, and manufacturing method for magnetic sensorTDK CORP·Filed 2025·Application pending·0 cites
- 3175US6943998B2Tunnel magnetoresistive effective element, and a thin film magnetic head, a magnetic head device and a magnetic disk drive device using sameTDK CORP·Filed 2001·Granted Sep 13, 2005·10 cites·17 claims
- 3273US11519978B2Magnetic sensor and camera moduleTDK CORP·Filed 2021·Granted Dec 6, 2022·0 cites·11 claims
- 3373US11408950B2Magnetic sensorTDK CORP·Filed 2020·Granted Aug 9, 2022·0 cites·20 claims
- 3472US11313920B2Sensor unitTDK CORP·Filed 2020·Granted Apr 26, 2022·0 cites·23 claims
- 3571US11598827B2Method of designing and manufacturing magnetic sensorTDK CORP·Filed 2021·Granted Mar 7, 2023·0 cites·8 claims
- 3671US11506733B2Magnetic sensor, and a current sensor and position detection device using a magnetic sensorTDK CORP·Filed 2021·Granted Nov 22, 2022·0 cites·20 claims
- 3771US6522502B1Magnetic head deviceTDK CORP·Filed 2000·Granted Feb 18, 2003·6 cites·2 claims
- 3869US6268980B1Magnetic head apparatus with head IC chipTDK CORP·Filed 1998·Granted Jul 31, 2001·28 cites·8 claims
- 3965US11215478B2Magnetic sensor and position detection deviceTDK CORP·Filed 2020·Granted Jan 4, 2022·0 cites·17 claims
- 4064US10830614B2Magnetic sensor and position detection deviceTDK CORP·Filed 2018·Granted Nov 10, 2020·0 cites·17 claims
- 4164US10634734B2Sensor unitTDK CORP·Filed 2017·Granted Apr 28, 2020·0 cites·19 claims
- 4263US2025035468A1Position detection device, key switch, keyboard, mouse, and game controllerTDK CORP·Filed 2024·Application pending·0 cites
- 4362US10254135B2Correction apparatus and method for angle sensor, and angle sensorTDK CORP·Filed 2016·Granted Apr 9, 2019·1 cites·29 claims
- 4459US11703358B2Magnetic sensor, magnetic encoder, and lens position detection deviceTDK CORP·Filed 2022·Granted Jul 18, 2023·0 cites·16 claims
- 4559US7911745B2Thin-film magnetic head comprising a magneto-resistive effect device of the CPP structure including a re-magnetizing bias layer and magnetic disk systemTDK CORP·Filed 2007·Granted Mar 22, 2011·3 cites·14 claims
- 4657US6173485B1Method for manufacturing magnetic head apparatus with slider and suspensionTDK CORP·Filed 1998·Granted Jan 16, 2001·12 cites·21 claims
- 4756US11486734B2Magnetic sensor system and lens position detection deviceTDK CORP·Filed 2021·Granted Nov 1, 2022·0 cites·15 claims
- 4855US6898840B1Method of fabricating a magnetic head deviceTDK CORP·Filed 2000·Granted May 31, 2005·4 cites·12 claims
- 4949US10498198B2Magnetic sensorTDK CORP·Filed 2017·Granted Dec 3, 2019·0 cites·13 claims
- 5047US8305709B2Perpendicular magnetic head and magnetic recording system having non-magnetic region in shield layerOTA NORIKAZU·Filed 2008·Granted Nov 6, 2012·0 cites·14 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →