Inventor
UMEHARA TSUYOSHI
JP46 patents
⚠️ This page may combine multiple inventors who share the name “UMEHARA TSUYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TDK CORP
45 patentsUS7623322B2Nov 24, 2009
Thin-film magnetic head with heater spaced further from medium facing surface than split in shield
TDK CORP28 citations92
US6268980B1Jul 31, 2001
Magnetic head apparatus with head IC chip
TDK CORP28 citations92
US6202288B1Mar 20, 2001
Method for manufacturing magnetic head suspension assembly with head IC chip
TDK CORP29 citations92
US6144530ANov 7, 2000
Magnetic head apparatus with head IC chip
TDK CORP33 citations92
US6084746AJul 4, 2000
Magnetic head device
TDK CORP35 citations92
US11360286B2Jun 14, 2022
Magnetic sensor, magnetic encoder, and lens position detection device
TDK CORP8 citations86
US10006789B2Jun 26, 2018
Correction apparatus for angle sensor, and angle sensor
TDK CORP7 citations84
US7545139B2Jun 9, 2009
Testing method and apparatus of thin-film magnetic head
TDK CORP14 citations84
US7359149B2Apr 15, 2008
Composite type thin-film magnetic head with reduced capacitance between leads for read and write head elements
TDK CORP11 citations84
US10712178B2Jul 14, 2020
Position detection device for detecting position of an object moving in a predetermined direction, and a magnetic sensor for use with the position detection device
TDK CORP6 citations83
US6943998B2Sep 13, 2005
Tunnel magnetoresistive effective element, and a thin film magnetic head, a magnetic head device and a magnetic disk drive device using same
TDK CORP10 citations74
US6522502B1Feb 18, 2003
Magnetic head device
TDK CORP6 citations74
US6173485B1Jan 16, 2001
Method for manufacturing magnetic head apparatus with slider and suspension
TDK CORP12 citations74
US11561079B2Jan 24, 2023
Magnetic sensor assembly and camera module having the same
TDK CORP2 citations73
US11674822B2Jun 13, 2023
Position detection device
TDK CORP1 citations72
US11009567B2May 18, 2021
Magnetic sensor and camera module
TDK CORP2 citations72
US10712177B2Jul 14, 2020
Position detection device
TDK CORP4 citations72
US11675028B2Jun 13, 2023
Magnetic sensor, and a current sensor and position detection device using a magnetic sensor
TDK CORP0 citations63
US11506733B2Nov 22, 2022
Magnetic sensor, and a current sensor and position detection device using a magnetic sensor
TDK CORP0 citations63
US6898840B1May 31, 2005
Method of fabricating a magnetic head device
TDK CORP4 citations63
US12467988B2Nov 11, 2025
Magnetic sensor and camera module
TDK CORP0 citations62
US12455177B2Oct 28, 2025
Position detection device
TDK CORP0 citations62
US12352830B2Jul 8, 2025
Sensor unit
TDK CORP0 citations62
US12158510B2Dec 3, 2024
Method of designing and manufacturing magnetic sensor
TDK CORP0 citations62
US12072399B2Aug 27, 2024
Magnetic sensor
TDK CORP0 citations62
US11959979B2Apr 16, 2024
Sensor unit
TDK CORP0 citations62
US11953347B2Apr 9, 2024
Position detection device
TDK CORP0 citations62
US11762044B2Sep 19, 2023
Magnetic sensor
TDK CORP0 citations62
US11630165B2Apr 18, 2023
Sensor unit
TDK CORP0 citations62
US11598827B2Mar 7, 2023
Method of designing and manufacturing magnetic sensor
TDK CORP0 citations62
US11519978B2Dec 6, 2022
Magnetic sensor and camera module
TDK CORP0 citations62
US11408950B2Aug 9, 2022
Magnetic sensor
TDK CORP0 citations62
US11313920B2Apr 26, 2022
Sensor unit
TDK CORP0 citations62
US11215478B2Jan 4, 2022
Magnetic sensor and position detection device
TDK CORP0 citations62
US11204263B2Dec 21, 2021
Position detection device for detecting position of an object moving in a predetermined direction, and a magnetic sensor for use with the position detection device
TDK CORP1 citations62
US7911745B2Mar 22, 2011
Thin-film magnetic head comprising a magneto-resistive effect device of the CPP structure including a re-magnetizing bias layer and magnetic disk system
TDK CORP3 citations62
US7583479B2Sep 1, 2009
Thin-film magnetic head with heater in overcoat multilayer, head gimbal assembly with thin-film magnetic head, and magnetic disk drive apparatus with head gimbal assembly
TDK CORP6 citations62
US10254135B2Apr 9, 2019
Correction apparatus and method for angle sensor, and angle sensor
TDK CORP1 citations61
US7384327B2Jun 10, 2008
Method for grinding a bar of thin film magnetic elements utilizing a plurality of resistive films
TDK CORP6 citations61
US12228623B2Feb 18, 2025
Magnetic sensor, magnetic encoder, lens position detection device, distance measuring device, and manufacturing method for magnetic sensor
TDK CORP0 citations52
US11703358B2Jul 18, 2023
Magnetic sensor, magnetic encoder, and lens position detection device
TDK CORP0 citations52
US10830614B2Nov 10, 2020
Magnetic sensor and position detection device
TDK CORP0 citations52
US11486734B2Nov 1, 2022
Magnetic sensor system and lens position detection device
TDK CORP0 citations51
US10634734B2Apr 28, 2020
Sensor unit
TDK CORP0 citations51
US10498198B2Dec 3, 2019
Magnetic sensor
TDK CORP0 citations41