Inventor
CAI YONGFU
JP38 patents
Patents
38 patentsUS11360286B2Jun 14, 2022
Magnetic sensor, magnetic encoder, and lens position detection device
TDK CORP8 citations86
US11747410B2Sep 5, 2023
Magnetic sensor device with a magnetic field converter, a magnetic detector, and a magnetic shield
TDK CORP2 citations73
US11719556B2Aug 8, 2023
Position detection device, camera module, and rotary actuator
TDK CORP2 citations73
US11614342B2Mar 28, 2023
Position detection unit, lens module, and imaging apparatus
TDK CORP3 citations73
US11569143B2Jan 31, 2023
Electronic component package
TDK CORP4 citations73
US11428545B2Aug 30, 2022
Position detection device
TDK CORP2 citations73
US11274942B2Mar 15, 2022
Position detection device
TDK CORP2 citations73
US11125839B2Sep 21, 2021
Magnetic sensor and position detection device
TDK CORP4 citations73
US11650272B2May 16, 2023
Magnetism detection device
TDK CORP1 citations71
US10996291B2May 4, 2021
Magnetism detection device
TDK CORP3 citations71
US12345783B2Jul 1, 2025
Magnetic sensor device and magnetic encoder
TDK CORP1 citations64
US12571656B2Mar 10, 2026
Position detection device, camera module, and rotary actuator
TDK CORP0 citations62
US12517248B2Jan 6, 2026
Position detection device, lens module, imaging apparatus, and distance measurement apparatus
TDK CORP0 citations62
US12215988B2Feb 4, 2025
Position detection device
TDK CORP0 citations62
US12072398B2Aug 27, 2024
Magnetic sensor device having magnetic field converter, magnetic field detector, and magnetic shield
TDK CORP0 citations62
US12007236B2Jun 11, 2024
Angle sensor system
TDK CORP0 citations62
US11898886B2Feb 13, 2024
Position detection device
TDK CORP0 citations62
US11585872B2Feb 21, 2023
Magnetic sensor, magnetic encoder, and lens position detection device
TDK CORP0 citations62
US11555869B2Jan 17, 2023
Magnetic sensor and position detection device
TDK CORP0 citations62
US11493570B2Nov 8, 2022
Magnetic sensor device
TDK CORP0 citations62
US11474168B2Oct 18, 2022
Magnetic sensor device
TDK CORP0 citations62
US11359908B2Jun 14, 2022
Angle sensor system
TDK CORP1 citations62
US11175357B2Nov 16, 2021
Magnetic sensor device
TDK CORP0 citations62
US11131727B2Sep 28, 2021
Magnetic sensor device
TDK CORP0 citations62
US12438008B2Oct 7, 2025
Method of producing assembly of stacked elements having resin layer with fillers
TDK CORP0 citations61
US12400922B2Aug 26, 2025
Electronic component package
TDK CORP0 citations61
US12385990B2Aug 12, 2025
Magnetism detection device
TDK CORP0 citations61
US12046524B2Jul 23, 2024
Assembly of stacked elements and method of producing the same
TDK CORP0 citations61
US11322418B2May 3, 2022
Assembly of stacked elements and method of producing the same
TDK CORP0 citations61
US12411191B2Sep 9, 2025
Magnetic sensor, rotation angle detection apparatus, and brake system using rotation angle detection apparatus
TDK CORP0 citations52
US12332093B2Jun 17, 2025
Magnetic sensor, magnetic encoder, and manufacturing method for magnetic sensor
TDK CORP0 citations52
US12228623B2Feb 18, 2025
Magnetic sensor, magnetic encoder, lens position detection device, distance measuring device, and manufacturing method for magnetic sensor
TDK CORP0 citations52
US12188787B2Jan 7, 2025
Position detection unit, lens module, and imaging apparatus
TDK CORP0 citations52
US12174045B2Dec 24, 2024
Position detection unit, lens module, and imaging apparatus
TDK CORP0 citations52
US11703358B2Jul 18, 2023
Magnetic sensor, magnetic encoder, and lens position detection device
TDK CORP0 citations52
US11340319B2May 24, 2022
Magnetic sensor device
TDK CORP0 citations52
US11553132B2Jan 10, 2023
Method of correcting position detecting signal and position detecting device
TDK CORP0 citations51
US11486734B2Nov 1, 2022
Magnetic sensor system and lens position detection device
TDK CORP0 citations51