Inventor · disambiguated record
Yongfu Cai
Also filed as: CAI YONGFU
36 granted patents·7 pending applications·33 citations·filing 2019–2025
95Inventor score
Files withTDK CORP43
Top patents by PatentIndex Score
43 records- 0198US11360286B2Magnetic sensor, magnetic encoder, and lens position detection deviceTDK CORP·Filed 2021·Granted Jun 14, 2022·8 cites·15 claims
- 0294US11614342B2Position detection unit, lens module, and imaging apparatusTDK CORP·Filed 2021·Granted Mar 28, 2023·3 cites·20 claims
- 0391US11125839B2Magnetic sensor and position detection deviceTDK CORP·Filed 2019·Granted Sep 21, 2021·4 cites·15 claims
- 0490US12345783B2Magnetic sensor device and magnetic encoderTDK CORP·Filed 2023·Granted Jul 1, 2025·1 cites·20 claims
- 0590US11747410B2Magnetic sensor device with a magnetic field converter, a magnetic detector, and a magnetic shieldTDK CORP·Filed 2020·Granted Sep 5, 2023·2 cites·10 claims
- 0690US11719556B2Position detection device, camera module, and rotary actuatorTDK CORP·Filed 2020·Granted Aug 8, 2023·2 cites·15 claims
- 0790US10996291B2Magnetism detection deviceTDK CORP·Filed 2019·Granted May 4, 2021·3 cites·27 claims
- 0889US11428545B2Position detection deviceTDK CORP·Filed 2020·Granted Aug 30, 2022·2 cites·11 claims
- 0989US2025370073A1Magnetic sensor, rotation angle detection apparatus, and brake system using rotation angle detection apparatusTDK CORP·Filed 2025·Application pending·0 cites
- 1088US2025123124A1Position detection deviceTDK CORP·Filed 2024·Application pending·0 cites
- 1186US12215988B2Position detection deviceTDK CORP·Filed 2024·Granted Feb 4, 2025·0 cites·10 claims
- 1286US11569143B2Electronic component packageTDK CORP·Filed 2019·Granted Jan 31, 2023·4 cites·17 claims
- 1386US11274942B2Position detection deviceTDK CORP·Filed 2020·Granted Mar 15, 2022·2 cites·6 claims
- 1484US12438008B2Method of producing assembly of stacked elements having resin layer with fillersTDK CORP·Filed 2024·Granted Oct 7, 2025·0 cites·18 claims
- 1584US11650272B2Magnetism detection deviceTDK CORP·Filed 2021·Granted May 16, 2023·1 cites·22 claims
- 1683US2025349636A1Electronic component packageTDK CORP·Filed 2025·Application pending·0 cites
- 1780US12385990B2Magnetism detection deviceTDK CORP·Filed 2023·Granted Aug 12, 2025·0 cites·15 claims
- 1880US11898886B2Position detection deviceTDK CORP·Filed 2022·Granted Feb 13, 2024·0 cites·18 claims
- 1979US12072398B2Magnetic sensor device having magnetic field converter, magnetic field detector, and magnetic shieldTDK CORP·Filed 2023·Granted Aug 27, 2024·0 cites·14 claims
- 2079US11359908B2Angle sensor systemTDK CORP·Filed 2019·Granted Jun 14, 2022·1 cites·13 claims
- 2178US12411191B2Magnetic sensor, rotation angle detection apparatus, and brake system using rotation angle detection apparatusTDK CORP·Filed 2023·Granted Sep 9, 2025·0 cites·14 claims
- 2276US12228623B2Magnetic 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
- 2376US2025155529A1Magnetic sensor, magnetic encoder, lens position detection device, distance measuring device, and manufacturing method for magnetic sensorTDK CORP·Filed 2025·Application pending·0 cites
- 2475US12046524B2Assembly of stacked elements and method of producing the sameTDK CORP·Filed 2022·Granted Jul 23, 2024·0 cites·14 claims
- 2574US12400922B2Electronic component packageTDK CORP·Filed 2022·Granted Aug 26, 2025·0 cites·27 claims
- 2673US12007236B2Angle sensor systemTDK CORP·Filed 2022·Granted Jun 11, 2024·0 cites·15 claims
- 2773US11493570B2Magnetic sensor deviceTDK CORP·Filed 2021·Granted Nov 8, 2022·0 cites·16 claims
- 2873US11474168B2Magnetic sensor deviceTDK CORP·Filed 2021·Granted Oct 18, 2022·0 cites·17 claims
- 2971US11555869B2Magnetic sensor and position detection deviceTDK CORP·Filed 2021·Granted Jan 17, 2023·0 cites·15 claims
- 3069US11175357B2Magnetic sensor deviceTDK CORP·Filed 2020·Granted Nov 16, 2021·0 cites·8 claims
- 3167US11131727B2Magnetic sensor deviceTDK CORP·Filed 2019·Granted Sep 28, 2021·0 cites·13 claims
- 3263US2025035468A1Position detection device, key switch, keyboard, mouse, and game controllerTDK CORP·Filed 2024·Application pending·0 cites
- 3362US11322418B2Assembly of stacked elements and method of producing the sameTDK CORP·Filed 2019·Granted May 3, 2022·0 cites·12 claims
- 3461US11585872B2Magnetic sensor, magnetic encoder, and lens position detection deviceTDK CORP·Filed 2021·Granted Feb 21, 2023·0 cites·17 claims
- 3559US11703358B2Magnetic sensor, magnetic encoder, and lens position detection deviceTDK CORP·Filed 2022·Granted Jul 18, 2023·0 cites·16 claims
- 3658US12332093B2Magnetic sensor, magnetic encoder, and manufacturing method for magnetic sensorTDK CORP·Filed 2023·Granted Jun 17, 2025·0 cites·16 claims
- 3758US12174045B2Position detection unit, lens module, and imaging apparatusTDK CORP·Filed 2021·Granted Dec 24, 2024·0 cites·6 claims
- 3856US11553132B2Method of correcting position detecting signal and position detecting deviceTDK CORP·Filed 2020·Granted Jan 10, 2023·0 cites·10 claims
- 3956US11486734B2Magnetic sensor system and lens position detection deviceTDK CORP·Filed 2021·Granted Nov 1, 2022·0 cites·15 claims
- 4056US2023314178A1Magnetic encoder and distance measuring deviceTDK CORP·Filed 2023·Application pending·0 cites
- 4148US12188787B2Position detection unit, lens module, and imaging apparatusTDK CORP·Filed 2021·Granted Jan 7, 2025·0 cites·16 claims
- 4247US11340319B2Magnetic sensor deviceTDK CORP·Filed 2019·Granted May 24, 2022·0 cites·7 claims
- 4341US2020294876A1Electronic device having product information and method for reading the product informationTDK CORP·Filed 2019·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →