Yongfu CAI

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Position detection device
- Patent number 12,215,988
- Issue date Feb 4, 2025
- TDK Corporation
- Keisuke Uchida
- G01 - MEASURING TESTING
Information Patent Grant
Position detection unit, lens module, and imaging apparatus
- Patent number 12,188,787
- Issue date Jan 7, 2025
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Grant
Position detection unit, lens module, and imaging apparatus
- Patent number 12,174,045
- Issue date Dec 24, 2024
- TDK Corporation
- Yongfu Cai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Magnetic sensor device having magnetic field converter, magnetic fi...
- Patent number 12,072,398
- Issue date Aug 27, 2024
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Grant
Assembly of stacked elements and method of producing the same
- Patent number 12,046,524
- Issue date Jul 23, 2024
- TDK Corporation
- Yongfu Cai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Angle sensor system
- Patent number 12,007,236
- Issue date Jun 11, 2024
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Grant
Position detection device
- Patent number 11,898,886
- Issue date Feb 13, 2024
- TDK Corporation
- Keisuke Uchida
- G01 - MEASURING TESTING
Information Patent Grant
Magnetic sensor device with a magnetic field converter, a magnetic...
- Patent number 11,747,410
- Issue date Sep 5, 2023
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Grant
Position detection device, camera module, and rotary actuator
- Patent number 11,719,556
- Issue date Aug 8, 2023
- TDK Corporation
- Yongfu Cai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Magnetic sensor, magnetic encoder, and lens position detection device
- Patent number 11,703,358
- Issue date Jul 18, 2023
- TDK Corporation
- Tsuyoshi Umehara
- G01 - MEASURING TESTING
Information Patent Grant
Magnetism detection device
- Patent number 11,650,272
- Issue date May 16, 2023
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Grant
Position detection unit, lens module, and imaging apparatus
- Patent number 11,614,342
- Issue date Mar 28, 2023
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Grant
Magnetic sensor, magnetic encoder, and lens position detection device
- Patent number 11,585,872
- Issue date Feb 21, 2023
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Grant
Electronic component package
- Patent number 11,569,143
- Issue date Jan 31, 2023
- TDK Corporation
- Yongfu Cai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Magnetic sensor and position detection device
- Patent number 11,555,869
- Issue date Jan 17, 2023
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Grant
Method of correcting position detecting signal and position detecti...
- Patent number 11,553,132
- Issue date Jan 10, 2023
- TDK Corporation
- Yongfu Cai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Magnetic sensor device
- Patent number 11,493,570
- Issue date Nov 8, 2022
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Grant
Magnetic sensor system and lens position detection device
- Patent number 11,486,734
- Issue date Nov 1, 2022
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Grant
Magnetic sensor device
- Patent number 11,474,168
- Issue date Oct 18, 2022
- TDK Corporation
- Naoki Ohta
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Position detection device
- Patent number 11,428,545
- Issue date Aug 30, 2022
- TDK Corporation
- Keisuke Uchida
- G01 - MEASURING TESTING
Information Patent Grant
Angle sensor system
- Patent number 11,359,908
- Issue date Jun 14, 2022
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Grant
Magnetic sensor, magnetic encoder, and lens position detection device
- Patent number 11,360,286
- Issue date Jun 14, 2022
- TDK Corporation
- Yongfu Cai
- G02 - OPTICS
Information Patent Grant
Magnetic sensor device
- Patent number 11,340,319
- Issue date May 24, 2022
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Grant
Assembly of stacked elements and method of producing the same
- Patent number 11,322,418
- Issue date May 3, 2022
- TDK Corporation
- Yongfu Cai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Position detection device
- Patent number 11,274,942
- Issue date Mar 15, 2022
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Grant
Magnetic sensor device
- Patent number 11,175,357
- Issue date Nov 16, 2021
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Grant
Magnetic sensor device
- Patent number 11,143,720
- Issue date Oct 12, 2021
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Grant
Magnetic sensor device
- Patent number 11,131,727
- Issue date Sep 28, 2021
- TDK Corporation
- Naoki Ohta
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Magnetic sensor and position detection device
- Patent number 11,125,839
- Issue date Sep 21, 2021
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Grant
Magnetism detection device
- Patent number 10,996,291
- Issue date May 4, 2021
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
POSITION DETECTION DEVICE, KEY SWITCH, KEYBOARD, MOUSE, AND GAME CO...
- Publication number 20250035468
- Publication date Jan 30, 2025
- TDK Corporation
- Yongfu CAI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
ASSEMBLY OF STACKED ELEMENTS AND METHOD OF PRODUCING THE SAME
- Publication number 20240332103
- Publication date Oct 3, 2024
- TDK Corporation
- Yongfu CAI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
POSITION DETECTION DEVICE
- Publication number 20240230376
- Publication date Jul 11, 2024
- TDK Corporation
- Keisuke UCHIDA
- G01 - MEASURING TESTING
Information Patent Application
POSITION DETECTION DEVICE
- Publication number 20240133715
- Publication date Apr 25, 2024
- TDK Corporation
- Keisuke UCHIDA
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC SENSOR, MAGNETIC ENCODER, AND MANUFACTURING METHOD FOR MAG...
- Publication number 20240068846
- Publication date Feb 29, 2024
- TDK Corporation
- Yongfu CAI
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC SENSOR, ROTATION ANGLE DETECTION APPARATUS, AND BRAKE SYST...
- Publication number 20240027548
- Publication date Jan 25, 2024
- TDK Corporation
- Yongfu CAI
- B60 - VEHICLES IN GENERAL
Information Patent Application
MAGNETIC SENSOR DEVICE AND MAGNETIC ENCODER
- Publication number 20240019507
- Publication date Jan 18, 2024
- TDK Corporation
- Yongfu CAI
- G01 - MEASURING TESTING
Information Patent Application
POSITION DETECTION DEVICE, LENS MODULE, IMAGING APPARATUS, AND DIST...
- Publication number 20230350062
- Publication date Nov 2, 2023
- TDK Corporation
- Yongfu CAI
- G01 - MEASURING TESTING
Information Patent Application
POSITION DETECTION DEVICE, CAMERA MODULE, AND ROTARY ACTUATOR
- Publication number 20230332929
- Publication date Oct 19, 2023
- TDK Corporation
- Yongfu CAI
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC SENSOR DEVICE
- Publication number 20230324478
- Publication date Oct 12, 2023
- TDK Corporation
- Yongfu CAI
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC ENCODER AND DISTANCE MEASURING DEVICE
- Publication number 20230314178
- Publication date Oct 5, 2023
- TDK Corporation
- Yongfu CAI
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC SENSOR, MAGNETIC ENCODER, LENS POSITION DETECTION DEVICE,...
- Publication number 20230280419
- Publication date Sep 7, 2023
- TDK Corporation
- Tsuyoshi UMEHARA
- G01 - MEASURING TESTING
Information Patent Application
MAGNETISM DETECTION DEVICE
- Publication number 20230251334
- Publication date Aug 10, 2023
- TDK Corporation
- Yongfu CAI
- G01 - MEASURING TESTING
Information Patent Application
ELECTRONIC COMPONENT PACKAGE
- Publication number 20230140621
- Publication date May 4, 2023
- TDK Corporation
- Yongfu CAI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
POSITION DETECTION DEVICE
- Publication number 20220357182
- Publication date Nov 10, 2022
- TDK Corporation
- Keisuke UCHIDA
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC SENSOR, MAGNETIC ENCODER, AND LENS POSITION DETECTION DEVICE
- Publication number 20220333953
- Publication date Oct 20, 2022
- TDK Corporation
- Tsuyoshi UMEHARA
- G01 - MEASURING TESTING
Information Patent Application
ANGLE SENSOR SYSTEM
- Publication number 20220268564
- Publication date Aug 25, 2022
- TDK Corporation
- Yongfu CAI
- G01 - MEASURING TESTING
Information Patent Application
ASSEMBLY OF STACKED ELEMENTS AND METHOD OF PRODUCING THE SAME
- Publication number 20220208627
- Publication date Jun 30, 2022
- TDK Corporation
- Yongfu CAI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
POSITION DETECTION UNIT, LENS MODULE, AND IMAGING APPARATUS
- Publication number 20220090940
- Publication date Mar 24, 2022
- TDK Corporation
- Yongfu CAI
- G02 - OPTICS
Information Patent Application
MAGNETIC SENSOR SYSTEM AND LENS POSITION DETECTION DEVICE
- Publication number 20220042826
- Publication date Feb 10, 2022
- TDK Corporation
- Yongfu CAI
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC SENSOR DEVICE
- Publication number 20210405133
- Publication date Dec 30, 2021
- TDK Corporation
- Yongfu Cai
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC SENSOR DEVICE
- Publication number 20210382124
- Publication date Dec 9, 2021
- TDK Corporation
- Naoki OHTA
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC SENSOR AND POSITION DETECTION DEVICE
- Publication number 20210382121
- Publication date Dec 9, 2021
- TDK Corporation
- Yongfu CAI
- G01 - MEASURING TESTING
Information Patent Application
POSITION DETECTION UNIT, LENS MODULE, AND IMAGING APPARATUS
- Publication number 20210372819
- Publication date Dec 2, 2021
- TDK Corporation
- Yongfu CAI
- G02 - OPTICS
Information Patent Application
MAGNETIC SENSOR, MAGNETIC ENCODER, AND LENS POSITION DETECTION DEVICE
- Publication number 20210325486
- Publication date Oct 21, 2021
- TDK Corporation
- Yongfu CAI
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC SENSOR, MAGNETIC ENCODER, AND LENS POSITION DETECTION DEVICE
- Publication number 20210318513
- Publication date Oct 14, 2021
- TDK Corporation
- Yongfu CAI
- G01 - MEASURING TESTING
Information Patent Application
POSITION DETECTION UNIT, LENS MODULE, AND IMAGING APPARATUS
- Publication number 20210255001
- Publication date Aug 19, 2021
- TDK Corporation
- Yongfu CAI
- G01 - MEASURING TESTING
Information Patent Application
POSITION DETECTION DEVICE, CAMERA MODULE, AND ROTARY ACTUATOR
- Publication number 20210255000
- Publication date Aug 19, 2021
- TDK Corporation
- Yongfu CAI
- G01 - MEASURING TESTING
Information Patent Application
MAGNETISM DETECTION DEVICE
- Publication number 20210231755
- Publication date Jul 29, 2021
- TDK Corporation
- Yongfu CAI
- G01 - MEASURING TESTING
Information Patent Application
METHOD OF CORRECTING POSITION DETECTING SIGNAL AND POSITION DETECTI...
- Publication number 20210203852
- Publication date Jul 1, 2021
- TDK Corporation
- Yongfu CAI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Person

Patents Grantslast 30 patents

Position detection device

Position detection unit, lens module, and imaging apparatus

Position detection unit, lens module, and imaging apparatus

Magnetic sensor device having magnetic field converter, magnetic fi...

Assembly of stacked elements and method of producing the same

Angle sensor system

Position detection device

Magnetic sensor device with a magnetic field converter, a magnetic...

Position detection device, camera module, and rotary actuator

Magnetic sensor, magnetic encoder, and lens position detection device

Magnetism detection device

Position detection unit, lens module, and imaging apparatus

Magnetic sensor, magnetic encoder, and lens position detection device

Electronic component package

Magnetic sensor and position detection device

Method of correcting position detecting signal and position detecti...

Magnetic sensor device

Magnetic sensor system and lens position detection device

Magnetic sensor device

Position detection device

Angle sensor system

Magnetic sensor, magnetic encoder, and lens position detection device

Magnetic sensor device

Assembly of stacked elements and method of producing the same

Position detection device

Magnetic sensor device

Magnetic sensor device

Magnetic sensor device

Magnetic sensor and position detection device

Magnetism detection device

Patents Applicationslast 30 patents

POSITION DETECTION DEVICE, KEY SWITCH, KEYBOARD, MOUSE, AND GAME CO...

ASSEMBLY OF STACKED ELEMENTS AND METHOD OF PRODUCING THE SAME

POSITION DETECTION DEVICE

POSITION DETECTION DEVICE

MAGNETIC SENSOR, MAGNETIC ENCODER, AND MANUFACTURING METHOD FOR MAG...

MAGNETIC SENSOR, ROTATION ANGLE DETECTION APPARATUS, AND BRAKE SYST...

MAGNETIC SENSOR DEVICE AND MAGNETIC ENCODER

POSITION DETECTION DEVICE, LENS MODULE, IMAGING APPARATUS, AND DIST...

POSITION DETECTION DEVICE, CAMERA MODULE, AND ROTARY ACTUATOR

MAGNETIC SENSOR DEVICE

MAGNETIC ENCODER AND DISTANCE MEASURING DEVICE

MAGNETIC SENSOR, MAGNETIC ENCODER, LENS POSITION DETECTION DEVICE,...

MAGNETISM DETECTION DEVICE

ELECTRONIC COMPONENT PACKAGE

POSITION DETECTION DEVICE

MAGNETIC SENSOR, MAGNETIC ENCODER, AND LENS POSITION DETECTION DEVICE

ANGLE SENSOR SYSTEM

ASSEMBLY OF STACKED ELEMENTS AND METHOD OF PRODUCING THE SAME

POSITION DETECTION UNIT, LENS MODULE, AND IMAGING APPARATUS

MAGNETIC SENSOR SYSTEM AND LENS POSITION DETECTION DEVICE

MAGNETIC SENSOR DEVICE

MAGNETIC SENSOR DEVICE

MAGNETIC SENSOR AND POSITION DETECTION DEVICE

POSITION DETECTION UNIT, LENS MODULE, AND IMAGING APPARATUS

MAGNETIC SENSOR, MAGNETIC ENCODER, AND LENS POSITION DETECTION DEVICE

MAGNETIC SENSOR, MAGNETIC ENCODER, AND LENS POSITION DETECTION DEVICE

POSITION DETECTION UNIT, LENS MODULE, AND IMAGING APPARATUS

POSITION DETECTION DEVICE, CAMERA MODULE, AND ROTARY ACTUATOR

MAGNETISM DETECTION DEVICE

METHOD OF CORRECTING POSITION DETECTING SIGNAL AND POSITION DETECTI...