Inventor
OKA TEIICHIRO
JP12 patents
Patents
12 patentsUS7569801B2Aug 4, 2009
Optical head, optical reproducing apparatus, and optical recording and reproducing apparatus
TDK CORP15 citations81
US11353526B2Jun 7, 2022
Rotational angle detection device
TDK CORP2 citations72
US11519940B2Dec 6, 2022
Current sensor
TDK CORP0 citations61
US7177242B2Feb 13, 2007
Condenser with first and second photodetectors with three sections each and having focal points before and after the surface of detectors
TDK CORP2 citations61
US11125785B2Sep 21, 2021
Sensor for detecting temperatures
TDK CORP0 citations60
US12435997B2Oct 7, 2025
Magnetic field detection device, magnetic sensor module, magnetic control device, motor and transmission
TDK CORP0 citations51
US11099033B2Aug 24, 2021
Position detection system
TDK CORP0 citations51
US7482573B2Jan 27, 2009
Optical head, optical reproduction apparatus and optical record and reproduction apparatus
TDK CORP1 citations51
US11525661B2Dec 13, 2022
Magnetic unit, position detection apparatus, and magnetic member
TDK CORP0 citations50
US10877108B2Dec 29, 2020
Sensor intermediate part, sensor and sensor manufacturing method
TDK CORP0 citations50
US10794967B2Oct 6, 2020
Sensor intermediate part, sensor and sensor manufacturing method
TDK CORP0 citations50
US7447139B2Nov 4, 2008
Light-receiving element, optical head, optical recording/reproducing apparatus, and method of optical recording and reproduction
TDK CORP0 citations41