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Class Information
Number: 324/249
Name: Electricity: measuring and testing > Magnetic > Magnetometers > Thin film magnetometers
Description: Subject matter wherein the apparatus to sense a magnetic field includes a thin single domain ferromagnetic film magnetized in a predetermined direction known as the easy axis of the film, the magnetization of the film upon placement in an external magnetic field to be tested assumes a different direction which is the resultant field vector of the film"s easy axis and the tested field axis, means to cyclically change the resultant magnetic field axis of the film, sensing means to note the cyclical changes in the magnetic field of the film caused by the shift of the resultant magnetic field due to the means to cyclically change the resultant magnetic field axis, and the apparatus to indicate being connected to the sensing means to note the result of the cyclical changes in the film.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8710835 Magnetic impedance element and magnetic sensor using the same Apr. 29, 2014
8680854 Semiconductor GMI magnetometer Mar. 25, 2014
8664950 Method for measuring longitudinal bias magnetic field in a tunnel magnetoresistive sensor Mar. 4, 2014
8633688 Integrated magnetic sensor for detecting horizontal magnetic fields and manufacturing process thereof Jan. 21, 2014
8552721 Hall sensor array Oct. 8, 2013
8508221 Two-axis magnetic field sensor having reduced compensation angle for zero offset Aug. 13, 2013
8466675 Detection apparatus and detection method for a magnetic substance having a trap region and a non-trap region Jun. 18, 2013
8455962 Magneto-impedance sensor element Jun. 4, 2013
8432163 Method for low frequency noise cancellation in magneto-resistive mixed sensors Apr. 30, 2013
8400146 Stray field collector pad, and bio-molecule sensing module or biochip using the same Mar. 19, 2013
8395381 Micromachined magnetic field sensors Mar. 12, 2013
8368396 Magnetic sensor element having multi-magnetic domain structure, and detection apparatus equipped with same Feb. 5, 2013
8339133 Thin film fluxgate sensor Dec. 25, 2012
8283920 Thin film magnetic field sensor Oct. 9, 2012
8269492 Magnetic balance type current sensor Sep. 18, 2012
8253414 Integrated circuit including a magnetic field sensitive element and a coil Aug. 28, 2012
8242776 Magnetic sensor design for suppression of barkhausen noise Aug. 14, 2012
8237437 Two-axis magnetic field sensor with multiple pinning directions Aug. 7, 2012
8228055 Apparatus and method for measuring critical current properties of a coated conductor Jul. 24, 2012
8222898 Method and apparatus for utilizing magnetic field modulation to increase the operating frequency of sensors Jul. 17, 2012
8178361 Magnetic sensor and manufacturing method therefor May. 15, 2012
8159218 Microelectromechanical magnetometer with integrated electronics Apr. 17, 2012
8154280 Thin film lamination, thin film magnetic sensor using the thin film lamination and method for manufacturing the thin film lamination Apr. 10, 2012
8130067 High frequency semiconductor transformer Mar. 6, 2012
8098067 Magnetic sensor element and magnetic sensor using the same Jan. 17, 2012
8080993 Sensor module with mold encapsulation for applying a bias magnetic field Dec. 20, 2011
8048686 Production of a device comprising magnetic structures formed on one and the same substrate and having respective different magnetization orientations Nov. 1, 2011
7960970 Magnetic sensor and manufacturing method of the same Jun. 14, 2011
7956610 Sensor for sensing a magnetic field direction, magnetic field direction sensing, method for producing magnetic field sensors, and write-in apparatus for producing magnetic field sensors Jun. 7, 2011
7952349 Apparatus and method utilizing magnetic field May. 31, 2011
7948349 Magnetic coupler May. 24, 2011
7930133 Magnetic-sensor controller, magnetism measurement apparatus, offset setting method, and computer-readable medium on which offset setting program is recorded Apr. 19, 2011
7923993 Rotation detection device and rotation detector equipped bearing assembly Apr. 12, 2011
7920975 Methods of detecting anomalies in ambient alternating current fields Apr. 5, 2011
7919961 Method for measuring magnetic permeability and reference sample used in the latter Apr. 5, 2011
7906961 Magnetic field sensor arrangement and method for non-contact measurement of a magnetic field Mar. 15, 2011
7898249 Reorientation of magnetic layers and structures having reoriented magnetic layers Mar. 1, 2011
7808236 Energy harvester utilizing external magnetic field Oct. 5, 2010
7786726 Sensor Aug. 31, 2010
7782049 Magnetic device Aug. 24, 2010
7772841 Magnetic device Aug. 10, 2010
7737687 Fluxgate sensor having conbzr magnetic core and fabrication method thereof Jun. 15, 2010
7723984 Magnetic sensor and current sensor May. 25, 2010
7710708 Two-axis geomagnetic sensor and method for manufacturing the same May. 4, 2010
7683612 Thin film magnetic sensor Mar. 23, 2010
7646196 Current sensor and method of manufacturing current sensor Jan. 12, 2010
7629789 Reorientation of magnetic layers and structures having reoriented magnetic layers Dec. 8, 2009
7615995 Thin film device for detection of physical quantities Nov. 10, 2009
7602176 AMR sensor element for angle measurement Oct. 13, 2009
7592803 Highly sensitive AMR bridge for gear tooth sensor Sep. 22, 2009

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