| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 324207110 |
Displacement
| 1588 |
| 324244000 |
Magnetometers
| 991 |
| 324228000 |
With means to create magnetic field to test material
| 457 |
| 324202000 |
Calibration
| 114 |
| 324260000 |
Magnetic field detection devices
| 46 |
| 324225000 |
With compensation for test variable
| 44 |
| 324219000 |
Magnetic sensor within material
| 44 |
| 324204000 |
Fluid material examination
| 38 |
| 324210000 |
Magnetic information storage element testing
| 27 |
| 324209000 |
Stress in material measurement
| 23 |
| 324222000 |
Hysteresis or eddy current loss testing
| 22 |
| 324226000 |
Combined
| 16 |
| 324201000 |
Susceptibility
| 15 |
| 324214000 |
By paramagnetic particles
| 12 |
| 324227000 |
Plural tests
| 10 |
| 324224000 |
With temperature control of material or element of test circuit
| 9 |
| 324205000 |
Permanent magnet testing
| 8 |
| 324262000 |
Magnetic test structure elements
| 7 |
| 324263000 |
Current through test material forms test magnetic field | 5 |
| 20090058414 | MEASURING ELECTRIC AND MAGNETIC FIELD - A field detection device such as a micro-strip portion of a transmission line may detect an electric field and a magnetic field induced by current steps injected into the chassis coupled to a ground plane. The shield portions of the transmission line may be coupled to a first and a second port of an I/O connector. A measurement system coupled to the connector may determine the electric field and the magnetic field detected by the micro-strip. The measurement system may determine the electric field and magnetic field based on computing the sum and difference of the signals provided by the first port and the second port. | 03-05-2009 |
| 20090322326 | Magnetic field probe, current distribution measuring device and radio device - There is provided a magnetic field probe which includes: a probe body which is a coaxial cable wound to form a plurality of loop-like portions in planar view, the coaxial cable including an inner conductor, an insulator enclosing the inner conductor and an outer conductor enclosing the insulator; and a plurality of notches each of which is formed in each of the loop-like portions so that the outer conductor is divided to expose the inner conductor or the insulator, wherein: a plurality of outer conductor parts resulting from division by the notches are arranged to be electrically connected to each other, an one end of the inner conductor in the coaxial cable is connected to any one of the outer conductor parts; and winding directions of at least one of a pair of loop-like portions among the loop-like portions are reversed from each other in planar view. | 12-31-2009 |
| 20100026292 | METHOD AND APPARATUS FOR MEASURING MAGNETIC ANISOTROPY OF A CONDUCTIVE WIRE OR TAPE - A method and apparatus for measuring the magnetic field anisotropy of critical currents in conductive wires and conductive tapes having lengths of at least one meter. In one embodiment, the method and apparatus are adapted to measure the magnetic field anisotropy of critical currents in superconducting wires and tapes. The apparatus includes a magnetic field generation assembly that is capable of generating a magnetic field. The magnetic field is orthogonal to a current passing through a conductive wire or conductive tape positioned on an axis of the assembly. The magnetic field generation assembly and magnetic field are rotatable about the axis. | 02-04-2010 |
| 20100244821 | ROPE TESTER DEVICE - In order to reduce noise due to the rope vibration in the rope tester, a mounting shaft extending perpendicular to the running direction of the wire rope is positioned in front of the rope tester, and a hook-shaped engagement piece, which extends from the rope tester and is slidable or rotatable into an opened or closed position, is brought into engagement with the mounting shaft so that the rope tester is held movable in the perpendicular direction relative to the running direction of the wire rope. | 09-30-2010 |
| 20120326716 | METHOD OF DETECTING MAGNETIC FIELD GENERATED FROM CURRENT AND ESTIMATING CURRENT AMOUNT - When a through hole is formed in a primary conductor, a measurement target current partially becomes a bypass current that flows around the through hole. Only a magnetic field component in the X-axis direction is generated from the current that flows through a portion without the influence of the through hole. However, the bypass current generates a magnetic field component in the Y-axis direction at the tilt portion. A magnetic detection element having a magnetic field detection sensitivity only in the Y-axis direction is installed near the through hole such that the magnetic field detection direction is set in the Y-axis direction, thereby detecting the magnetic field component and measuring the current amount without the influence of a neighboring current. | 12-27-2012 |
| 324217000 |
Railroad rail flaw testing | 4 |
| 20100237857 | STRINGLINE AND CROSS-LEVEL GAUGE - A tool and method for inspecting a track having a first rail and a second rail. The tool has a first mounting device which is attached to a first rail of the track. A cord attached to the mounting device is tensioned and positioning the cord in a proper position, allowing an inspector to measure a first distance between a defined point on the cord and the first rail or the second rail to determine if anomalies are present in the track. | 09-23-2010 |
| 20100253329 | System and Apparatus for Automated Inspection of Overhead Electrical Traction Rail Car Pantographs - This invention will provide a quick and safe method to inspect the condition of a pantograph and associated contacts to insure that appropriate contact is maintained and that a light rail car operates with maximum efficiency. Cameras that are capable of operating in low levels of lighting will capture visual images of the pantograph and contacts and relay that information to a remote location for appropriate action. The data concerning the condition of the pantograph may be stored for forensic purposes and routine corrective action. | 10-07-2010 |
| 20110043199 | SENSOR ASSEMBLY - The invention relates to a means of enabling inspection of engineering components, such as rails used in the railway industry. | 02-24-2011 |
| 20130113472 | METHOD AND APPARATUS FOR MAGNETIC CRACK DEPTH PREDICTION - A method of magnetic crack depth prediction for a magnetisable component of a first geometry comprising determining a measure of remnant magnetic flux leakage for a section of the component and, converting the remnant magnetic flux leakage to a predicted crack depth for that section of the component using an empirically determined relationship between remnant magnetic flux leakage and crack depth for a previously tested in service component of the first geometry. | 05-09-2013 |
| 324206000 |
Movable random length material measurement | 2 |
| 20110148397 | LENGTH MEASUREMENT APPARATUS - A length measurement apparatus ( | 06-23-2011 |
| 20130113464 | STOP SYSTEM FOR WIRE SPOOLS - An assembly magnetically marks a wire and detects a magnetic mark on the wire. The assembly includes an apparatus for altering the wire, an active coil for magnetically marking a wire, and a passive coil for detecting a magnetic mark. The active coil is disposed at a wire inlet of the apparatus. The passive coil is disposed at a wire outlet of the apparatus. | 05-09-2013 |
| 324223000 |
Hysteresis loop curve display or recording | 1 |
| 20090309587 | Techniques for Electrically Characterizing Tunnel Junction Film Stacks with Little or no Processing - Probes are electrically connected to a surface of a tunnel junction film stack comprising a free layer, a tunnel barrier, and a pinned layer. Resistances are determined for a variety of probe spacings and for a number of magnetizations of one of the layers of the stack. The probe spacings are a distance from a length scale, which is related to the Resistance-Area (RA) product of the tunnel junction film stack. Spacings from as small as possible to about 40 times the length scale are used. Beneficially, the smallest spacing between probes used during a resistance measurement is under 100 microns. A measured in-plane MagnetoResistance (MR) curve is determined from the “high” and “low” resistances that occur at the two magnetizations of this layer. The RA product, resistances per square of the free and pinned layers, and perpendicular MR are determined through curve fitting. | 12-17-2009 |
| 324213000 |
Magnetic recording medium on magnetized object records object field | 1 |
| 20100225310 | TOUCH-DOWN DETERMINING DEVICE, TOUCH-DOWN DETERMINING METHOD, AND MAGNETIC DISK DEVICE - According to one embodiment, a touch-down determining device, includes: an alternating current perturbation module configured to periodically perturb power of a heater by an alternating current, the heater adjusting protrusion amounts of a write magnetic pole and a read element of a magnetic head in a direction towards a recording medium; a change detector configured to detect a change in a spectrum level of a portion of a spectrum of a read signal read from the recording medium by the magnetic head receiving the power perturbed by the alternating current, the portion of the spectrum corresponding to the alternating current; and a touch-down determining module configured to determine whether touch-down is made, based on the change in the spectrum level detected by the change detector. | 09-09-2010 |
| Entries |
| Document | Title | Date |
|---|
| 20080197835 | METHOD AND DEVICE FOR DISTANCE MEASUREMENT BY MEANS OF CAPACITIVE OR INDUCTIVE SENSORS - “The application relates to a method and device for measuring the propagation time of capacitive or inductive fields.” | 08-21-2008 |
| 20110221426 | Medium Process Apparatus and Financial Device - A medium process apparatus is provided. The medium process apparatus comprises a state detection unit configured to detect a state of a transferring medium and a support unit configured to support the transferring medium. The support unit comprises a plurality of support parts successively disposed in a transfer direction of the medium. The plurality of support parts comprise a second support part facing the state detection unit and a first support part disposed at a front or rear side of the second support part in the transfer direction of the medium. | 09-15-2011 |
| 20120242328 | METHOD FOR DETECTING CONCENTRATION OF PARTICLES AND DEVICE THEREFOR - A magnetic particle producing part including magnetic and counterpart members in a path of a particle-includable liquid, at least one of the members being moved to press the other member in the liquid, the magnetic member being worn by particles in the liquid to produce magnetic particles; a magnetic particle measuring part positioned in the path same as in the producing part to measure the magnetic particle concentration in the liquid; and a control part converting the concentration of the magnetic particles detected by the measuring part into a concentration of particles in the liquid on the basis of a calibration line representing a correlation preliminarily measured between the concentrations of the magnetic particles and of the particles in the liquid to detect the concentration in the liquid. | 09-27-2012 |
| 20130009630 | MAGNETIC DETECTION DEVICE, MAGNETIC SENSOR INCLUDING THE SAME, AND METHOD FOR MANUFACTURING MAGNETIC DETECTION DEVICE - A magnetic detection device includes a layered film including a self-pinned magnetic layer, a free magnetic layer, a nonmagnetic material layer disposed between the pinned magnetic layer and the free magnetic layer, and a top capping layer. The pinned magnetic layer includes a first magnetic layer, a second magnetic layer, and a nonmagnetic intermediate layer disposed therebetween. A first magnetization of the first magnetic layer is pinned in antiparallel with a second magnetization of the second magnetic layer. The capping layer is formed of tantalum, and an as-deposited thickness of the capping layer is 55 Å or more. | 01-10-2013 |
| 20130015842 | CURRENT DETECTION APPARATUSAANM Kawaguchi; YasunoriAACI Shimada-shiAACO JPAAGP Kawaguchi; Yasunori Shimada-shi JP - A current detection apparatus includes two magnetic detectors that are arranged oppositely on a front surface and a back surface of a board which is located above a current path in order to detect a strength of a magnetic field, an electromagnetic shielding frame member that is mounted on the current path so that the two magnetic detectors and a part of the current path are accommodated inside the electromagnetic shielding frame member, and a control circuit that determines whether a failure which occurs in either of the two magnetic detectors from a difference between magnetic fields detected by the two magnetic detectors, respectively. Sensitivities of the two magnetic detectors are made adjusted so that current values outputted from the two magnetic detectors depending on detected magnetic fields are identical to each other in a normal state. | 01-17-2013 |
| 20130082691 | HEADSET AND EARPHONE - A headset or earphone is provided, having an electro-acoustic reproduction transducer with an oscillator coil arranged in an axis. An amplifier is coupled to the electro-acoustic reproduction transducer. The headset or earphone also has a magnetic interference sensor for measuring a magnetic interference field. A correction unit, for analyzing an output of the magnetic interference sensor and for producing a compensation signal, is coupled to the magnetic interference sensor. In addition, the headset or earphone also includes an adding unit for adding the compensation signal to an input signal and for outputting the result to the amplifier. | 04-04-2013 |
| 20130320963 | System and Method for Evaluating a Calibration of a Magnetometer on a Mobile Device - A method and system are provided for evaluating a calibration of a magnetometer on a mobile device. The method includes obtaining a parameter associated with the calibration, determining a component of the parameter along an axis of the magnetometer and determining a calibration quality indicator using the component. | 12-05-2013 |
