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Class Information
Number: 324/235
Name: Electricity: measuring and testing > Magnetic > With means to create magnetic field to test material > Electrically energized nonforce type sensor > Noncoil type
Description: Subject matter wherein the energized sensor does not rely solely on inductive effects.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7626383 |
Apparatus and method for holding a rotatable eddy-current magnetic probe, and for rotating the probe around a boundary |
Dec. 1, 2009 |
| 7598736 |
Integrated circuit including magneto-resistive structures |
Oct. 6, 2009 |
| 7573262 |
Magnetic sensor, and method of compensating temperature-dependent characteristic of magnetic sensor |
Aug. 11, 2009 |
| 7560921 |
Method and device for analyzing distribution of coercive force in vertical magnetic recording medium using magnetic force microscope |
Jul. 14, 2009 |
| 7525308 |
Magnetic detecting device and material identifying device |
Apr. 28, 2009 |
| 7495433 |
Device for detecting defects in electrically conductive materials in a nondestructive manner |
Feb. 24, 2009 |
| 7449881 |
Method and apparatus for determining the thickness of a chromium depleted zone of a surface region of a steel member |
Nov. 11, 2008 |
| 7391204 |
Sensor signal conditioning circuit |
Jun. 24, 2008 |
| 7375514 |
Flexible hand held MR scanning array for cracks/flaws |
May. 20, 2008 |
| 7368905 |
System, method, and apparatus for use of micro coils within a single slider test nest |
May. 6, 2008 |
| 7355410 |
Handheld scanning subsurface detector |
Apr. 8, 2008 |
| RE40166 |
MAGNETIC NON-DESTRUCTIVE METHOD AND APPARATUS FOR MEASUREMENT OF CROSS SECTIONAL AREA AND DETECTION OF LOCAL FLAWS IN ELONGATED FERROUS OBJECTS IN RESPONSE TO LONGITUDINALLY SPACED SENSORS IN |
Mar. 25, 2008 |
| 7304474 |
Eddy current inspection device with arrays of magnetoresistive sensors |
Dec. 4, 2007 |
| 7301335 |
Apparatus and method for eddy-current magnetic scanning a surface to detect sub-surface cracks around a boundary |
Nov. 27, 2007 |
| 7233142 |
Planer reader of non-erasable magnetic media and local permeability |
Jun. 19, 2007 |
| 7098655 |
Eddy-current sensor with planar meander exciting coil and spin valve magnetoresistive element for nondestructive testing |
Aug. 29, 2006 |
| 7095223 |
Method of locating an anomaly in a tubular member in a well |
Aug. 22, 2006 |
| 7026811 |
Methods and apparatus for eddy current inspection of metallic posts |
Apr. 11, 2006 |
| 6992482 |
Magnetic field sensor having a switchable drive current spatial distribution |
Jan. 31, 2006 |
| 6967478 |
Pipe condition detecting apparatus |
Nov. 22, 2005 |
| 6924640 |
Oil and gas well tubular inspection system using hall effect sensors |
Aug. 2, 2005 |
| 6888346 |
Magnetoresistive flux focusing eddy current flaw detection |
May. 3, 2005 |
| 6879152 |
Evaluation system and method of measuring a quantitative magnetic field of a magnetic material |
Apr. 12, 2005 |
| 6822443 |
Sensors and probes for mapping electromagnetic fields |
Nov. 23, 2004 |
| 6815946 |
Magnetically activated well tool |
Nov. 9, 2004 |
| 6774627 |
Leak magnetism detection sensor for magnetic flaw detection system |
Aug. 10, 2004 |
| 6727684 |
Magnetic field sensor |
Apr. 27, 2004 |
| 6720764 |
Magnetic sensor system useful for detecting tool joints in a downhole tubing string |
Apr. 13, 2004 |
| 6714006 |
Integrated field generator for actuating magnetic heads |
Mar. 30, 2004 |
| 6700371 |
Three dimensional conductive strap for a magnetorestrictive sensor |
Mar. 2, 2004 |
| 6693425 |
Sensor having an electric coil and giant magnetoresistor for detecting defects in a component |
Feb. 17, 2004 |
| 6683452 |
Magnetic flux density apparatus for, E.G., detecting an internal crack of a metal or a shape of the metal |
Jan. 27, 2004 |
| 6633159 |
Method and apparatus for magnetic detection of degradation of jacketed elevator rope |
Oct. 14, 2003 |
| 6583617 |
Barkhausen noise measurement probe with magnetoresistive sensor and cylindrical magnetic shield |
Jun. 24, 2003 |
| 6579612 |
Magnetostrictive sensor structure |
Jun. 17, 2003 |
| 6549005 |
Magnetic detection of discontinuities in railway rails using hall effect sensors |
Apr. 15, 2003 |
| 6541966 |
Precision metal locating apparatus |
Apr. 1, 2003 |
| 6538433 |
Method and apparatus for non-contact measuring of metal bed parameters |
Mar. 25, 2003 |
| 6528993 |
Magneto-optical microscope magnetometer |
Mar. 4, 2003 |
| 6518747 |
Method and apparatus for quantitative determination of accumulations of magnetic particles |
Feb. 11, 2003 |
| 6504363 |
Sensor for eddy current testing and method of use thereof |
Jan. 7, 2003 |
| 6492808 |
MAGNETIC NON-DESTRUCTIVE METHOD AND APPARATUS FOR MEASUREMENT OF CROSS SECTIONAL AREA AND DETECTION OF LOCAL FLAWS IN ELONGATED FERROUS OBJECTS IN RESPONSE TO LONGITUDINALLY SPACED SENSORS IN |
Dec. 10, 2002 |
| 6483302 |
Method and apparatus for magnetic inspection of ferrous conduit for wear |
Nov. 19, 2002 |
| 6448766 |
Method of imaging a magnetic field emanating from a surface using a conventional scanning force microscope |
Sep. 10, 2002 |
| 6441604 |
Apparatus and method for sensing electric current based on electric signal from magneto-electric conversion element |
Aug. 27, 2002 |
| 6411084 |
Magnetically activated well tool |
Jun. 25, 2002 |
| 6396261 |
Scanning AC hall microscope |
May. 28, 2002 |
| 6380747 |
Methods for processing, optimization, calibration and display of measured dielectrometry signals using property estimation grids |
Apr. 30, 2002 |
| 6373244 |
Apparatus for marking a surface indicating elements located inwardly of the surface |
Apr. 16, 2002 |
| 6369573 |
Apparatus for reducing rotation of a towed airborne article |
Apr. 9, 2002 |
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