| Patents for G01V 3 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation (25,929) |
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| 07/01/1992 | EP0492029A1 Inductive proximity sensor |
| 06/30/1992 | US5126939 Method for estimating the organic matter content of sedimentary rocks from data recorded in wells by well-logging probes |
| 06/30/1992 | US5126654 Non-invasive, high resolution detection of electrical currents and electrochemical impedances at spaced localities along a pipeline |
| 06/30/1992 | CA1304469C Magnetic sensing proximity detector |
| 06/25/1992 | WO1992010768A1 System for logging a well during the drilling thereof |
| 06/25/1992 | WO1992010619A1 Pointer |
| 06/24/1992 | EP0490921A1 Metal detecting system. |
| 06/17/1992 | EP0490855A1 Pointer |
| 06/17/1992 | EP0490716A2 Method and apparatus for correcting an induction log for dip effect and producing an output record medium reflecting the correction |
| 06/17/1992 | CN1062040A Microcomputerized recorder of electromagnetic seismic pulses |
| 06/17/1992 | CN1017096B Steel rope beoken wire test device with high sensitive magnetic sensor |
| 06/16/1992 | US5122744 Gradiometer having a magnetometer which cancels background magnetic field from other magnetometers |
| 06/11/1992 | WO1992009901A1 Apparatus and technique for nmr diffusion measurement |
| 06/10/1992 | EP0489578A1 Apparatus and technique for NMR diffusion measurement |
| 06/09/1992 | US5121105 Metal detector |
| 06/03/1992 | EP0329652B1 Device for measurement of a magnetic field which is constant or varies over time |
| 06/03/1992 | CN1016902B Method for receiving electromagnetic radiation before seism and equipment thereof |
| 06/02/1992 | US5119028 Method and system for determining the depth of an electrically conductive body in a medium having a known conductivity and a known permeability by measuring phase difference between a primary and secondary magnetic field |
| 06/02/1992 | CA1302498C Formation electromagnetic parameters measuring tool |
| 06/02/1992 | CA1302478C Ship's magnetic self-ranging system |
| 05/27/1992 | EP0487424A1 High resolution logging method and apparatus |
| 05/26/1992 | CA1301841C Method for calibrating dielectric permittivity log measurements |
| 05/25/1992 | WO1992009345A1 Game machine using metallic body as medium |
| 05/25/1992 | WO1992009344A1 Sensor for sensing existence position of metallic body |
| 05/24/1992 | CA2030594A1 Variable mode microwave water cut monitor and method |
| 05/21/1992 | CA2055765A1 Method and apparatus for broadband measurement of dielectric properties |
| 05/20/1992 | EP0485805A2 Detection apparatus for tooth implants |
| 05/20/1992 | CN1061189A Vehicle security system |
| 05/19/1992 | US5115198 Pulsed electromagnetic dipmeter method and apparatus employing coils with finite spacing |
| 05/19/1992 | US5115192 Magnetic displacement transducer with saturation compensation |
| 05/19/1992 | US5114517 Methods, apparatus and devices relating to magnetic markers for elongated hidden objects |
| 05/14/1992 | WO1992008150A1 Displacement transducer |
| 05/14/1992 | DE4036123A1 Concrete reinforcement structure measuring device - records signal from sensor detecting reinforcing iron as function of sensor movement across concrete surface |
| 05/13/1992 | EP0485190A2 Security systems |
| 05/13/1992 | EP0485189A2 Pavement structure examination vehicle |
| 05/13/1992 | CN1016649B Induction logging sonde with metallic support |
| 05/12/1992 | US5113192 Method for using seismic data acquisition technology for acquisition of ground penetrating radar data |
| 05/07/1992 | CA2054153A1 Displacement transducer |
| 05/06/1992 | EP0483786A2 Method and apparatus for shaping a magnetic field |
| 05/05/1992 | CA1300226C Device for measuring the impedance of a medium along a measurement line |
| 04/30/1992 | WO1992007279A1 Magnetic field generating assembly |
| 04/28/1992 | US5108822 With dielectric film of reduced thickness |
| 04/22/1992 | EP0481211A2 Gradiometer having a magnetometer which cancels background magnetic field from other magnetometers |
| 04/21/1992 | CA1299244C Apparatus for determining the strength and direction of a magnetic field, particularly the geomagnetic field |
| 04/16/1992 | WO1992006392A1 Apparatus having magnetic field inducing target signal transmitter and position reference transmitter for detecting concealed pipes |
| 04/14/1992 | US5105356 Method for curve correlation |
| 04/14/1992 | CA1298872C Electric logging method |
| 04/10/1992 | CA2053117A1 Technique for reducing whirling of a drill string |
| 04/09/1992 | DE4030634A1 Detecting conductor lead(s) e.g. in wall - applying HF carrier LF modulated at accessible end of test lead for detection b radio receiver |
| 04/08/1992 | EP0478997A1 Metal locating device using magnetic field distortion |
| 04/07/1992 | US5103178 Method using a pluraliyt of electrode, including a reference electrode, for recording a spontaneous potential curve in a borehole while drilling |
| 04/02/1992 | DE4105842A1 Locating joint sleeve in buried ferromagnetic pipeline - magnetising pipeline and externally measuring field anomalies caused by non-magnetic sealing material |
| 04/01/1992 | EP0478409A1 Logging method and apparatus for measuring the resistivity of earth formations |
| 04/01/1992 | EP0202320B1 A method for radar mapping an area and a radar equipment to carry out the method |
| 03/31/1992 | US5099845 Medical instrument location means |
| 03/25/1992 | EP0477167A2 Method and arrangement for area monitoring |
| 03/18/1992 | EP0475715A2 Conductivity log for boreholes |
| 03/18/1992 | EP0386134A4 Antenna system for magnetic and resonant circuit detection |
| 03/18/1992 | CA2051533A1 Procedure for monitoring an area of ground |
| 03/17/1992 | US5097211 Magnetic detection appartaus with plastic housing and sound-transmissive handle |
| 03/17/1992 | CA1297551C Deactivatable magnetic marker, method of making same and article surveillance system utilizing same |
| 03/12/1992 | CA2039864A1 Search coil assembly with low resistance coils and method for making same |
| 03/11/1992 | EP0474554A2 Method and apparatus for measuring azimuthal as well as longitudinal waves in a formation traversed by a borehole |
| 03/11/1992 | CN1015837B Electroseismic prospecting |
| 03/11/1992 | CN1015836B Excited polarization method with screen transition |
| 03/11/1992 | CA2050953A1 Conductivity log for boreholes |
| 03/10/1992 | US5095272 Methods for determining formation dip and strike using high frequency phase shift |
| 03/10/1992 | CA1297153C Methods and apparatus for measurement of low frequency a.c. magnetic fields within cased boreholes to determine properties of geological formations |
| 03/05/1992 | WO1992003090A1 Probe system |
| 03/05/1992 | DE4027020A1 Detecting presence of metal reinforcement near bore in concrete - introducing probe generating magnetic or EM field and sensor measuring change in strength |
| 03/04/1992 | EP0472932A1 Electronic article surveillance tag and method for implementing same |
| 03/04/1992 | EP0472549A1 Process and device for determining the dynamic profile of an object |
| 03/04/1992 | EP0203179B1 Flux gate sensor |
| 03/03/1992 | US5093622 Method and apparatus for determining direction to and position of an underground conductor |
| 03/01/1992 | WO1992004645A1 Vehicle security system |
| 03/01/1992 | CA2067730A1 Vehicle security system |
| 02/26/1992 | EP0472013A1 Electronic article surveillance system and antenna structure therefor |
| 02/26/1992 | EP0471858A1 System for detecting the position of an underground excavator |
| 02/26/1992 | CN1015673B Frequency spectrum stimulated electricity surveying system with double-frequency channels and multiparameters |
| 02/25/1992 | CA1296388C Apparatus for measuring magnetic fields |
| 02/20/1992 | WO1992002834A1 Procedure for locating an underground conductor and a coupling circuit for carrying out this procedure |
| 02/20/1992 | DE4025837A1 Hall sensor avoiding inhomogeneity effects - has contoured pole face of magnetic field generator with at least magnets |
| 02/18/1992 | US5089779 Method and apparatus for measuring strata resistivity adjacent a borehole |
| 02/18/1992 | US5089776 Apparatus for detecting defects in a moving steel strip with a magnetizing yoke and a sensor placed on opposite sides of the strip |
| 02/12/1992 | EP0470318A2 Resonant tag and method of manufacturing the same |
| 02/11/1992 | US5087873 Non-invasive, high resolution detection of electrical currents and electrochemical impedances at spaced localities along a pipeline |
| 02/06/1992 | WO1992001956A1 Strip position sensor |
| 02/06/1992 | DE4124539A1 Metal detector probe with marking arrangement - has roller surface enabling marking element to be brought into contact with surface when probe tilted |
| 02/05/1992 | EP0469769A2 Magnetically-coupled, two-resonant-circuit, frequency-division tag |
| 02/04/1992 | US5086300 Method and system for passive detection of electromagnetic events associated with destructive devices |
| 02/04/1992 | US5086273 A.C. electromagnetic system for determining position of an encased movable electrically conductive element |
| 02/03/1992 | CA2041827A1 Electronic article surveillance tag and method for implementing same |
| 01/29/1992 | CN2094753U Multi-way electric polar converter |
| 01/28/1992 | US5084680 Detection of exposed steel in the surface of reinforced concrete |
| 01/28/1992 | US5084678 Method and apparatus for determining the direction to a metal-cased well from another well |
| 01/25/1992 | WO1992001957A1 Method and apparatus for underground radar tomography |
| 01/25/1992 | CA2065251A1 Underground radar tomography and apparatus therefor |
| 01/23/1992 | WO1992001235A1 Multiple-quantum nmr with frequency-modulated chirp pulses |
| 01/22/1992 | EP0467202A2 Arrangement for testing of objects with magnetic properties |
| 01/16/1992 | DE4030882C1 Electrical and magnetic fields insensitive continuous plating plant - has forked sensor head to position strip edge, arms to mount AC transmitter and parallelly connected receiver coils |