| 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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| 10/31/1995 | US5463523 Zero field degaussing system and method |
| 10/31/1995 | US5463354 Proximity switches including long tail pair with emitter follower feedback |
| 10/31/1995 | US5463320 Apparatus and method for determining the resitivity of underground formations surrounding a borehole |
| 10/31/1995 | US5463319 Induction log sonde feedpipe having a plurality of tubes arranged within it and windows to facilitate the passage of the conductors |
| 10/26/1995 | WO1995028748A1 Antenna arrangement |
| 10/26/1995 | WO1995028659A1 Fluid detection means |
| 10/26/1995 | WO1995028658A1 An underground monitoring system |
| 10/26/1995 | WO1995028657A1 Method and apparatus for compensation of field distortion in a magnetic structure using spatial filter |
| 10/26/1995 | DE4432468C1 Näherungsschalter und ein Verfahren zu dessen Herstellung Proximity switch and a method for its preparation |
| 10/26/1995 | DE4414748A1 Proximity sensor for contactless inductive or capacitive switch |
| 10/25/1995 | EP0678759A1 Inductive proximity detector with adjustable frequency |
| 10/25/1995 | EP0678758A1 Offshore petroleum exploration system |
| 10/24/1995 | US5461562 Method and apparatus for detecting and quantifying hydrocarbon bearing laminated reservoirs on a workstation |
| 10/24/1995 | US5461386 Inductor/antenna for a recognition system |
| 10/19/1995 | DE4424058C1 Recognition signal generator for detecting metallic parts in product on conveyor belt |
| 10/19/1995 | DE19509934A1 Excavating device |
| 10/17/1995 | US5459451 Electronic article surveillance system with enhanced geometric arrangement |
| 10/17/1995 | US5459405 Method and apparatus for sensing proximity of an object using near-field effects |
| 10/11/1995 | EP0566578B1 Method and apparatus for surveying terrain resistivity |
| 10/11/1995 | CN1109977A Human body detector |
| 10/10/1995 | US5457628 Method of interpretation of electrical dispersion data of porous media |
| 10/10/1995 | US5457396 Electrode structure of metallic particle detecting sensor |
| 10/10/1995 | US5457394 Impulse radar studfinder |
| 10/10/1995 | US5457385 NQR methods and apparatus |
| 10/10/1995 | US5457382 Apparatus for testing documents having magnetic properties |
| 09/26/1995 | US5453693 For measuring characteristics of materials contained in a cased well |
| 09/26/1995 | US5452761 Synchronized digital stacking method and application to induction logging tools |
| 09/26/1995 | US5452639 Arrangement for locating below-ground ammunition |
| 09/26/1995 | US5452518 Method of correcting for axial error components in magnetometer readings during wellbore survey operations |
| 09/21/1995 | WO1995025385A1 Capacitance-sensitive switch and switch array |
| 09/21/1995 | CA2185420A1 Capacitance-sensitive switch and switch array |
| 09/20/1995 | EP0672919A2 Container locating- and identifying system in particular for container with a dangerous content |
| 09/20/1995 | EP0672915A1 Wide aperture gradient set |
| 09/20/1995 | EP0575318B1 An electronic measurement apparatus movable in a cased borehole and compensating for casing resistance differences |
| 09/19/1995 | US5451873 Method and apparatus for determining the in situ larmor frequency of a wellbore NMR tool to compensate for accumulation of magnetic material on the magnet housing of the tool |
| 09/14/1995 | WO1995024663A1 A borehole measurement system employing electromagnetic wave propagation |
| 09/14/1995 | WO1995024662A1 Induction logging instrument |
| 09/14/1995 | WO1995024660A1 Device for finding concealed studs |
| 09/14/1995 | WO1995024658A1 Method and apparatus for detecting local precursor seismic activity |
| 09/13/1995 | EP0671013A1 Magnetic measurement station for naval vessels. |
| 09/13/1995 | CN1108391A Large power, electrically metering, computer controlling multi-electrode converter |
| 09/12/1995 | US5450012 Soil electrode assembly for protecting and supporting an electrode member for measuring the resistivity of a volume of the soil |
| 09/12/1995 | US5450009 Magnetic sensor and structure of its mounting |
| 09/12/1995 | CA2041616C Electronic article surveillance system with antenna array for enhanced field falloff |
| 09/08/1995 | WO1995024000A1 Reproduction apparatus with microwave detection |
| 09/08/1995 | WO1995023984A1 Magnetic sensor |
| 09/08/1995 | CA2181682A1 Reproduction apparatus with microwave detection |
| 09/07/1995 | DE4406681A1 Inspection or processing unit position determination method in esp. ferritic pipe |
| 09/07/1995 | DE19507304A1 Magnetic field detector with premagnetising magnet having polarised surface |
| 09/06/1995 | EP0670562A1 Resonant tag label detection system and method utilizing multiple frequency response |
| 09/06/1995 | EP0670505A1 Inductive proximity sensor |
| 09/06/1995 | EP0670073A1 A capacitive verification device for a security thread embedded within currency paper. |
| 09/06/1995 | CN1029708C Geophysical prospecting |
| 09/05/1995 | USH1490 Marine geophysical prospecting system |
| 09/05/1995 | US5448171 Method for variable radial depth induction log |
| 08/30/1995 | EP0669007A1 Movable solenoid source in target well for location measurement |
| 08/29/1995 | US5446654 Shoulder effect logging method |
| 08/29/1995 | US5446391 Dielectric detecting device |
| 08/29/1995 | US5445150 Invasive system employing a radiofrequency tracking system |
| 08/24/1995 | WO1995022809A1 Method and device for evaluating the permeability of a rock medium |
| 08/24/1995 | DE19505453A1 Klebemonitor Adhesive Monitor |
| 08/23/1995 | EP0646250A4 Nuclear magnetic resonance determination of petrophysical properties of geologic structures. |
| 08/23/1995 | EP0606253A4 Catheter depth, position and orientation location system. |
| 08/23/1995 | EP0546142B1 System for multidirectional information transmission between at least two units of a drilling assembly |
| 08/23/1995 | CA2142928A1 Method and apparatus for evaluating and/or measuring the permeability of a rock formation |
| 08/22/1995 | US5444669 Magnetic relative position measuring system |
| 08/22/1995 | US5444382 Position and orientation locator/monitor |
| 08/22/1995 | US5444374 Method and apparatus for simultaneously collecting spatially and temporally varying magnetic survey data |
| 08/22/1995 | US5444367 Method and apparatus for detecting particles in a fluid having coils isolated from external vibrations |
| 08/22/1995 | US5444364 Circuit tracer having an electric field sensor, a differential electric field sensor and an inductive sensor |
| 08/22/1995 | US5443077 Method of monitoring the position of a sensor |
| 08/22/1995 | US5443066 Invasive system employing a radiofrequency tracking system |
| 08/17/1995 | WO1995021752A1 Seat occupant detection system |
| 08/17/1995 | DE4417931C1 Metal detector for indicating buried object presence and direction |
| 08/17/1995 | DE4412994C1 Geophysical measurement method for detection of natural cavity or mineshaft |
| 08/16/1995 | EP0667520A1 Liquid sensing circuit |
| 08/16/1995 | CN1106947A Surveillance marker and method of making same |
| 08/15/1995 | US5442347 Double-driven shield capacitive type proximity sensor |
| 08/15/1995 | US5442294 Conductivity method and apparatus for measuring strata resistivity adjacent a borehole |
| 08/15/1995 | US5442293 Method and apparatus for determining fluid content and conductivity in porous materials |
| 08/10/1995 | DE4403235A1 Method of tracing or following electrical conductors |
| 08/10/1995 | DE19503203A1 Sensor für Position und Massenverteilung Sensor for position and mass distribution |
| 08/10/1995 | CA2118140A1 Detection and mapping of hydrocarbon reservoirs with radar waves |
| 08/09/1995 | EP0666509A2 Recording material recognizing device |
| 08/09/1995 | EP0665958A1 Method of determining formation resistivity utilizing combined measurements of inductive and galvanic logging instruments |
| 08/08/1995 | US5440296 Coil assembly for electronic article surveillance system |
| 08/08/1995 | US5439800 Offshore petroleum exploration system |
| 08/03/1995 | WO1995020768A1 Miniaturized planar-design coil assembly for the detection of ferromagnetic materials |
| 08/03/1995 | DE4442441A1 Miniaturisierte Spulenanordnung hergestellt in Planartechnologie zur Detektion von ferromagnetischen Stoffen Miniaturized coil assembly manufactured in planar technology for the detection of ferromagnetic materials |
| 08/02/1995 | EP0665447A2 Method of eliminating the effect of electromagnetic coupling between a pair of receivers |
| 08/01/1995 | US5438267 Single-switching method of eliminating the effect of electromagnetic coupling between a pair of receivers |
| 08/01/1995 | US5438266 Instrument to locate buried conductors by providing an indication of phase reversal of the signal utilizing the odd harmonic and the even harmonic when a vertical axis coil passes over one of the buried conductors |
| 08/01/1995 | US5438265 Metallic cable-locating apparatus and method having an image capturing means |
| 07/27/1995 | WO1995020205A1 Metal detection system |
| 07/27/1995 | WO1995020174A1 Method of interpreting potential field data |
| 07/27/1995 | WO1995020173A1 Method and apparatus for measurement-while-drilling utilizing improved antennas |
| 07/27/1995 | WO1995020171A1 Process and device for detecting vital functions in living bodies |
| 07/27/1995 | WO1995020170A1 Process and device for sensing living bodies |
| 07/27/1995 | CA2182001A1 Method of interpreting potential field data |
| 07/20/1995 | WO1995019490A1 Method of creating a borehole in an earth formation |