| 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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| 09/29/1997 | CA2200533A1 Pulsed interrogation signal in harmonic eas system |
| 09/24/1997 | EP0797107A2 Object detector and object detector system |
| 09/24/1997 | EP0796446A2 Method and apparatus for logging underground formations using radar |
| 09/24/1997 | EP0796445A1 Determining electrical conductivity of an earth layer |
| 09/23/1997 | US5670886 Method and apparatus for sensing proximity or position of an object using near-field effects |
| 09/23/1997 | US5670882 Ferrous target identification system with magnetic field polarity and gradient indication |
| 09/23/1997 | US5670880 Apparatus for testing magnetic properties of sheet material such as bank notes or papers of value |
| 09/23/1997 | US5670878 Inspecting a conductive object with a steady state magnetic field and induced eddy current |
| 09/18/1997 | WO1997034222A1 Method and apparatus for radiofrequency identification tags |
| 09/18/1997 | WO1997034168A2 System and method for performing inversion on lwd resistivity logs with enhanced resolution |
| 09/18/1997 | WO1997034167A1 Pulse sequences and interpretation techniques for nmr measurements |
| 09/18/1997 | WO1997034166A1 Determining a fluid fraction in an earth formation |
| 09/18/1997 | WO1997034165A2 Locatable locating tape for finding in particular non-metallic cables and pipelines buried in the ground |
| 09/18/1997 | WO1997034125A1 Process for determining the direction of the earth's magnetic field |
| 09/16/1997 | US5668475 To be disposed in a borehole |
| 09/10/1997 | EP0793812A1 Method and apparatus for detecting underground utility conveyances |
| 09/10/1997 | EP0793795A1 Mine-clearer |
| 09/09/1997 | US5666057 Method of correcting receiver signals in an induction well logging tool |
| 09/04/1997 | WO1997032179A1 Location system with field actuation sequences |
| 09/03/1997 | EP0793242A1 Magnetic element and process for producing the same |
| 09/03/1997 | EP0793241A1 Magnetic element |
| 09/03/1997 | EP0793119A2 Well logging method and apparatus |
| 09/03/1997 | EP0792467A1 Capacitive touch detectors |
| 09/02/1997 | US5663642 Resonant inductive debris detector |
| 09/02/1997 | US5663499 Method for estimating permeability from multi-array induction logs |
| 08/28/1997 | WO1997031275A1 Method and device for detecting an object in a region to be monitored |
| 08/28/1997 | WO1997031238A1 Displacement-current method and apparatus for resolving presence, orientation and activity in a defined space |
| 08/28/1997 | DE19610003C1 Directional metal detector for refuse collection vehicle |
| 08/28/1997 | DE19606675A1 Verfahren und Vorrichtung zum Detektieren eines Objekts in einem zu überwachenden Bereich Method and apparatus for detecting an object in an area to be monitored |
| 08/28/1997 | CA2246993A1 Method and device for detecting an object in a region to be monitored |
| 08/28/1997 | CA2198810A1 Magnetic element and process for producing the same |
| 08/28/1997 | CA2198809A1 Magnetic element |
| 08/26/1997 | US5661698 Method for modelling the spatial distribution of geometric objects in an environment, such as faults in a geologic formation |
| 08/26/1997 | US5661490 Time-of-flight radio location system |
| 08/26/1997 | US5661402 Sealed modular downhole antenna |
| 08/26/1997 | US5659985 Excavator data acquisition and control system and process |
| 08/21/1997 | DE19605305A1 Metal detector for objects in earth |
| 08/20/1997 | EP0790507A1 Metal detector with pivoting detector coil, which is lockable in any position |
| 08/20/1997 | CN1157657A Range-gated field disturbance sensor with range-sensitivity compensation |
| 08/19/1997 | US5659247 Device for detecting metal objects passing through an opening |
| 08/19/1997 | US5659246 Magnetic sensor having an engaging portion |
| 08/14/1997 | WO1997029463A1 Sensor for remote detection of objects |
| 08/14/1997 | WO1997029391A1 Device for sensing presence of an electrically conducting object |
| 08/14/1997 | WO1997029381A2 Process and device for determining a cable run in a cable carrier system of a technical installation and detector used therein |
| 08/13/1997 | EP0788640A1 Method of detecting labels with amorphous magneto-elastical tapes |
| 08/13/1997 | CN1157041A Nuclear magnetic resonance determination of petrophysical properties of geologic structures |
| 08/12/1997 | US5656930 Method for determining the anisotropic properties of a subterranean formation consisting of a thinly laminated sand/shale sequence using an induction type logging tool |
| 08/07/1997 | WO1997028466A1 Borehole logging system |
| 08/07/1997 | WO1997027905A1 Golf ball with a tag, and detecting system |
| 08/06/1997 | EP0788127A1 Electronic appliance and production method therefor |
| 08/06/1997 | EP0787309A1 Nmr logging of natural gas in reservoirs |
| 08/06/1997 | EP0705447B1 Method and device for sensing and identifying electrical cables |
| 08/06/1997 | CN1156255A General inductive near detector |
| 08/05/1997 | US5654639 Induction measuring device in the presence of metal walls |
| 08/05/1997 | US5654638 Plural Frequency method and system for identifying metal objects in a background environment |
| 08/05/1997 | US5654637 Method for detecting buried high conductivity objects including scaling of voltages for eliminating noise of a particular depth |
| 08/05/1997 | US5654615 Storage compartment sensor system for use with an automotive vehicle convertible roof |
| 07/31/1997 | WO1997027496A1 Underground pipe locating system |
| 07/31/1997 | DE19602463A1 Wire wool detection device |
| 07/31/1997 | CA2244173A1 Underground pipe locating system |
| 07/30/1997 | EP0786673A2 Method and apparatus for probing and inspecting an underground volume |
| 07/30/1997 | EP0786672A1 Object detection apparatus |
| 07/30/1997 | EP0719419B1 Electrode device for protecting and supporting an electrode used for measuring the resistivity of a body of soil |
| 07/30/1997 | CN2258622Y Integral amphibious geological-prospecting radar antenna |
| 07/29/1997 | US5652519 Method and apparatus for measuring pollutants contaminating earth formation |
| 07/24/1997 | DE19600592A1 Drill detecting subterranean explosive devices e.g. buried mines |
| 07/22/1997 | US5650726 Emitter for an electromagnetic tomography measurement system which connects a greater number of windings to a magnetic core at low frequencies than at high frequencies |
| 07/22/1997 | US5650725 Magnetic imager and method |
| 07/22/1997 | US5650719 Detection of passing magnetic articles while periodically adapting detection thresholds to changing amplitudes of the magnetic field |
| 07/22/1997 | US5650236 Magnetic marker |
| 07/22/1997 | US5649546 Metal detector for the localization of a metallic foreign body penetrated or implanted into a human or animal body |
| 07/17/1997 | WO1997025519A1 Trenchless underground boring system with boring tool location |
| 07/17/1997 | CA2241808A1 Trenchless underground boring system with boring tool location |
| 07/16/1997 | EP0784215A2 Transducer arrangement and method to detect physical quantities |
| 07/16/1997 | EP0783709A1 Swept range gate radar system for detection of nearby objects |
| 07/16/1997 | EP0783673A1 Variable frequency microwave tropopause sensor system and method |
| 07/08/1997 | US5646611 System and method for indirectly determining inclination at the bit |
| 07/08/1997 | US5646539 Multi-purpose capacitive sensor |
| 07/08/1997 | US5646533 Induction measurement in the presence of metallic, magnetic walls |
| 07/08/1997 | US5646528 Magnet assembly |
| 07/08/1997 | US5645065 Catheter depth, position and orientation location system |
| 07/03/1997 | WO1997023848A1 Method for detecting an electroconductive element in a document |
| 07/03/1997 | WO1997023786A1 Method and system for sensing and locating a person, e.g. under an avalanche |
| 07/03/1997 | DE19549314A1 Electronic monitoring system for detecting body movements of buried person |
| 07/03/1997 | DE19549313A1 Living thing detector for closed metal case e.g. in freight container locked by door or hatch |
| 07/02/1997 | EP0782014A2 Magnetic element |
| 07/02/1997 | EP0782012A2 Plural frequency method and system for identifying metal objects in a background environment using a target model |
| 07/02/1997 | EP0781421A1 Vehicle detector system with periodic source filtering |
| 07/01/1997 | US5644314 For detecting an object with a transmitting/receiving signal means |
| 07/01/1997 | US5644237 Method and apparatus for precisely locating a buried utility conveyance |
| 07/01/1997 | US5644236 Method and apparatus for simultaneously testing the inductance of detection coils in a multiple channel metal detector |
| 07/01/1997 | US5644231 For use in a well logging apparatus |
| 07/01/1997 | US5644228 Permanent magnet assembly with MR and DC compensating bias |
| 07/01/1997 | US5644226 Magnetic detector having a bias magnet and magnetoresistive elements shifted away from the center of the magnet |
| 06/27/1997 | CA2194047A1 Magnetic element |
| 06/26/1997 | DE19548532A1 Verfahren zur Detektion eines elektrisch leitfähigen Elements in einem Dokument A method for detecting an electroconductive element in a document |
| 06/26/1997 | DE19547842A1 Detection of occupancy especially of passenger seat in motor vehicle |
| 06/25/1997 | EP0780706A2 Apparatus for locating ammunition in the ground |
| 06/25/1997 | EP0780705A2 Electromagnetic search method and probe assembly for locating underground objects |
| 06/25/1997 | EP0780704A2 Plural frequency method and system for identifying metal objects in a background environment |