Patents
Patents for G01V 3 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation (25,929)
09/1996
09/10/1996US5555337 Surface wave guideline and object detecting device using surface wave guideline
09/10/1996US5554973 Electrostatic capacitance-type sensor
09/10/1996US5554934 Method and apparatus for locating a buried element of inductive material using probe with detector coils
09/10/1996US5553407 Excavator data acquisition and control system and method of use
09/06/1996WO1996018121A3 Method and apparatus for logging underground formations using radar
09/05/1996DE19505759A1 Schalter mit einem Hall-Differenz-IC für berührungslose Positionsabfrage, insbesondere im Kfz-Bereich Switch with a differential Hall IC for contactless position sensing, especially in the automotive sector
09/04/1996EP0730144A2 Particle detection and destruction in fluid systems
09/04/1996EP0729590A1 Method and apparatus for measuring geophysical data
09/03/1996US5552786 Method and apparatus for logging underground formations using radar
09/03/1996US5552709 NMR sample cell
09/03/1996US5552705 Non-obtrusive weapon detection system and method for discriminating between a concealed weapon and other metal objects
09/03/1996US5552589 Permanent magnet assembly with MR element for detection/authentication of magnetic documents
09/03/1996US5551287 Borehole logging assembly
09/03/1996US5551158 Method for measuring position and angle
09/03/1996CA2049576C Device for location of embedded objects
08/1996
08/29/1996WO1996026574A1 Switch with hall difference ic for contactless position sensing, in particular in motor vehicles
08/28/1996EP0729122A1 Self-biased magnetostrictive element for electronic article surveillance systems
08/28/1996EP0729039A2 Method and arrangement for electromagnetic object detection
08/28/1996CN1129985A Conductor locator adapter for electronic markers
08/27/1996US5550473 Method for locating thin bed hydrocarbon reserves utilizing electrical anisotropy
08/27/1996US5549008 Device and method for characterizing a medium comprising at least a conductive part
08/27/1996CA2081785C Dipmeter apparatus and method for investigating earth formations
08/23/1996CA2163185A1 Self-biased magnetostrictive element for magnetomechanical electronic article surveillance systems
08/22/1996WO1996025676A1 Method and apparatus for determining 'attractors'
08/22/1996DE19504841A1 Indicating instrument for magnetometer for locating metallic interference body
08/21/1996CN1129333A Resonant tag label detection system and method utilizing multiple frequency response
08/20/1996US5548219 Digital two frequency generator for use in borehole heterodyne measurement systems
08/14/1996EP0726458A2 Method and apparatus for measuring samples and for localizing a first substance within a surrounding second substance by means of nuclear magnetic resonance
08/14/1996EP0725960A1 Capacitive detector device and alarm system
08/13/1996CA2097962C Non-concentricity compensation in position and orientation measurement systems
08/08/1996WO1996023957A1 Method of monitoring fluids entering a wellbore
08/06/1996US5543799 Swept range gate radar system for detection of nearby objects
08/06/1996US5543715 Method and apparatus for measuring formation resistivity through casing using single-conductor electrical logging cable
08/06/1996US5543714 For producing a map of a geological field
08/01/1996WO1996023236A2 Device for the detection of objects, especially explosive objects, lying in the earth
08/01/1996WO1996023235A1 Cable detection apparatus
08/01/1996DE19502455A1 Vorrichtung zum Aufspüren von im Erdreich befindlichen Gegenständen, insbesondere explosiver Gegenstände Apparatus for detecting located in the ground objects, especially explosive objects
08/01/1996CA2211216A1 Device for the detection of objects, especially explosive objects, lying in the earth
07/1996
07/30/1996US5541605 Swept range gate short range radar system
07/30/1996US5541517 Method for drilling a borehole from one cased borehole to another cased borehole
07/30/1996US5541516 Locator equipment with self-integrity test capability
07/30/1996US5541507 Device for detecting the position of a magnet by analyzing movement of a current-fed coil disposed in the magnetic field of the magnet
07/25/1996DE19601551A1 Electrostatic sensor for detecting presence of moving object
07/24/1996EP0723252A1 Device for testing the magnetic properties of sheet material, e.g. bank notes or valuable papers
07/24/1996EP0723166A1 Capacitive sensor
07/24/1996EP0722290A1 Magnetic determination of position and orientation
07/24/1996EP0630485A4 Method and apparatus for downhole measurement of fluid conductivity and hydrocarbon volume during formation testing.
07/23/1996US5539323 Sensor for articles such as wafers on end effector
07/23/1996US5538803 Discontinuous change in magnetism with applied magnetic field
07/19/1996CA2165631A1 Capacitive sensor
07/18/1996WO1996021872A1 Geophysical methods and apparatus for determining the hydraulic conductivity of porous materials
07/18/1996CA2209132A1 Geophysical methods and apparatus for determining the hydraulic conductivity of porous materials
07/17/1996EP0722097A1 Device for induction logging in the presence of metallic walls
07/17/1996EP0722096A1 Device for mapping a medium by induction measurement
07/17/1996EP0722095A1 Determination of the porosity and permeabilty of a geological formation based on the electrofiltration phenomenon
07/17/1996CN1126841A Circuit-like metallic foil sheet for resonance frequency characteristic tag and the like and process for fabricating it
07/16/1996US5537045 Detection and location system for monitoring changes in resistivity in three dimensions
07/16/1996US5537041 Discriminating time domain conducting metal detector utilizing multi-period rectangular transmitted pulses
07/10/1996EP0721111A2 A method for steering a transmitter array in a logging tool
07/04/1996WO1996020416A1 Process and device for testing a medium
07/03/1996EP0720029A2 Location of remote conductors
07/03/1996EP0719420A1 Apparatus and method for locating a medical tube in the body of a patient
07/03/1996EP0719419A1 Electrode device for protecting and supporting an electrode used for measuring the resistivity of a body of soil
07/03/1996CN1125984A Method and device for sensing and identifying electrical cables
07/02/1996USH1561 Method and apparatus for detection of seismic and electromagnetic waves
07/02/1996US5532598 Amorphous metal tagging system for underground structures including elongated particles of amorphous metal embedded in nonmagnetic and nonconductive material
07/02/1996US5532587 Magnetic field analysis method and apparatus for determining stress characteristics in a pipeline
07/02/1996US5532584 MR sensor including calibration circuit wherein signals are averaged for determining a correction factor and pole pieces are shaped to reduce field in gap therebetween
07/02/1996US5531434 Multiple page sensor for automatic document feeder
06/1996
06/27/1996WO1996019737A1 An impulse radar with swept range gate
06/26/1996EP0718465A1 Magnetic field producing cable for an underground excavator
06/26/1996EP0717855A1 Process and system for detecting hazardous abandoned objects
06/26/1996CN1125483A Electrical logging system
06/25/1996US5530359 Borehole logging tools and methods using reflected electromagnetic signals
06/25/1996US5530358 For use in a wellbore for communicating electromagnetic energy
06/25/1996US5530357 For determining the path of an underground pipe
06/20/1996DE19539482A1 Pressure sensor for protecting motor vehicle drop=head against damage
06/18/1996US5528556 Combination well logging device
06/18/1996US5528138 Resonant inductive debris detecting apparatus
06/13/1996WO1996018121A2 Method and apparatus for logging underground formations using radar
06/13/1996WO1996018120A1 Determining electrical conductivity of an earth layer
06/13/1996CA2207303A1 Method and apparatus for logging underground formations using radar
06/12/1996EP0716393A2 Magnetic marker and manufacturing method therefor
06/12/1996EP0716320A1 Apparatus for induction measurements through metallic magnetic walls
06/12/1996CN2229089Y Transformer type magnetic wave detector
06/11/1996US5525907 Active impulse magnetometer with bipolar magnetic impulse generator and fast fourier transform receiver to detect sub-surface metallic materials
06/11/1996US5525904 Determination of rock core characteristics
06/11/1996US5525843 Seat occupant detection system
06/10/1996CA2164809A1 Virtual induction sonde for steering transmitted and received signals
06/06/1996WO1996017261A1 Method of minimizing dead-periods in order to obtain hardware optimized gradient waveforms
06/05/1996EP0715188A2 Well logging apparatus and method with borehole compensation
06/05/1996EP0715187A1 An electrical logging sensor and its method of manufacture
06/05/1996EP0714521A1 Method and apparatus for compensation of field distortion in a magnetic structure using spatial filter
06/05/1996EP0714519A1 Entropy based signal transmission, reception and signal analysis method and apparatus
06/05/1996CN1124060A Sensor for articles on an end effector
06/05/1996CN1123862A Method and apparatus for exploration of earth layer in front of digging machine
06/04/1996US5523760 Ultra-wideband receiver
06/04/1996US5523753 Vehicle detector system with periodic source filtering
06/04/1996US5523739 Metal detector for control of access combined in an integrated form with a transponder detector
06/04/1996US5523690 For displaying signal information