| 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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| 04/29/1998 | EP0838697A2 Apparatus for probing a conductive body and its application in a vehicle-airbag control system |
| 04/28/1998 | US5745384 System and method for detecting a signal in a noisy environment |
| 04/23/1998 | CA2218209A1 Method for determining resistivity derived porosity and porosity derived resistivity |
| 04/22/1998 | EP0837344A2 Method and apparatus for detection of metallic objects |
| 04/22/1998 | EP0836667A1 Locating a discrete in-ground boring device |
| 04/21/1998 | US5742234 Particle detection and destruction in fluid systems |
| 04/21/1998 | US5742166 Seismic activity predictor including a dielectric for receiving precursor seismic electromagnetic waveforms |
| 04/16/1998 | WO1998015851A1 Magnetic interrogation techniques |
| 04/15/1998 | EP0835463A1 Nmr system and method for formation evaluation using diffusion and relaxation log measurements |
| 04/15/1998 | EP0745038B1 Seat occupant detection system |
| 04/15/1998 | CN1179215A Process and device for producing transponder unit and transponder unit thus produced |
| 04/15/1998 | CN1179214A Determining paratmeter of a component in a composition |
| 04/15/1998 | CN1179213A Determining parameter in physical system |
| 04/14/1998 | US5739690 Crossed-loop resonator structure for spectroscopy |
| 04/14/1998 | US5739442 Method for monitoring conditions of objects including edge detecting and travel direction reversing steps |
| 04/14/1998 | CA2061310C Three axis magnetometer sensor field alignment and registration |
| 04/08/1998 | EP0834091A1 Spatial magnetic interrogation |
| 04/08/1998 | EP0834089A1 Nmr logging of natural gas reservoirs |
| 04/08/1998 | CN1178593A Method for detecting an electroconductive element in a document |
| 04/07/1998 | US5736860 Inductive logging system having multiple coils from which are selected a receiver and a counter-receiver |
| 04/02/1998 | WO1998013708A1 Multi-layer magnetic tag |
| 04/02/1998 | DE19641392A1 Sensor for detecting railway vehicle wheels |
| 04/02/1998 | DE19641196A1 Detection method for metal object e.g. bomb in ground |
| 03/31/1998 | US5734338 Vehicle detector with automatic sensitivity adjustment |
| 03/30/1998 | CA2216738A1 Well logging data interpretation systems and method |
| 03/26/1998 | WO1998012579A1 Waveguide disturbance detection method |
| 03/26/1998 | WO1998012573A1 Concealed weapons detection system |
| 03/26/1998 | WO1998006924A3 Combined electric-field telemetry and formation evaluation method and apparatus |
| 03/25/1998 | EP0831339A2 Method and display arrangement showing the detected objects in a space surrounded by a door frame |
| 03/25/1998 | EP0830733A1 Electromagnetic sensor for detecting a target |
| 03/25/1998 | EP0830618A1 Range gated strip proximity sensor |
| 03/25/1998 | EP0830566A1 Light beam range finder |
| 03/25/1998 | EP0830522A1 Excavator data acquisition and control system and process |
| 03/24/1998 | US5731996 Dipole moment detector and localizer |
| 03/19/1998 | WO1997050000A3 Advanced metal detection equipment using fluxgate magnetometers |
| 03/19/1998 | DE19740774A1 Inductive proximity switch for electrical and electronic switching, measurement and control circuit |
| 03/18/1998 | EP0829736A2 Measuring earth magnetic field distorsions and object sensor embodying the method |
| 03/18/1998 | EP0829020A2 Narrow field electromagnetic sensor system and method |
| 03/17/1998 | US5729143 Metal detector with nulling of imbalance |
| 03/17/1998 | US5729134 Apparatus for detecting underwater magnetic sources with impulse signaling |
| 03/17/1998 | US5729130 Tracking and holding in a DAC the peaks in the field-proportional voltage in a slope activated magnetic field sensor |
| 03/12/1998 | WO1998010313A1 Method for detecting, identifying and following optically invisible objects |
| 03/12/1998 | WO1998010310A1 Oblique scanning ground penetrating radar |
| 03/12/1998 | WO1998010239A1 Capacitance sensor |
| 03/11/1998 | EP0799428A4 An impulse radar with swept range gate |
| 03/11/1998 | CN1037715C Method and device for sensing and identifying electrical cables |
| 03/10/1998 | US5726628 Metal detector system |
| 03/10/1998 | US5726581 3-D capaciflector |
| 03/05/1998 | WO1998009183A1 Passive geophysical prospecting apparatus and method based upon detection of discontinuities associated with extremely low frequency electromagnetic fields |
| 03/05/1998 | DE19639044A1 Detection of objects with measuring signals in region e.g. door frame to be tested are radiated |
| 03/05/1998 | CA2264190A1 Passive geophysical prospecting apparatus and method based upon detection of discontinuities associated with extremely low frequency electromagnetic fields |
| 03/04/1998 | EP0826984A2 Sensor circuit with frequency changing capability |
| 03/04/1998 | EP0826137A1 Process for determining the direction of the earth's magnetic field |
| 03/04/1998 | CN1174998A Radar instrument for mine shaft geology |
| 03/03/1998 | US5724044 Electrically scanning microwave radiometer |
| 03/03/1998 | US5724043 Variable frequency microwave tropopause sensor system and method |
| 03/03/1998 | US5724024 Device for detecting the presence of persons on seats |
| 02/26/1998 | WO1998008115A1 Surface penetrating object detection system |
| 02/26/1998 | WO1998008106A1 Non-obtrusive weapon detection system and method for discrimination between a handgun and other metal objects |
| 02/26/1998 | WO1997047976A3 Device for detection of the presence of an electrically conducting object |
| 02/25/1998 | EP0825459A2 Electrical power cable underground-laying depth measuring method |
| 02/25/1998 | EP0825456A2 Detecting the condition of a concealed object |
| 02/25/1998 | EP0825419A2 Object orientation sensor device and method |
| 02/25/1998 | EP0729590B1 Method and apparatus for measuring geophysical data |
| 02/25/1998 | EP0704064B1 Magnetic screen |
| 02/25/1998 | CN1037550C Apparatus for locating buried conductors |
| 02/24/1998 | US5721492 For use in a borehole |
| 02/24/1998 | US5721491 Determining electrical conductivity of an earth layer |
| 02/24/1998 | US5721489 Metal detector method for identifying target size |
| 02/24/1998 | US5720355 Drill bit instrumentation and method for controlling drilling or core-drilling |
| 02/24/1998 | US5720354 Trenchless underground boring system with boring tool location |
| 02/19/1998 | WO1998007052A1 Anti-shoplifting security system |
| 02/19/1998 | WO1998007051A1 Phase shift detection and measurement circuit for capacitive sensor |
| 02/19/1998 | WO1998006924A2 Combined electric-field telemetry and formation evaluation method and apparatus |
| 02/19/1998 | DE19633008A1 Ship assisted detection of floating mines using unmanned aircraft with own drive |
| 02/19/1998 | DE19580095C2 Proximity sensor using magneto-resistive elements and permanent magnet |
| 02/17/1998 | US5719501 Mine simulation system having an electromagnetic field disturbing device |
| 02/17/1998 | US5719500 Process for detecting metallic items including a search path defined by a linear movement with a superimposed rotational movement along a curved closed path |
| 02/11/1998 | EP0822778A1 Catheter depth, position and orientation location system |
| 02/11/1998 | EP0760147B1 Anti counterfeit apparatus and method |
| 02/11/1998 | CN1173226A An impulse radar with swept range gate |
| 02/10/1998 | US5717334 Methods and apparatus to produce stick-slip motion of logging tool attached to a wireline drawn upward by a continuously rotating wireline drum |
| 02/05/1998 | DE19731960A1 System for detecting metal particles in flowline circulated coolant |
| 01/28/1998 | EP0820686A1 Compact transponder and method for making same |
| 01/27/1998 | US5712566 Nuclear magnetic resonance apparatus and method |
| 01/27/1998 | US5711381 Bore location system having mapping capability |
| 01/22/1998 | DE19628908A1 Detection and localisation process for hot spots in waste volumes and landfills |
| 01/21/1998 | EP0819951A1 Method and apparatus for detection of diastrophism |
| 01/20/1998 | US5710511 Electromagnetic logging tool for logging a wellbore |
| 01/20/1998 | US5709225 Combined magnetic field detector and activity detector employing a capacitive sensor, for a medical implant |
| 01/20/1998 | CA2106085C Stud finder with level indicator |
| 01/15/1998 | WO1998001770A1 Method of detecting and classifying objects by means of radar |
| 01/15/1998 | CA2258028A1 Method of detecting and classifying objects by means of radar |
| 01/08/1998 | WO1998000733A1 Electrical logging of a laminated earth formation |
| 01/08/1998 | WO1998000732A1 Ultrasound-hall effect imaging system and method |
| 01/08/1998 | WO1998000694A2 Process and article for determining the residence time of a food particle |
| 01/08/1998 | CA2255068A1 Process and article for determining the residence time of a food particle |
| 01/07/1998 | EP0816872A1 Borehole probe with one or more radar antennae |
| 01/07/1998 | EP0816871A2 Well logging apparatus and method |
| 01/07/1998 | EP0816870A2 Metal detector and process for operating a metal detector |