| 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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| 11/03/1998 | US5831431 Miniaturized coil arrangement made by planar technology, for the detection of ferromagnetic materials |
| 10/29/1998 | WO1998048267A1 Selective polarization matching filter for triggering and maximizing rapid dieletrokinesis response |
| 10/28/1998 | EP0873465A1 Trenchless underground boring system with boring tool location |
| 10/28/1998 | CN1197214A Method and apparatus for measuring total nuclear magnetic resonance porosity |
| 10/27/1998 | US5828334 Passive aircraft and missile detection device |
| 10/27/1998 | US5828219 Method of detecting faults in the insulation layer of an insulated concealed conductor |
| 10/27/1998 | US5828214 Method and apparatus for resistivity determination by nuclear magnetic resonance measurement |
| 10/22/1998 | WO1998038532A3 Method of earthquake prediction |
| 10/21/1998 | EP0872744A2 Determining conductivity of subterranean formations |
| 10/21/1998 | EP0872700A2 Method and apparatus for detecting mines using radiometry |
| 10/21/1998 | EP0871988A1 Electrode |
| 10/21/1998 | CN1040365C Conductor locator adaptor for electronic markers |
| 10/20/1998 | US5825298 Radio frequency transponder method for identifying geographical locations such as survey traverse points |
| 10/20/1998 | US5825188 Method of mapping and monitoring groundwater and subsurface aqueous systems |
| 10/15/1998 | WO1998045733A1 Near field electromagnetic proximity determination |
| 10/14/1998 | EP0871045A2 Method and apparatus for measuring total nuclear magnetic resonance porosity |
| 10/14/1998 | EP0870207A1 Method and apparatus for determining "attractors" |
| 10/14/1998 | EP0870205A1 Method and system for sensing and locating a person, e.g. under an avalanche |
| 10/13/1998 | US5821753 Method for obtaining magnetic dipole density image data of subterranean object |
| 10/13/1998 | US5819859 Apparatus and method for detecting an underground structure |
| 10/07/1998 | EP0869376A2 Method and apparatus for determining resistivity and dielectric anisotropy parameters of earth formations by using multifrequency and/or multispacing measurements |
| 10/07/1998 | CN1195404A Method and arrangement for determining position of marker in organic cavity |
| 10/01/1998 | WO1998043064A1 Pulse sequence and method for suppression of magneto-acoustic artifacts in nmr data |
| 10/01/1998 | DE19725545C1 Detecting ferromagnetic and electrically conducting non-ferromagnetic objects in ground |
| 09/30/1998 | EP0842440A4 Short range radio locator system |
| 09/29/1998 | US5814989 Method of detecting the presence of a particular substance |
| 09/29/1998 | US5814988 Combination nuclear magnetic resonance and electromagnetic induction resistivity well logging instrument and method |
| 09/23/1998 | EP0866344A2 Method and apparatus for detecting and/or removal of metal scrap |
| 09/23/1998 | EP0865613A1 Composite material structures having reduced signal attenuation |
| 09/23/1998 | EP0742906B1 Use of a miniaturized planar-design coil assembly for the detection of ferromagnetic materials |
| 09/22/1998 | US5812057 Device for finding concealed studs |
| 09/22/1998 | US5811974 Tectonic activity monitoring equipment |
| 09/22/1998 | US5811973 Determination of dielectric properties with propagation resistivity tools using both real and imaginary components of measurements |
| 09/22/1998 | US5811972 Method and apparatus for determining influence of mutual magnetic coupling in electromagnetic propagation tools |
| 09/22/1998 | US5811664 Debris monitoring |
| 09/17/1998 | WO1998040764A1 Locator of electrically conductive objects |
| 09/17/1998 | WO1998040763A1 Prediction of permeability from capillary pressure curves derived with nmr |
| 09/17/1998 | WO1998040728A1 Non-destructive method of determining the position and condition of reinforcing steel in concrete |
| 09/16/1998 | CN1193388A Improvements relating to magnetic tags or markers |
| 09/16/1998 | CN1193387A NMR system and method for formation evaluation using diffusion and relaxution log measurements |
| 09/15/1998 | US5809458 Method of simulating the response of a through-casing electrical resistivity well logging instrument and its application to determining resistivity of earth formations |
| 09/15/1998 | US5809163 Method of characterizing texture heterogeneities of geological formations traversed by a borehole |
| 09/15/1998 | US5806194 Method for conducting moving or rolling check shot for correcting borehole azimuth surveys |
| 09/09/1998 | EP0863412A1 Tube-system for electrical measurements |
| 09/08/1998 | US5805742 Object detection system with minimum-spanning gradient filter for scene clutter suppression |
| 09/08/1998 | US5805110 Method for sensing characteristics of objects within a field |
| 09/08/1998 | US5804713 Apparatus for sensor installations in wells |
| 09/03/1998 | WO1998038532A2 Method of earthquake prediction |
| 09/02/1998 | EP0862067A1 Device and method for detecting, identifying and sorting packages of metal or containing metal parts |
| 09/02/1998 | EP0862065A2 Alarm sensor and antenna arrangement |
| 09/02/1998 | EP0861966A2 Apparatus and method for forming ducts and passageways |
| 09/02/1998 | EP0861650A2 Device for detecting the removal from its holder of a dental handpiece which is connected to a supply line |
| 09/02/1998 | EP0714519A4 Entropy based signal transmission, reception and signal analysis method and apparatus |
| 09/01/1998 | US5802479 Motor vehicle occupant sensing systems |
| 09/01/1998 | US5801537 Method and apparatus for measuring in-place soil density and moisture content |
| 08/27/1998 | WO1998037439A1 Water prospecting method and apparatus |
| 08/26/1998 | EP0702799B1 Electrical logging system |
| 08/26/1998 | CN1191594A Excavator data acquisition and control system and process |
| 08/26/1998 | CN1191317A Ferromagnetic-article sensor |
| 08/26/1998 | CN1191265A Holefinding apparatus having integrated sensors |
| 08/25/1998 | US5798940 In situ oxidation reduction potential measurement of soils and ground water |
| 08/25/1998 | US5798644 Method and apparatus for locating buried conveyances using locating & confirmation signals with an array of sensors |
| 08/20/1998 | WO1998036393A1 Sensor and method for remote detection of objects |
| 08/20/1998 | WO1998036392A1 Magnetostrictive element having optimized bias-field-dependent resonant frequency characteristic |
| 08/20/1998 | DE19806290A1 Integrated distance measuring circuit |
| 08/19/1998 | EP0859468A1 Circuitry for a sensor element |
| 08/18/1998 | US5796363 Imaging radar system |
| 08/18/1998 | US5796253 Time-domain electromagnetic geophysical mapping instruments |
| 08/18/1998 | US5796252 Nuclear magnetic resonance borehole logging apparatus and method for ascertaining a volume of hydrocarbons independent of a diffusion coefficient |
| 08/18/1998 | CA2013734C Multi-mode electronic article surveillance system |
| 08/12/1998 | EP0857497A1 Method and device for the detection and location of buried persons, for example beneath an avalanche |
| 08/11/1998 | US5793329 Object detection apparatus |
| 08/11/1998 | US5793289 Electronic article surveillance system |
| 08/11/1998 | CA2100687C Metal detector with bivariate display |
| 08/06/1998 | WO1998028639A3 Display element for use in a magnetic merchandise monitoring system |
| 08/06/1998 | WO1998028637A3 Method, apparatus, and article of manufacture for solving 3d maxwell equations in inductive logging applications |
| 08/06/1998 | DE19724168C1 Body presence detection device, especially for motor vehicle |
| 08/05/1998 | EP0856784A2 Method and device for the on-board determination of a satellite s position |
| 08/05/1998 | EP0856163A1 Electroseismic technique for measuring the properties of rocks surrounding a borehole |
| 08/05/1998 | CN1189893A Range gated strip proximity sensor |
| 08/04/1998 | US5790685 Apparatus and method for detecting and imaging metal |
| 08/04/1998 | US5790032 Method of and apparatus for detecting living bodies |
| 08/04/1998 | US5790031 Apparatus and method for sensing a rearward facing child seat with error detection |
| 08/04/1998 | US5789919 Magnetoresistance sensing device with increased magnetic field detection efficiency |
| 08/04/1998 | US5789257 Locating diamonds in kimberlite rocks |
| 07/29/1998 | EP0855600A2 Avalanche victim locating transceiving apparatus |
| 07/29/1998 | CN1188897A Method for measuring and compensating for spatially and temporally varying magnetic fields induced by eddy currents |
| 07/28/1998 | US5786696 Metal detector for identifying target electrical characteristics, depth and size |
| 07/28/1998 | CA2096285C Dipole moment detection and localization |
| 07/23/1998 | WO1998032104A1 Tag for identifying recyclable materials |
| 07/23/1998 | DE19712172C1 Metal scrap detection and removal method |
| 07/23/1998 | DE19701753A1 Magnetic field change tracker for electrical disturbance |
| 07/23/1998 | CA2274085A1 Tag for identifying recyclable materials |
| 07/22/1998 | EP0853810A1 Heat-treatment of glassy metal alloy for article surveillance system markers |
| 07/22/1998 | EP0621954B1 Determination of rock core characteristics |
| 07/22/1998 | CN1188549A NMR logging of natural gas reservoirs |
| 07/21/1998 | US5784004 Apparatuses and systems for reducing power consumption in remote sensing applications |
| 07/21/1998 | US5783945 Earthquake forecast method and apparatus with measurement of electrical, temperature and humidity parameters of soil |
| 07/21/1998 | US5783944 Processing method for estimation of magnetizable object or source |
| 07/16/1998 | WO1998030921A2 Magnetometer and dielectrometer detection of subsurface objects |