| 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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| 12/12/2000 | US6160401 Boring technique using locate point measurements for boring tool depth prediction |
| 12/12/2000 | US6160322 Pulse signal generation method and apparatus |
| 12/12/2000 | CA2205544C Method and apparatus for detecting underground utility conveyances |
| 12/07/2000 | WO2000073821A1 System and method of multi-mode cantilever and multi-mode torsional micro-oscillators for force microscopy |
| 12/06/2000 | EP1058132A1 Method for the electromagnetic detection of conducting objects using a base of stored signals |
| 12/06/2000 | EP1058124A2 Method and apparatus to determine the direction of arrival of electromagnetic waves |
| 12/06/2000 | EP1057136A1 Induction sensor |
| 12/06/2000 | EP1057047A1 Method and apparatus for nuclear magnetic resonance measuring while drilling |
| 12/06/2000 | CN2409529Y Solid miniature lateral logging polar plate |
| 12/05/2000 | USRE36979 Surface conforming flexible eddy current probe for scanning varying surface contours |
| 12/05/2000 | US6157320 Enhanced paint for microwave/millimeter wave radiometric detection applications and method of road marker detection |
| 12/05/2000 | US6157195 Formation resistivity measurements from within a cased well used to quantitatively determine the amount of oil and gas present |
| 12/05/2000 | US6157190 Detecting equipment for detecting magnetic minute substance in an object to be inspected |
| 11/30/2000 | DE19924972A1 Arrangement for locating, marking, position determination of munitions above, below ground has air cushion vehicle, location system(s), marking device(s), position determination |
| 11/28/2000 | US6154167 Excitation method and ultra-wide bandwidth antenna for ground penetrating radar systems |
| 11/28/2000 | US6154137 Identification tag with enhanced security |
| 11/23/2000 | WO2000070600A1 Measuring and recording motion in musical keyboard |
| 11/23/2000 | WO2000070368A1 Proximity sensor method and apparatus that is insensitive to temperature, noise and length of wire |
| 11/23/2000 | WO2000070299A1 A method and apparatus for controlling the temperature stability of an inductor using a magnetically coupled metallic object |
| 11/23/2000 | CA2372866A1 Proximity sensor method and apparatus that is insensitive to temperature, noise and length of wire |
| 11/22/2000 | EP1053487A1 Nuclear magnetic resonance sensing apparatus and techniques |
| 11/22/2000 | CN1274426A Resistivity log correction method |
| 11/21/2000 | US6150822 Sensor in bit for measuring formation properties while drilling |
| 11/21/2000 | US6150810 Method for detecting the presence of a ferromagnetic object using maximum and minimum magnetic field data |
| 11/16/2000 | WO2000068044A1 Occupant detection system |
| 11/16/2000 | WO2000054076B1 Articulated robotic scanner |
| 11/16/2000 | WO2000041306A3 Micropower capacitance-based proximity sensor |
| 11/16/2000 | DE19930545C1 Measurement cable especially for monitoring flat seals e.g. fluid permeable concrete or plastic sealing rails |
| 11/15/2000 | CN1273632A Measurement of flow fractions, flow velocities and flow rates of multiphase fluid using NMR sensor |
| 11/14/2000 | US6147636 Synthetic aperture processing for diffusion-equation-based target detection |
| 11/14/2000 | US6147497 Using electrical impedance tomography to map subsurface hydraulic conductivity |
| 11/14/2000 | US6147496 Determining electrical conductivity of a laminated earth formation using induction logging |
| 11/14/2000 | US6147489 Method and apparatus for measuring total nuclear magnetic resonance porosity |
| 11/09/2000 | WO2000067047A1 A method and apparatus for determining the resistivity of a formation through which a cased well passes |
| 11/08/2000 | CN2405234Y Short and wing type float drum like cable spreading equipment |
| 11/08/2000 | CN1272921A Magnetic sensor device and current sensor device |
| 11/07/2000 | US6144300 Spatial magnetic interrogation |
| 11/07/2000 | US6144206 Magnetometer with waveform shaping |
| 11/02/2000 | WO2000065380A1 A method and apparatus for determining the resistivity of a formation through which a cased well passes |
| 11/02/2000 | WO2000065379A1 Metal detector |
| 11/02/2000 | WO2000064709A1 Capacitive sensor, notably a seat occupation sensor for motor vehicles, and method for detecting the presence of an object |
| 11/02/2000 | EP1048534A1 Capacitive sensor, especially automotive occupancy sensor and method for detecting the presence of an object using autocorrelation of the signal |
| 11/02/2000 | EP1047748A1 Conductive medium for openhole logging and logging while drilling |
| 10/31/2000 | US6140819 Continuous-depth-indicating underground pipe and cable locator |
| 10/31/2000 | US6140818 NMR logging tool and method for fast logging |
| 10/31/2000 | US6140817 Magnetic resonance well logging method and apparatus |
| 10/31/2000 | US6140816 Method of determining the permeability of sedimentary strata |
| 10/31/2000 | CA2113662C Dielectric optical fiber cables which are magnetically locatable |
| 10/26/2000 | WO2000063718A1 Systems and methods for locating subsurface objects |
| 10/26/2000 | WO2000045195A8 Electromagnetic wave resistivity tool having tilted antenna |
| 10/26/2000 | DE19901174C1 Verfahren und Vorrichtung zur elektromagnetischen Detektion von Objekten Method and apparatus for electromagnetic detection of objects |
| 10/26/2000 | DE19847688C2 Verfahren und Anwendung desselben in einem elektromagnetischen Sensor zur Entdeckung von Fremdkörpern in einem Medium mittels Radar The method and use thereof in an electromagnetic sensor for the detection of foreign bodies in a medium by means of radar |
| 10/25/2000 | EP1046066A1 Method for detecting fractures in logging signals concerning a zone in an environment |
| 10/25/2000 | EP1046065A1 Electromagnetic logging tool with reflector for directional sensing |
| 10/24/2000 | US6137412 Marker for use in an electronic article surveillance system |
| 10/24/2000 | US6137281 Magnetic back-to-back locator |
| 10/19/2000 | WO2000041006A8 Retrievable resistivity tool for measurement while drilling |
| 10/19/2000 | DE19916950A1 Radio communication device for child monitoring system, has main transmitter attached to radio terminal, which is connected with main receiver of monitoring terminal through radio contact |
| 10/19/2000 | DE19913872A1 Sensor with failure monitoring system |
| 10/18/2000 | EP1044247A1 Water soluble invert emulsions |
| 10/18/2000 | EP0995129A4 Method and apparatus for acoustic detection of mines and other buried man-made objects |
| 10/18/2000 | EP0820686B1 Compact transponder and method for making same |
| 10/17/2000 | US6133829 Walk-through metal detector system and method |
| 10/17/2000 | US6133735 Magnetic resonance logging method and apparatus |
| 10/17/2000 | US6133734 Method and apparatus for evaluating an earth formation using nuclear magnetic resonance techiques |
| 10/17/2000 | CA2232022C Method and apparatus for measuring total nuclear magnetic resonance porosity |
| 10/12/2000 | WO2000060780A1 Method and apparatus for determining position in a pipe |
| 10/12/2000 | WO2000060343A1 Casing joint locator methods and apparatus |
| 10/12/2000 | WO2000025098A3 Capacitive measuring device |
| 10/11/2000 | EP1043604A1 Method for determining the resistivity of formations through a borehole |
| 10/10/2000 | US6130539 Automatic gain control for a line locator |
| 10/10/2000 | CA2143727C Method and apparatus for balancing the electrical output of the receiver coils of an induction logging tool |
| 10/05/2000 | WO2000058758A2 Induction logging |
| 10/05/2000 | DE19932689C1 Metal object detection method for continuous material web detects phase and/or amplitude variations in AC electromagnetic field caused by metal object |
| 10/05/2000 | CA2283530A1 Apparatus for obtaining worldwide data on the earth's resonance |
| 10/04/2000 | EP1041336A2 Sensor apparatus and safety apparatus for protecting approach to machines |
| 10/04/2000 | EP1040371A1 Airborne electromagnetic system |
| 10/04/2000 | EP1040370A1 Linear perturbation method for kalman filter tracking of magnetic field sources |
| 10/04/2000 | EP1040369A1 Magnetic object tracking based on direct observation of magnetic sensor measurements |
| 10/03/2000 | US6127827 Method of identifying a buried cable by applying a low frequency signal to the cable and detecting the resultant field |
| 10/03/2000 | US6127821 System for adjusting a magnetic sensor to detect the presence of ferrous objects |
| 09/28/2000 | WO2000057198A1 Permeability-modulated carrier referencing |
| 09/28/2000 | WO2000057136A1 Detection of passing magnetic articles while adapting the detection threshold |
| 09/28/2000 | CA2365394A1 Permeability-modulated carrier referencing |
| 09/27/2000 | EP1039313A1 Intrusion detection process and device |
| 09/27/2000 | EP0892908A4 Mutual induction correction |
| 09/27/2000 | EP0815474B1 Determining a parameter in a physical system |
| 09/27/2000 | CN1268218A Measurement of flow fractions, flow velocities, and flow rates of a multiphase fluid using ESR sensing |
| 09/27/2000 | CN1267781A Plate for high-temperature, high-pressure and micro-resistivity scanning and imaging logging instrument |
| 09/27/2000 | CN1056906C Method for measuring direction of borehole |
| 09/26/2000 | USRE36881 Gradient system for an NMR tomograph |
| 09/26/2000 | US6125203 Method for automatically determining stratification beds in a site |
| 09/26/2000 | US6124713 Matching amplifier having an extremely high input resistance for an induction probe |
| 09/26/2000 | US6124712 Apparatus and method for imaging metallic objects using an array of giant magnetoresistive sensors |
| 09/21/2000 | WO2000055651A1 Method for downhole logging |
| 09/21/2000 | WO2000055650A1 Method for electrokinetic downhole logging |
| 09/21/2000 | DE19912407A1 Transporter with metal detection device for use in harvesting or chaffing machinery has a roller with magnets contained internally, the fields of which are changed by the presence of magnetic metallic parts |
| 09/19/2000 | US6122537 Method of and apparatus for detecting vital functions of living bodies |
| 09/19/2000 | US6121774 Method for eliminating ringing during a nuclear magnetic resonance measurement |
| 09/19/2000 | US6121773 Longitudinal NMR well logging apparatus and method |