| 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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| 06/05/2001 | US6242912 System and method for lithology-independent gas detection using multifrequency gradient NMR logging |
| 06/05/2001 | US6242908 Detection of passing magnetic articles while adapting the detection threshold |
| 06/05/2001 | CA2078766C Bedrock exploration system using transient electromagnetic measurements |
| 05/31/2001 | WO2001038902A2 Ground penetrating radar system and method for detecting an object on or below a ground surface |
| 05/31/2001 | US20010001991 Oleaginous fluid, a polar organic solvent, and an electrolytic salt present in a concentration so as to permit the electrical logging of the subterranean well, and a carbon dioxide buffer |
| 05/30/2001 | EP1103827A1 Method for determining a geo-pathogenic area from anomalies in the earth's electrostatic field in residential areas |
| 05/30/2001 | EP1103008A1 Device with capacitive electrodes for measuring subsurface electric characteristics |
| 05/30/2001 | EP1103007A1 Capacitive proximity switch for evaluating minor changes in capacitance and method therefor |
| 05/30/2001 | EP1103003A1 Radar ice sounder with parallel doppler processing |
| 05/29/2001 | US6237418 Method and apparatus for detecting misapplied caps on containers |
| 05/29/2001 | US6237404 Apparatus and method for determining a drilling mode to optimize formation evaluation measurements |
| 05/25/2001 | WO2001037004A1 An object detection system |
| 05/22/2001 | US6236942 System and method for delineating spatially dependent objects, such as hydrocarbon accumulations from seismic data |
| 05/22/2001 | US6236212 Induced polarization system using towed cable carrying transmitters and receivers for identifying minerals on the ocean floor |
| 05/22/2001 | US6236211 Induced polarization method using towed cable carrying transmitters and receivers for identifying minerals on the ocean floor |
| 05/22/2001 | US6236200 Magnetic metal sensor and method for detecting magnetic metal |
| 05/22/2001 | US6236198 Method and device for non-contact measurement of electrically conductive material |
| 05/16/2001 | EP0886793A4 Pulse sequences and interpretation techniques for nmr measurements |
| 05/15/2001 | US6233479 Microwave hematoma detector |
| 05/15/2001 | US6232879 Sensor and method for remote detection of objects |
| 05/15/2001 | US6232877 Security system |
| 05/15/2001 | US6232780 Underground locating using a locating signal transmitter configured with a single antenna |
| 05/15/2001 | US6232778 Method for obtaining NMR bound fluid volume using partial polarization |
| 05/15/2001 | US6232768 Centering a signal within the dynamic range of a peak detecting proximity detector |
| 05/15/2001 | US6230972 Magnetic reading devices |
| 05/10/2001 | WO2001033231A2 Method and apparatus for electromagnetic position and orientation tracking with distortion compensation |
| 05/10/2001 | DE19948684A1 Computer-supported measuring process, comprises measuring the capacity inside and outside of a cylindrical capacitor, calculating an effective dielectric constant for the actual base layer structure and deriving the dielectric properties |
| 05/09/2001 | CN1294727A Identification tag with enhanced security |
| 05/08/2001 | US6229445 RF identification process and apparatus |
| 05/08/2001 | US6229313 Mapping of pipeline grounding points by airborne or ground magnetic measurements of current flow in the pipeline |
| 05/08/2001 | US6229308 Formation evaluation using magnetic resonance logging measurements |
| 05/08/2001 | US6229306 Method and apparatus for measuring magnetic properties of sheet material with both low and high magnetic particle density |
| 05/08/2001 | US6229294 Magnetic nail/stud sensor |
| 05/03/2001 | WO2001031366A1 Multi-resolution graph-based clustering |
| 05/03/2001 | WO2001031365A1 System and method for enhanced vertical resolution magnetic resonance imaging logs |
| 05/03/2001 | CA2388718A1 System and method for enhanced vertical resolution magnetic resonance imaging logs |
| 05/01/2001 | US6226595 Method and apparatus using multi-target tracking to analyze borehole images and produce sets of tracks and dip data |
| 05/01/2001 | US6225905 Sensor for remote detection of objects |
| 05/01/2001 | US6225806 Electroseismic technique for measuring the properties of rocks surrounding a borehole |
| 05/01/2001 | US6225803 NMR log processing using wavelet filter and iterative inversion |
| 05/01/2001 | CA2009158C Method and apparatus for determining direction to and position of an underground conductor |
| 04/26/2001 | WO2001029583A1 Detection element for objects and detection device using the same |
| 04/24/2001 | US6223066 Optical position sensors |
| 04/24/2001 | US6222481 Method of detecting and classifying objects by means of radar |
| 04/24/2001 | CA2257748C Method and apparatus for evaluating the resistivity of invaded formations at high apparent dip angle |
| 04/18/2001 | EP1093202A1 Method for detecting grounded conductors for switching off a power drill |
| 04/18/2001 | EP1092989A1 Inductive sensor head for metal detectors |
| 04/18/2001 | EP1092988A1 Inductive sensor arrangement and method for detecting ferrous objects |
| 04/18/2001 | EP1092163A1 Apparatus for detecting metals |
| 04/18/2001 | EP0835463A4 Nmr system and method for formation evaluation using diffusion and relaxation log measurements |
| 04/18/2001 | CN1292128A Induction sensor |
| 04/17/2001 | US6219619 Inhomogeneous background-based software focusing method for array-type induction logging tools |
| 04/17/2001 | US6218842 Multi-frequency electromagnetic wave resistivity tool with improved calibration measurement |
| 04/17/2001 | US6218841 Method and apparatus for determining dip angle, and horizontal and vertical conductivities using multi frequency measurments and a model |
| 04/17/2001 | US6218833 Temperature compensated nuclear magnetic resonance apparatus and method |
| 04/17/2001 | US6218830 Method and apparatus for enhanced detecting the presence of magnetic substances in non-magnetic products |
| 04/15/2001 | CA2323234A1 Method and system for determining wellbore and formation characteristics utilizing an electric circuit method |
| 04/12/2001 | WO2001026228A1 Proximity sensor and a method for operating same |
| 04/12/2001 | WO2001026066A1 Passenger detection system and method |
| 04/12/2001 | WO2001025822A1 Method and apparatus for guiding ablative therapy of abnormal biological electrical excitation |
| 04/12/2001 | DE19963339A1 Generating response signal when finding body involves radiating signal with alternating electromagnetic field, digitizing and digitally evaluating received signal in evaluation circuit |
| 04/12/2001 | CA2353901A1 Method and apparatus for guiding ablative therapy of abnormal biological electrical excitation |
| 04/11/2001 | EP0826137B1 Process for determining the direction of the earth's magnetic field |
| 04/10/2001 | US6216090 Interferometric processing method to identify bed boundaries |
| 04/10/2001 | US6216089 Method and apparatus for producing a conductivity log unaffected by shoulder effect and dip from data developed by a well tool |
| 04/10/2001 | US6215888 Cable location method and apparatus using modeling data |
| 04/10/2001 | US6215304 NMR sensor |
| 04/10/2001 | US6215293 Portable stud detector for detecting wood, metal, and live wires |
| 04/10/2001 | US6215122 Method for high speed pulse pile-up rejection |
| 04/10/2001 | US6212956 High output capacitative gas/liquid detector |
| 04/10/2001 | CA2159259C Multifrequency electromagnetic surveying method and system |
| 04/05/2001 | DE19947380A1 Proximity sensor operation method of |
| 04/04/2001 | EP1088292A1 Omnidirectional deactivator for magnetic labels or tags of eas systems |
| 04/04/2001 | EP1088291A2 A sensor, a method and a system for remote detection of objects |
| 04/03/2001 | US6211807 System using spread spectrum modulation for locating underground objects |
| 04/03/2001 | US6211784 Object detector and object detector system |
| 04/03/2001 | US6211679 Method of compensating laterlog measurements for perturbation of survey voltage by cable armor voltage |
| 04/03/2001 | US6211678 Method for radial profiling of resistivity at multiple depths of investigation |
| 04/03/2001 | US6211672 Human appendage mounted metal detector |
| 04/03/2001 | US6211666 Object location system and method using field actuation sequences having different field strengths |
| 04/03/2001 | US6211662 Hand-held hidden object sensor for sensing a location of objects hidden behind a surface of an architectural structure |
| 04/03/2001 | CA2091728C Electrically-and-magnetically-coupled, batteryless, portable, frequency divider |
| 03/29/2001 | WO2001022378A1 Glass sensor |
| 03/28/2001 | EP1086444A1 Identification tag with enhanced security |
| 03/27/2001 | US6208884 Noninvasive room temperature instrument to measure magnetic susceptibility variations in body tissue |
| 03/27/2001 | US6208586 Method and apparatus for communicating data in a wellbore and for detecting the influx of gas |
| 03/27/2001 | US6208286 Method for discovering the location of a living object and microwave location device for realizing the same |
| 03/27/2001 | US6208265 Electromagnetic signal pickup apparatus and method for use of same |
| 03/22/2001 | WO2001020570A1 Magnetic field sensor |
| 03/22/2001 | WO2001020368A1 Device warning against the presence of dangerous objects |
| 03/22/2001 | WO2001020367A1 An electromagnetic induction method and apparatus for the measurement of the electrical resistivity of geologic formations surrounding boreholes cased with a conductive liner |
| 03/22/2001 | WO2001020366A1 Remote reservoir resistivity mapping |
| 03/22/2001 | WO2001020365A2 Lwd resistivity device with inner transmitters and outer receivers, and azimuthal sensitivity |
| 03/22/2001 | DE19941157A1 Ultralight aircraft in composite construction can mount magnetic sensors directly avoiding position measurement errors |
| 03/22/2001 | CA2381169A1 Lwd resistivity device with inner transmitters and outer receivers, and azimuthal sensitivity |
| 03/21/2001 | CN1288553A RF identification process and apparatus |
| 03/20/2001 | US6204766 Multi-layer magnetic tag |
| 03/20/2001 | US6204667 Electromagnetic gradiometer having a primary detector and a plurality of secondary detectors |
| 03/20/2001 | US6204663 Pulse sequence and method for suppression of magneto-acoustic artifacts in NMR data |
| 03/20/2001 | US6203846 Gel-based marking system |