| Patents for G01V 5 - Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity (5,830) |
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| 04/02/1991 | CA1282498C Determination of point of entry of fluid into a cased borehole |
| 03/26/1991 | CA1282190C Method for more accurately determining thermal neutron decay time constants |
| 03/13/1991 | EP0416970A2 Nuclear spectroscopy signal stabilization and calibration method and apparatus |
| 03/12/1991 | CA1281437C Method for determining formation characteristics with enhanced vertical resolution |
| 02/20/1991 | EP0413527A2 Detection of explosives |
| 02/15/1991 | CA2023174A1 Detection of explosives |
| 02/14/1991 | DE4023416A1 Security arrangement passing fan-shaped beam through object - has tunnel with beam source through which object e.g. vehicle being searched is passed |
| 02/14/1991 | DE4023415A1 Airport security inspection arrangement passing beam through objects - has container with tunnel for vehicles to pass through fan-shaped beam system and is easily transportable |
| 02/14/1991 | DE4023414A1 Security arrangement passing fan-shaped beam through objects - has two sources passing beams through object from different directions to associated L=shaped receivers |
| 02/14/1991 | DE4023413A1 Security arrangement passing fan-shaped beam through objects - has transport path through which object is moved on palette by driven rollers |
| 02/13/1991 | EP0412190A1 Device for transmitting fan-shaped radiation through objects |
| 02/13/1991 | EP0412189A1 Device for transmitting fan-shaped radiation through objects |
| 02/12/1991 | CA1280225C Method and apparatus for monitoring a flowstream |
| 02/05/1991 | US4990774 Technique for obtaining high vertical resolution formation capture cross sections from pulsed neutron logs |
| 01/29/1991 | CA1279711C Fluid drop detection and discrimination system |
| 01/22/1991 | US4987584 Materials inspection system using x-ray imaging |
| 01/08/1991 | US4983841 Non-invasive inspection |
| 01/02/1991 | EP0405746A2 Pulsed neutron well logging |
| 12/27/1990 | WO1990016072A1 Multi-sensor explosive detection system |
| 12/25/1990 | US4980902 A radiation system |
| 12/25/1990 | US4980901 Apparatus for and methods of detecting common explosive materials |
| 12/18/1990 | US4978851 Method and apparatus for measuring subsurface characteristics using pulsed neutron/gamma ray logging |
| 11/27/1990 | US4973839 Method and apparatus for epithermal neutron decay logging |
| 11/20/1990 | US4972082 Methods and apparatus for epithermal neutron logging |
| 11/15/1990 | WO1990013900A1 Photoneutron method of detection of explosives in luggage |
| 11/15/1990 | WO1990013811A1 Nuclear resonances in activation analysis, and particularly, its application to detection of nitrogen based explosives in luggage |
| 11/14/1990 | EP0396618A1 Neutron scatter method and apparatus for the noninvasive interrogation of objects. |
| 11/07/1990 | EP0396464A2 Nuclear spectroscopy method and apparatus for digital pulse height analysis |
| 10/10/1990 | EP0390950A1 Arrangement for the inspection of materials |
| 09/26/1990 | EP0389371A2 Method and apparatus for epithermal neutron decay logging |
| 09/26/1990 | EP0389345A2 Methods and apparatus for epithermal neutron logging |
| 09/20/1990 | WO1990010859A1 Apparatus and method for analysis using x-rays |
| 09/19/1990 | EP0387449A2 Pulsed neutron porosity logging |
| 09/18/1990 | US4958080 Lutetium orthosilicate single crystal scintillator detector |
| 09/18/1990 | US4958073 Apparatus for fine spatial resolution measurments of earth formations |
| 09/18/1990 | CA1274321A1 Method of determining the density of substrata |
| 09/11/1990 | US4956856 Arrangement for examining a body comprising a radiation source |
| 09/05/1990 | CN1045186A Digital spectrum-stabilizing device using natural low-energy peak as reference source |
| 08/28/1990 | US4952801 Logging tool for measuring the macroscopic thermal neutron capture cross section of borehole fluids |
| 08/07/1990 | US4947414 Bone densitometer |
| 08/07/1990 | US4947040 Thermal decay time logging method and tool |
| 08/01/1990 | EP0379813A2 Apparatus for fine spatial resolution measurements of earth formations |
| 07/31/1990 | US4945233 Calibration and quality control system for neutron logging instruments |
| 07/03/1990 | US4939362 Borehole fluid density well logging means and method |
| 06/26/1990 | US4937446 Carbon/oxygen well logging method and apparatus |
| 06/20/1990 | EP0373976A1 Lutetium orthosilicate single crystal scintillator detector |
| 06/12/1990 | US4933961 Industrial X-ray inspection system |
| 06/05/1990 | US4931638 Method of monitoring hidden coal-rock interface and transducer realizing this method |
| 05/23/1990 | CN1008135B Arrangement for perspective container |
| 05/15/1990 | US4926044 Thermal decay time logging method and apparatus |
| 05/01/1990 | CA1268560A1 Method of exploration for uranium and petroleum |
| 04/17/1990 | US4918315 Neutron scatter method and apparatus for the noninvasive interrogation of objects |
| 04/17/1990 | US4918314 Gain stabilization circuit for photomultiplier tubes |
| 04/05/1990 | DE3933012A1 Eindringfreies verfahren zum pruefen von hohlkoerpern auf fremdmaterialeinschluesse A non-invasive method for testing hohlkoerpern on fremdmaterialeinschluesse |
| 03/21/1990 | EP0359642A1 Method and apparatus for measuring subsidence |
| 03/21/1990 | EP0358965A1 Method and apparatus for the detection and imaging of heavy metals |
| 03/20/1990 | US4910397 Pulsed neutron porosity logging |
| 03/20/1990 | US4909075 Method for determining formation characteristics with enhanced statistical precision without degrading the vertical resolution or with enhanced vertical resolution |
| 03/14/1990 | EP0358237A1 Apparatus for and methods of detecting common explosive materials |
| 02/27/1990 | US4904865 Externally mounted radioactivity detector for MWD |
| 02/07/1990 | EP0354045A2 X-ray diffraction inspection system and method |
| 02/05/1990 | EP0274522A4 Bone densitometer. |
| 01/30/1990 | CA1265259A1 Method of monitoring a hidden coal-rock interface and a transmitter for performing this method |
| 01/16/1990 | US4894534 For measuring downhole parameters in a borehole |
| 12/27/1989 | EP0348260A1 Carbon/oxygen well logging method and apparatus |
| 12/27/1989 | EP0348084A1 Data conversion circuit for well logging system |
| 12/14/1989 | WO1989011108A3 Method of analyzing exponential data |
| 12/14/1989 | DE3819739A1 Arrangement for the examination of a body with a radiation source |
| 11/28/1989 | US4884289 X-ray scanner for detecting plastic articles |
| 11/28/1989 | US4883956 Methods and apparatus for gamma-ray spectroscopy and like measurements |
| 11/21/1989 | US4882121 Radiation with neutron pulses, detection of gamma photons, determination of nitrogen/oxygen ratio |
| 11/16/1989 | WO1989011108A2 Method of analyzing exponential data |
| 11/07/1989 | US4879735 Baggage inspection conveyor baffle and method |
| 11/07/1989 | US4879463 Method and apparatus for subsurface formation evaluation |
| 10/24/1989 | US4876450 Cryosonde for well logging tool |
| 10/24/1989 | CA1262495A1 Method and tool for neutron lifetime logging |
| 10/11/1989 | EP0336634A1 Detection system for explosives |
| 09/26/1989 | US4870670 X-ray scanner with secondary radiation detector |
| 09/26/1989 | CA1261485A1 Method of logging a well using a non-radioactive material irradiated into an isotope exhibiting a detectable characteristic |
| 09/26/1989 | CA1261075A1 Method and apparatus for anomalous radioactive deposition compensation in spectral gamma ray well logging |
| 09/19/1989 | CA1259708A1 Coal analysis |
| 09/12/1989 | CA1259428A1 Nuclear well logging data acquisition system and method |
| 09/12/1989 | CA1259427A1 Neutron logging time spectral data acquisition system and method |
| 09/05/1989 | US4864142 Method and apparatus for the noninvasive interrogation of objects |
| 09/05/1989 | US4864129 Logging apparatus and method |
| 08/29/1989 | US4862004 Radiation dose measuring method and apparatus with nuclide discrimination function |
| 08/15/1989 | US4857728 Method and apparatus for reducing radioactive hazards in well boreholes |
| 08/08/1989 | CA1258321A1 Method and device for measuring gamma radiation |
| 08/02/1989 | CN2042206U Carrier source of radioactivity logging instrument |
| 08/02/1989 | CN1034405A Method and apparatus for subsurface formation evaluation |
| 08/01/1989 | US4853537 Measurement of the effective photo-electric absorption cross section of rock samples |
| 07/25/1989 | US4851687 Detection of nitrogen in explosives |
| 07/18/1989 | US4849627 Photoelectric lithology factor and method of measurement |
| 07/13/1989 | WO1989006357A1 Neutron scatter method and apparatus for the noninvasive interrogation of objects |
| 07/12/1989 | EP0323773A2 Apparatus for subsurface formation evaluation |
| 07/11/1989 | CA1257406A1 Defect detector for cord reinforced tire fabric |
| 07/11/1989 | CA1257405A1 Method and apparatus for determining true formation porosity from measurement-while-drilling neutron porosity measurement devices |
| 07/11/1989 | CA1257404A1 System for simultaneous gamma-gamma formation density logging while drilling |
| 07/04/1989 | US4845359 Methods and apparatus for safely handling radioactive sources in measuring-while-drilling tools |
| 06/27/1989 | CA1256596A1 Measurement of formation porosity using fast neutron spectroscopy |