Class 250/390.05 - For moisture content

Subclass of Class 250 - Radiant energy
Definition: Subject matter wherein the means is particularly adapted
No. of patents: 37
Last issue date: 09/11/2007

Number	Title	Issue Date
7268353	Measuring the moisture content of plutonium oxide canisters A process for measuring the moisture content in a quantity of PuO2 powder. The process detects the content of thermal neutrons emitted by the quantity of PuO2 powder and then deduces its moisture content from a value of the detected content ass...	09/11/2007
7247857	Method and an apparatus for detecting water on a ship's deck This invention relates to an apparatus for detecting hydrogeneous material on a ship's deck comprising a neutron source located below the surface of the ship's deck and emitting fast/energy-rich neutrons, and a detector device that is located below the surface of th...	07/24/2007
7244947	Neutron detector with layered thermal-neutron scintillator and dual function light guide and thermalizing media A broad spectrum neutron detector has a thermal neutron sensitive scintillator film interleaved with a hydrogenous thermalizing media. The neutron detector has negligible sensitivity to gamma rays and produces a strong and unambiguous signal for virtually all neutro...	07/17/2007
7214948	Neutron optical component for the small angle neutron scattering measuring technique A high measuring resolution along with a large irradiation surface and a high beam intensity are required for structural analysis of material according to the small angle neutron scattering measuring technique. However, with known diaphragm collimators, the necessar...	05/08/2007
7152002	Method and apparatus for analysis of elements in bulk substance A substance analyzer utilizing Prompt Gamma Neutron Activation Analysis for identifying characteristics of a substance and method of manufacturing the same are disclosed. The analyzer is small enough to be portable and to allow its use in many applications where cur...	12/19/2006
7038470	Parallel-plate capacitive element for monitoring environmental parameters in concrete The invention provides a sensor for monitoring an environmental parameter in concrete including an enclosure; a detecting device connected to the enclosure for a detecting at least one environmental parameter in concrete, wherein the detecting device includes at lea...	05/02/2006
6995667	Systems, methods, and computer program products for automatic tracking and/or remote monitoring of nuclear gauges and/or data communication therewith Methods, systems, and computer program products configured to track the geographic location of hazmat substances or devices including same, such as nuclear gauges with a radioactive component, include mounting a tracking device in proximity to the substance, the tra...	02/07/2006
6707047	Method to measure hydrogen-bearing constituent in a material using neutron spectroscopy A non-destructive method for quantifying the hydrogen content or a hydrogen-bearing constituent in a material is based on the principle of moderating neutron spectroscopy. This technique is particularly suited for analyzing materials containing the high scattering/c...	03/16/2004
6603122	Probe for contamination detection in recyclable materials A neutron detection system for detection of contaminants contained within a bulk material during recycling includes at least one neutron generator for neutron bombardment of the bulk material, and at least one gamma ray detector for detection of gamma ray...	08/05/2003
6580079	Method to measure hydrogen-bearing constituent in a material using neutron spectroscopy A non-destructive method for quantifying the hydrogen content or a hydrogen-bearing constituent in a material. Moderating neutron spectroscopy is particularly suited for analyzing materials containing the high scattering/capture cross-section element of h...	06/17/2003
6310936	Thin layer nuclear density guage The present invention provides an improved thin layer nuclear density gauge comprising a gauge housing having a vertical cavity therethrough and a base, a first radiation detector located at a first position within said housing and adjacent to said base o...	10/30/2001
5703371	Modified notched energy filter neutron radiography camera for non-destructive determination of hydrogen content of irradiated BWR fuel elements A neutron radiography camera operates in cooperation with a neutron beam source for determining hydrogen content of irradiated BWR fuel elements. The camera implements the method using a notched neutron spectrum filter to determine the hydrogen content. T...	12/30/1997
5606167	Contraband detection apparatus and method A contraband detection system (18) using a single, cone shaped neutron beam determines substances concealed in a sample object by developing total neutron cross section spectra for a plurality of elements, including carbon, nitrogen, oxygen, hydrogen and ...	02/25/1997
5532492	Nuclear gauge with compensation for sample irregularities A neutron gauge is described for determining the moisture content of a moisture containing material. Samples of the moisture containing material are confined in a sample pan and a sample cover with sufficient neutron moderating activity is pressed against...	07/02/1996
5483063	Zero-spaced epithermal neutron moisture detection system The present invention is directed toward the determination of moisture content per unit volume of material penetrated by a gas filled borehole. An alternate application of the invention is the detection of fractures and vugular cavities in the immediate v...	01/09/1996
5446288	Integrated substance detection instrument A portable device used for non-destructive detection of illicit narcotics, or other hydrogen or light element containing substances, includes a weak, self-contained, radioactive source of fast neutrons and a detector for detecting scattered thermal neutro...	08/29/1995
5412217	Density-moisture measuring apparatus A density-moisture measuring apparatus includes an NaI scintillator 4 which detects only a gamma ray from a californium 1 which has passed through an object 20, a plastic scintillator 15 for detecting the gamma ray and a fast neutron ray, and a photomulti...	05/02/1995
5272910	Vadose zone monitoring system having wick layer enhancement A vadose zone monitoring system for detecting leaks from a contaminant storage facility or the like is disclosed in which leaks are detected in a confined radial area around at least one generally horizontal, neutron access tube disposed under the landfil...	12/28/1993
5258622	Apparatus and method for measuring physical characteristics of materials An instrument and a method are provided for determining the moisture and cement contents of fresh concrete and for calculating and displaying to the user of the instrument the projected strength of the concrete. The instrument has two probes, each probe c...	11/02/1993
5151601	Nuclear gauge with compensation for sample of insufficient neutron moderating activity Method and apparatus for determining the asphalt content of a bituminous paving mix wherein Marshall plug samples of the bituminous paving mix are subjected to a neutron source and the neutrons that are thermalized by hydrogen nuclei present in the Marsha...	09/29/1992
5083029	Measuring water content by neutron thermalization A vessel for receiving a test sample of fluid whose water content is to be determined and a thermal neutron sensor are retained in cavities of a biological radioactivity shield. The cavities are lined with a material which blocks external thermal neutrons...	01/21/1992
4992667	Device for measuring moisture content of soil and snow water storage A device for measuring moisture content of soil and snow water storage has a first detector of cosmic neutrons passed through the soil placed deep in the soil at a pre-set depth, a second cosmic-ray neutron detector placed above the soil at an altitude wh...	02/12/1991
4884288	Neutron and gamma-ray moisture assay A method and apparatus is disclosed for determining the moisture content of a substance irradiated by a fast neutron and gamma ray source wherein a fast neutron moderator is positioned in the path of the fast neutrons and gamm rays transmitted through the...	11/28/1989
4874950	Asphalt content gauge with compensation for sample temperature deviations The present invention relates to an improvement in a nuclear measuring gauge for measuring the composition of a hydrogen containing material by counting neutrons which are thermalized by the presence of the hydrogen in the material. The present invention ...	10/17/1989
4766319	Portable nuclear moisture-density gauge with low activity nuclear sources The nuclear moisture-density gauge of the present invention employs a low activity neutron radiation source and a low activity gamma radiation source. In order to achieve more accurate density measurements at the relatively low count rates which results f...	08/23/1988
4754136	Method of detecting underground tank leak A non-destructive and non-invasive method of detecting underground tank leaks using three phase testing. A plurality of boreholes are drilled around the tank with the boreholes preferably extending below the tank. In the first phase of testing gas vapor a...	06/28/1988
4646068	Ice monitoring system using neutron moderation A layer of hydrogenous material, such as ice which may accumulate on an outer airplane surface, is monitored according to neutron moderation by the layer. A source of fast neutrons and a detector of slow neutrons are mounted on one side of a mounting plat...	02/24/1987
4645635	Method and apparatus for determining the properties of wet steam A partially collimated beam of thermal/epithermal neutrons is transmitted through a small bore pipe in which wet steam flows under a high pressure. A thermal neutron detector measures the transmission of the thermal/epithermal neutrons by the wet steam an...	02/24/1987
4542472	Methods and apparatus for surveying roof moisture content A method, and a nuclear radiation gauge, for surveying a roof for moisture in which a thermal neutron gauge is positioned at a predetermined location on a roof, the signal representative of the hydrogen content of the roof at that location is generated an...	09/17/1985
4499380	Apparatus and method for determining the hydrogen content of a substance Set forth in the accompanying disclosure is an apparatus 10 and method broadly useful for monitoring the concentration of a hydrogenous component within a given sample or space. The specific apparatus disclosed is directed to monitoring steam quality with...	02/12/1985
4439675	Moisture and density gauge A moisture and density gauge which combines sources of gamma and neutron radiation in a casing which is placed in the medium being analyzed. The gauge includes detectors for the gamma and neutron radiation being placed in end to end configuration within t...	03/27/1984
4381452	System for measuring trace moisture in a gaseous stream A sample fluid stream passes through a molecular sieve in which moisture is adsorbed in direct proportion to the moisture in the fluid stream. Fast neutrons beamed through the sieve interact with the hydrogen nuclei in the accumulated water. The resulting...	04/26/1983
4362939	Method and apparatus for measurement of moisture A bulk material of grain, lump or any other form is irradiated with neutron and gamma radiation emitted from preferably a single radiation source, and preferably a single radiation detector detects the neutrons and gamma radiation transmitted through the ...	12/07/1982
4259575	Directional gamma detector An improved directional gamma radiation detector has a collector sandwiched etween two layers of insulation of varying thicknesses. The collector and insulation layers are contained within an evacuated casing, or emitter, which releases electrons upon expo...	03/31/1981
4152600	Nuclear radiation moisture gauge calibration standard A hydrophobic standard for calibrating nuclear radiation moisture gauges. In accordance with this invention, each standard has physical characteristics and dimensions effective for representing to a nuclear gauge undergoing calibration an infinite mass of...	05/01/1979
4039809	Lower-energy neutron sources for increasing the sensitivity of nuclear gages for measuring the water content of bulk materials The sensitivity of a gage using a nuclear source for measuring the water content of bulk materials, such as plastic concrete, is increased by use of a lithium or fluorine neutron nuclear source....	08/02/1977
3955087	Apparatus for measuring moisture in moving bulk material using a lithium-7 radiation source A nucleonic device for measuring the moisture content of bulk materials using a radioisotopic fast-neutron source such as lithium-7 admixed with an alpha-particle emitter, such as americium-241, as a means of minimizing the thickness of the layer of bulk ...	05/04/1976

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Class 250/390.05 - For moisture content