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| Number | Title | Issue Date |
| 7435597 | Assays for zero-valent transition metals in sedimentary rocks using carbon monoxide with application to oil and gas exploration The present invention is directed to novel assays for zero-valent transition metals. The novel assays of the present invention are generally methods or processes for quantitatively and/or qualitatively evaluating the presence of zero-valent transition metals on and/... | 10/14/2008 |
| 7352465 | Sample conditioning and environmental control techniques for gas sensor The present invention is a system and method of conditioning the sample and surrounding environment of an exhaled breath sensor. It includes (i) using a particular molecular sieve for a triple purpose: (a) maintaining the sensor at a constant relative humidity durin... | 04/01/2008 |
| 7264777 | Measurement of surface areas by polyvinylpyrrolidone sorption A method of quantitatively determining surface area of a sample uses polyvinylpyrrolidone (PVP) dispersed in a solution containing the sample, and determining the amount of PVP that has deposited on the sample. ... | 09/04/2007 |
| 7231819 | Chemical sensor for wellbore applications There is described an analyzing device having two separation units to separate molecular species to detect molecular species in wellbore fluids with both separation units operating under forced flow conditions to provide for an active separation of subterranean well... | 06/19/2007 |
| 7153688 | Rock assay for predicting oil or gas in target reservoirs The present invention relates to assays for ascribing catalytic activity to rock samples by virtue of zero-valent transition metals potentially being present within the sample. Embodiments of the present invention are generally directed to novel assays for measuring... | 12/26/2006 |
| 7105133 | Fluid sampling apparatus and fluid analyzer having the same A fluid sampling apparatus and associated fluid analyzer sample process fluids used in semiconductor manufacturing at a plurality of measurement points. The fluid sampling apparatus includes a first nozzle assembly having a plurality of outlet nozzles. The plurality... | 09/12/2006 |
| 7032444 | Module for extracting gas from an underground liquid and installation equipped therewith This invention concerns a module for extracting samples in gas phase of compounds present in an underground working liquid, the extractor module including a receptacle for the liquid, associated with a device for stirring the liquid, a liquid inlet duct, a liquid ev... | 04/25/2006 |
| 6939717 | Hydrogen sulphide detection method and apparatus Described is a downhole method and apparatus for detecting hydrogen sulphide in formation fluids produced in a hydrocarbon well. The sensor system is located within or in communication with an extraction chamber used to extract hydrogen sulphide in a gaseous state f... | 09/06/2005 |
| 6927066 | Process for the determination of MTBE in the ground and air A process is described, and also the system for its embodiment, for the determination of pollution by MTBE in the soil and in the overlying atmosphere. An example is described relating to the monitoring of underground fuel tanks for autotraction containing an oxygen... | 08/09/2005 |
| 6902937 | Method for the determination of low-concentration anions in the presence of an excess of another anion This invention relates to methods and apparatus for detecting, quantifying, and/or identifying trace quantities of an anion in the presence of an excess of another anion. One apparatus comprises a sample loop having a first end adapted to be connected to a sample-in... | 06/07/2005 |
| 6773921 | Predicting proximity to coke formation Indicia of stability or thresholds of instability may be used to assess the proximity of hydrocarbon materials such as petroleum residua to deposition of carbon rich materials. The invention may be used to evaluate suitability of such hydrocarbon materials to variou... | 08/10/2004 |
| 6706527 | Automated fluid analysis apparatus and techniques An automated device that couples a pair of differently sized sample loops with a syringe pump and a source of degassed water. A fluid sample is mounted at an inlet port and delivered to the sample loops. A selected sample from the sample loops is diluted in the syri... | 03/16/2004 |
| 6649355 | Lipoxygenase proteins and nucleic acids Isolated and purified lipoxygenase proteins and nucleic acids are described. Particularly, a novel human 15(S) lipoxygenase (15-Lox-2) protein and cDNA and a cDNA for mouse 8S-lipoxygenase are described. Recombinant host cells, recombinant nucleic acids a... | 11/18/2003 |
| 6630357 | Quantification of bitumen using NMR A method of determining the composition of a sample including heavy oil or bitumen and water using low-field NMR. The NMR spectrum of the sample is taken at relatively low and high temperatures and the oil or water content is determined from the spectra a... | 10/07/2003 |
| 6599747 | Soil test A test for determining the bioavailable fraction of an organic pollutant present in soil comprises determining the fraction of the organic pollutant present in the soil which may be extracted by a cyclodextrin or derivative thereof.... | 07/29/2003 |
| 6534318 | Mass spectrometric multivariate analysis This invention relates to the selection of a crude oil or crude oil blend for the production of high-performing paving asphalt based on molecular composition of the asphalt and of the parent crude oil or crude oil blend based, at least in part, on high re... | 03/18/2003 |
| 6319717 | Thermal acid base accounting in mine overburden The present invention is a one-step thermal method for analyzing the acid-base content of earth samples, specifically mine overburden samples. By using a low oxygen concentration, preferably about 3%, the transition metal carbonates in the sample decompos... | 11/20/2001 |
| 6319725 | Method for estimating composition of product obtained by liquefaction of coal The present invention provides a method of estimating ingredients of liquefaction products of coal or its analogues from a resonance spectrum thereof obtained using their solid state 13 C nuclear magnetic resonance spectrometer. The method comp... | 11/20/2001 |
| 6200816 | Method for measuring particulate and gaseous metals in a fluid stream, device for measuring particulate and gaseous metals in a fluid stream A method for analyzing metal in a fluid is provided comprising maintaining a first portion of a continuous filter media substrate at a temperature coinciding with the phase in which the metal is to be analyzed; contacting the fluid to a first portion of s... | 03/13/2001 |
| 6117682 | Method for detecting hydrocarbons in water The presence of hydrocarbons in water is detected by contacting a water sample with an adsorbent material to extract hydrocarbons from the water sample and then contacting the adsorbent material with a solvent for the hydrocarbons. A developer such as a m... | 09/12/2000 |
| 5968758 | Method for detecting free IGFBP-1 Antibodies having binding affinity for free IGFBP-1, biological compositions including antibodies having binding affinity for free IGFBP-1, kits for detecting free IGFBP-1 using the antibodies, and cell lines for producing the antibodies are provided. Als... | 10/19/1999 |
| 5958777 | Device for determining CO2 and CO in a geologic sediment A device for determining at least one petroleum characteristic of a geologic sediment sample placed in a boat, said device including a first heater heating said sample in a non-oxidizing atmosphere, a measuring component determining hydrocarbon-containing... | 09/28/1999 |
| 5928950 | Method for detecting hydrocarbons in soil The presence of hydrocarbons in soil is detected by immersing a soil sample in a water-miscible solvent capable of dissolving the hydrocarbons to extract hydrocarbons from the soil into the solvent. An aqueous developer is mixed into the solvent to produc... | 07/27/1999 |
| 5922611 | Determining a parameter in a physical system A method of determining a parameter of a physical model representing the electrical behavior of a composition is provided. The method comprises defining said model by a relationship between the electrical properties of the composition, a plurality of phys... | 07/13/1999 |
| 5905043 | Tagging and identifying organic liquids including fuels A water-immiscible organic fluid is tagged and identified by tagging the organic fluid with between about 0.25 and about 100 ppm of a marker compound having the formula: ##STR1## where the OH groups are either ortho or para to the diazo moieties, and... | 05/18/1999 |
| 5858791 | Method and device for the continuous measurement of variations in the overall saturation of a sample with incompressible immiscible fluids Saturation variations are obtained by displacing a first fluid (for example water) that initially saturates a sample (1) coated with resin (2) by injecting therein, through a first end plate or cap (3) and by means of a pump (7), a second fluid (for examp... | 01/12/1999 |
| 5843787 | Method allowing the fast assessment of at least one petroleum characteristic of a rock sample-application to a reservoir comprising heavy oils A method allowing fast assessment of at least one petroleum characteristic of geologic sediments from a sample of these sediments, said method comprising heating the sample in a non-oxidizing atmosphere, and which method comprises different temperature ri... | 12/01/1998 |
| 5811308 | Method for determining petroleum characteristics of geologic sediments The present invention relates to a method for determining at least one petroleum characteristic of a geologic sediment sample heated in a non-oxidizing atmosphere and an oxidizing atmosphere. The sample is heated to a first temperature value below 200° C... | 09/22/1998 |
| 5786225 | Method for evaluating a pollution characteristic of a soil sample A method of evaluating at least on type of pollution characteristic in a soil sample contaminated by hydrocarbon compounds, a method wherein the soil sample is first heated in a non-oxidizing atmosphere, then in an oxidizing atmosphere. The method compris... | 07/28/1998 |
| 5766953 | Determination of the source of a soil sample Methods to determine the geographic sources of soil samples are described. A biological fingerprint profile of the sample is determined. The profile is compared to a library which is constructed of datasets which relate biological profiles and geographic ... | 06/16/1998 |
| 5756357 | Method for detecting hydrocarbons in soil The presence of hydrocarbons in soil is detected by immersing a soil sample in a water-miscible solvent capable of dissolving the hydrocarbons to extract hydrocarbons from the soil into the solvent. An aqueous developer is mixed into the solvent to produc... | 05/26/1998 |
| 5741707 | Method for quantitative analysis of earth samples A method and apparatus for analyzing a sample to determine its mineral composition. The invention combines X-ray diffraction with Fourier transform infrared spectroscopy to provide a complete spectrum including molecular vibrations, probed by FTIR scans a... | 04/21/1998 |
| 5679574 | Quantitative test for oils, crude oil, hydrocarbon, or other contaminants in soil and a kit for performing the same A method for the quantitative determination of oil in a soil matrix is provided, in which the method involves: extracting a soil sample with a solvent in the presence of a drying agent to provide an extract containing oil, if present in the soil sample, w... | 10/21/1997 |
| 5625138 | Earthquake early warning system An early warning system for providing notice that seismic activity, such as an earthquake, is imminent. The earthquake early warning system includes a subterranean detector unit assembly having a plurality of detector units carried by a subterranean inver... | 04/29/1997 |
| 5595914 | Gypsum determination in soils by conversion to water-soluble sodium sulfate Precise and accurate determination of gypsum in soils has been difficult, laborious and time consuming by currently available methods. The present invention solves such problems by: 1) Direct removal of nongypsic sulfate from 2-g soil sample with 25-mL po... | 01/21/1997 |
| 5479814 | Method and apparatus for detecting mercury vapor content of unconsolidated porous materials A method and apparatus for determining mercury vapor content of a body of earth for the purpose of ascertaining the mercury vapor content and correlating to the expected degree of mineralized character of the body of earth which includes the use of a stri... | 01/02/1996 |
| 5470749 | Method for determining steam quality using a foaming surfactant Steam quality is measured by mixing the steam with a small amount of surfactant to convert the steam to a stable foam, passing the stable foam through a capillary tube to determine foam quality (volume of vapor per volume of vapor and liquid) by measuring... | 11/28/1995 |
| 5416024 | Obtaining collective fluid inclusion volatiles for inclusion composition mapping of earth's subsurface A collective fluid inclusions volatiles sample is released from each of a plurality of sedimentary rock samples and analyzed as it is being released to determine composition thereof. Compositions are used for mapping the earth's subsurface.... | 05/16/1995 |
| 5397708 | Method for detection of sulfides A method for determining the concentration of sulfide in a process stream. The method comprises the steps of adding to a process stream a sulfide scavenger (probe) that changes electronic properties when it reacts with sulfide. One can then monitor the el... | 03/14/1995 |
| 5395768 | Method to evaluate the Rwb parameter of the dual water log interpretation model A method is described to evaluate the Rwb parameter, which can be applied to the Dual Water log interpretation model by measuring the resistivity of initial brines and of filtrates from muds prepared with shales. The method allows a more precis... | 03/07/1995 |
