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| Number | Title | Issue Date |
| 8034290 | Reigniting flame in volatile organic compound device Reigniting a flame in a volatile organic compound (VOC) detector in the event that the flame has gone out. In one implementation, a signal is received at a handheld personal computer indicating that a flame in the VOC detector has gone out. The flame in the VOC dete... | 10/11/2011 |
| 7906071 | Flame photometric detector having improved sensitivity A flame photometric detector comprises a burner assembly configured to combust a sample of an effluent, the combusted sample emitting at least one excited molecule, an interchangeable selective optical filter configured to pass a plurality of selected optical wavele... | 03/15/2011 |
| 7837935 | Joint for joining hydrogen gas running route-forming members and portable hydrogen flame ionization gas detector Disclosed is a small-sized joint for joining hydrogen gas running route-forming members, which can surely prevent the leakage of hydrogen gas, and a portable hydrogen flame ionization gas detector that can prevent the leakage of hydrogen gas to achieve high safety. | 11/23/2010 |
| 7749436 | Gas injection amount determining method in isotope gas analysis, and isotope gas analyzing and measuring method and apparatus As previous processing of measurement in which gas to be measured containing, as gas components, carbon dioxide 13CO2 and carbon dioxide 12CO2, is introduced into a cell, and in which the intensities of transmitted lights ... | 07/06/2010 |
| 7377150 | Analyzer An analyzer includes a reforming unit which reforms fuel containing an organic compound which contains carbon and hydrogen into a reformed gas containing hydrogen, a flame ionization detector which is connected to the reforming unit, and detects an ion generated by ... | 05/27/2008 |
| 7369945 | Apparatus and method for storing and transporting data related to vapor emissions and measurements thereof The present invention provides apparatus and a methods for collecting, transmitting and storing fugitive gas emission data. An embodiment of the invention collects fugitive gas with a sampling probe and into a emission monitoring device. The device then sends and st... | 05/06/2008 |
| 7354552 | Gas chromatograph with flame ionisation detector for parallel hydrocarbon analysis A field flame ionisation gas chromatograph for the analysis of a hydrocarbon gas mixture found in particular in mud from oil drilling and sampled by a gas carrier, which is characterised by the fact that it includes a first and a second analysis unit working in para... | 04/08/2008 |
| 7332326 | Centripetally-motivated microfluidics system for performing in vitro hybridization and amplification of nucleic acids This invention relates to methods and apparatus for performing microanalytic and microsynthetic analyses and procedures. The invention provides a microsystem platform and a micromanipulation device for manipulating the platform that utilizes the centripetal force re... | 02/19/2008 |
| 7264775 | Igniter assembly An igniter assembly for a pulsed flame photometric detector having a filament comprising a resistive heating wire between about 0.08 millimeter and about 0.40 millimeter in diameter wound into a coil having an inner diameter between about 0.40 millimeter and about 3... | 09/04/2007 |
| 7223607 | Process and device for the detection of hydrocarbons in a gas The invention relates to a process for the detection of hydrocarbons other than methane in a gas predominantly or essentially comprising oxygen, as well as methane and the said hydrocarbons other than methane, the said process comprising: ... | 05/29/2007 |
| 7182862 | Fractionating apparatus The probe has a triple tube structure, in which an eluate from a liquid chromatograph flows through an innermost flow passage, a matrix solution flows through a flow passage outside the innermost flow passage, and the air or acetone flows through an outermost flow p... | 02/27/2007 |
| 7172730 | Thermal sensor A thermal sensor has a substrate defining a reaction chamber. The reaction chamber has an inlet for conducting sample into the reaction chamber, a reaction surface and an orifice adjacent the reaction surface defining an outlet from the reaction chamber. The reactio... | 02/06/2007 |
| 7169300 | Fractionating apparatus A tip portion of a probe has a triple tube structure in which a fused silica capillary on the innermost side, a capillary made of FEP outside the fused silica capillary, and a stainless pipe on the outermost side are disposed coaxially. An eluate from a liquid chrom... | 01/30/2007 |
| 7169299 | Fractionating apparatus for liquid chromatography A distal end portion of a probe has a multi-pipe structure, in which an effluent solution from a high speed liquid chromatography passes through an innermost flow passage, a matrix solution through an outer flow passage, and the air through an outermost flow passage... | 01/30/2007 |
| 7150780 | Electrostatic air cleaning device An electrostatic air cleaning device includes an array of electrodes. The electrodes include corona electrodes connected to a suitable source of high voltage so as to generate a corona discharge. Laterally displaced collecting electrodes include one or more bulges t... | 12/19/2006 |
| 7141211 | System for determining total sulfur content In order to determine the total sulfur content of a sample (1), the sample is uniformly combusted with a flame (8). The combustion product sulfur dioxide is fed to a gas chromatograph (15) in which it is separated from other combustion products ... | 11/28/2006 |
| 7112447 | Hand held gas analyzer A lightweight and portable analyzer is provided. At least one component of the analyzer is made from a lightweight material, such as ABS. A manifold can have a plate and gas passages ultrasonically welded together. By having at least one component made from a lightw... | 09/26/2006 |
| 7100421 | Micro-discharge gas detector A gas detector especially adapted for use with gas chromatographs contains two capillary tubing electrodes through which a gas flows. The inner ends of the electrodes are coaxial and are separated by a gap. The outer end of one of the electrodes forms a gas inlet. T... | 09/05/2006 |
| 6977179 | Method and apparatus for measuring the heating value of a single or multi-component fuel gas A method for determining the heating value of a fuel gas or fuel gas mixture in which the chemiluminescense intensity of at least one chemical bond in a known volume of the fuel gas or mixture is measured. Based upon the results of the measurement(s), the amount of ... | 12/20/2005 |
| 6958245 | Array cytometry A method and apparatus for the manipulation of colloidal particulates and biomolecules at the interface between an insulating electrode such as silicon oxide and an electrolyte solution. Light-controlled elektrokinetic assembly of particles near surfaces relies on t... | 10/25/2005 |
| 6932941 | Method and apparatus for improved gas detection The invention relates to a method and apparatus for providing a reactor having a heater, a passage for transporting a reactant, and a chamber containing a gas sample and being coupled to the passage for receiving the reactant and mixing the reactant with the gas sam... | 08/23/2005 |
| 6780378 | Method for measuring concentrations of gases and vapors using controlled flames A method and apparatus for measuring the concentration of at least one gaseous component and/or vaporous component of a gaseous mixture in which a controlled sensor flame is introduced into the gaseous mixture and at least one narrow spectral band in the controlled ... | 08/24/2004 |
| 6709632 | ICP analyzer An ICP analyzer has a nebulizer for nebulizing a sample fluid for the purpose of analyzing microscopic impurities within the sample fluid, a plasma torch for introducing nebulized spray into a plasma, and a spray chamber disposed between the nebulizer and the plasma... | 03/23/2004 |
| 6548263 | Miniaturized cell array methods and apparatus for cell-based screening The present invention describes novel methods for making a substrate for selective cell patterning, and the substrates themselves, wherein the method comprises contacting reactive hydroxyl groups on the surface of a substrate with a hydroxyl-reactive bifu... | 04/15/2003 |
| 6514771 | Light-controlled electrokinetic assembly of particles near surfaces A method and apparatus for the manipulation of colloidal particulates and biomolecules at the interface between an insulating electrode such as silicon oxide and an electrolyte solution. Light-controlled electrokinetic assembly of particles near surfaces ... | 02/04/2003 |
| 6511850 | Pneumatic nebulizing interface to convert an analyte-containing fluid stream into an aerosol, method for using same and instruments including same A self-adjusting, free-flowing pneumatic nebulizer interface is described for coupling fluid phase separation apparatus such as capillary electrophoresis apparatus or fluid-phase analyte delivery apparatus such as flow-injection analysis apparatus to gas ... | 01/28/2003 |
| 6429020 | Flashback detection sensor for lean premix fuel nozzles A sensor for detecting the flame occurring during a flashback condition in the fuel nozzle of a lean premix combustion system is presented. The sensor comprises an electrically isolated flashback detection electrode and a guard electrode, both of which ge... | 08/06/2002 |
| 6378355 | Combustible gas diode sensor A combustible gas sensor diode including a SiC semiconductor substrate, on top of which an AlN layer and a catalytic metal "gate" electrode are deposited is disclosed. The combustible gas sensor diode can be operated in either a D.C. forward conduction mo... | 04/30/2002 |
| 6251691 | Light-controlled electrokinetic assembly of particles near surfaces A method and apparatus for the manipulation of colloidal particles and biomolecules at the interface between an insulating electrode such as silicon oxide and an electrolyte solution. Light-controlled electrokinetic assembly of particles near surfaces rel... | 06/26/2001 |
| 6238622 | Flame ionization detector A flame ionization detector burner, includes a housing having a generally cylindrical flame cavity therein extending along a generally longitudinal axis of the housing and a housing exterior with intake passageways communicating between the housing exteri... | 05/29/2001 |
| 6096178 | Electrolyzer device for the operation of flame ionization detectors The invention provides a water electrolyzer device for generating a premixed hydrogen and oxygen gas mixture and for directing said gas mixture into a flame ionization detector, the device including a water container for performing water electrolysis; an ... | 08/01/2000 |
| 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 |
| 5922286 | Device for delivering any one of a plurality of gases to an apparatus A device for delivering one of a plurality of gases to an apparatus includes at least two valves. Each valve includes a first conduit permanently connected by one end thereof to an associated sampling line and, by another end thereof, to an associated pur... | 07/13/1999 |
| 5853664 | Flow modulation for facilitating detector ignition Method for the analysis of one or more analytes present in a sample carried in a first fluid. The first fluid is combined with a first detector fluid and a second detector fluid to provide a fluid mixture which flows across the surface of an igniter. The ... | 12/29/1998 |
| 5834630 | Apparatus for measuring flash point of article A flash point measuring apparatus including a sample vessel 11 made of an electrically conductive material, a heating device 17 for heating a sample S contained in the sample vessel 11, an igniting heat source 13 arranged above the sample vessel and made ... | 11/10/1998 |
| 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 |
| 5741711 | Flame-based method and apparatus for analyzing a sample A flame based method for analyzing a sample by introducing the sample into a combustible gas mixture, igniting the combustible gas mixture to produce a flame, and detecting a characteristic of the resulting flame to determine the identity and/or concentra... | 04/21/1998 |
| 5723091 | Flow modulation for facilitating detector ignition Method and apparatus for the analysis of one or more analytes present in a sample carried in a first fluid. The first fluid is combined with a first detector fluid and a second detector fluid to provide a fluid mixture which flows across the surface of an... | 03/03/1998 |
| 5665604 | Method and apparatus for detecting halogenated hydrocarbons A halogenated hydrocarbon (HHC) detector is formed from a silent discharge (also called a dielectric barrier discharge) plasma generator. A silent discharge plasma device receives a gas sample that may contain one or more HHCs and produces free radicals a... | 09/09/1997 |
