| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 073230420 | Detail of gas handling means | 44 |
| 20090126457 | METHOD FOR IDENTIFYING THE COMPOSITION OF A SAMPLE - The present invention is directed to a method for multidimensional gas chromatography for separating the analytes of a complex sample. The method comprises the steps of introducing the sample onto a first column whereby the sample is separated into at least two segments, introducing at least one segment into a heartcut device whereby the segments are selectively separated into at least two heartcut fractions, introducing at least one of the fractions onto a second column whereby at least one fraction is further separated into at least two analytes, introducing at least one analyte from the second column to a gas chromatography connector, introducing the analyte from the connector to a third column, and introducing the analyte from the third column into a detector whereby the analyte is analyzed and identified. | 05-21-2009 |
| 20090133469 | Vapour Generators - A vapour generator system ( | 05-28-2009 |
| 20090158815 | MULTI-STAGE INJECTOR FOR FLUID ANALYSIS - The present invention generally recites a method, system and apparatus for fluid analysis and more specifically recites a method system and apparatus for multistage injection of a fluid to be analyzed into a fluid analysis instrument. | 06-25-2009 |
| 20090217735 | Gas Chromatography System and Method - The invention relates to a gas chromatography system for the direct coupling of liquid chromatography and gas chromatography or for the introduction of large sample volumes, which is configured to operate selectively in a retention mode. The inventive system includes a tube ( | 09-03-2009 |
| 20090235719 | CO2 ABSORPTION DEVICE FOR ELEMENTAL ANALYSIS INSTRUMENTS - The invention relates to a CO | 09-24-2009 |
| 20090277245 | Methods And Systems For Cooling A Chromatographic Column - Systems and methods for cooling a chromatographic column is disclosed generally, comprising heating a chromatographic column, supplying fluid into the column via the inlet end of the column at an inlet pressure, decreasing the temperature of the column, thereby causing the fluid in the column to contract, and controlling the fluid in the column such that the rate at which the fluid in the column contracts does not exceed the flow rate of the fluid supplied to the column. In certain embodiments, the rate of change of the volume of the fluid in the column as the column temperature decreases is modeled, and the rate of contraction of the gas in the column is estimated therefrom. In some embodiments, the column temperature and/or inlet pressure are controlled by a programmable chromatographic oven. | 11-12-2009 |
| 20100077838 | METHOD FOR DETERMINING A LOW CYLINDER PRESSURE CONDITION FOR A GAS CHROMATOGRAPH - A method for determining a low cylinder pressure condition of a gas chromatograph includes providing gas from the cylinder to an inlet of the gas chromatograph. In particular, the gas is provided at a predetermined inlet pressure that is higher than an inlet pressure that is required for a predetermined gas chromatographic analysis routine. The inlet pressure of the gas being supplied to the inlet is increased, in order to attempt to achieve a predetermined check value. It is then determined if the inlet pressure actually increases to at least the predetermined check value. If it is determined that the inlet pressure of the gas does not increase to at least the predetermined check value, then an indication of a low cylinder pressure condition is provided. | 04-01-2010 |
| 20100147050 | Choked Flow Isolator for Noise Reduction in Analytical Systems - An apparatus and a method of making a measurement using the same. The apparatus includes a channel through which a fluid flows, a detector, and a choked flow channel. The detector measures a property of the fluid by generating a signal that depends on that property. The signal generated also depends on a pressure of the fluid in the detector. The choked flow channel receives the fluid at a first pressure after the fluid has been measured by the detector, and then transmits the fluid to a downstream location at a second pressure. The fluid reaches a supersonic velocity at one point in the choked flow channel. The choked flow channel may include a convergent-divergent nozzle or an orifice in a structure located in the choked flow channel. | 06-17-2010 |
| 20100186481 | Miniaturized Gas Chromatography Module with Pre-Stage Miniaturized Unit - The invention relates to a miniaturized gas chromatography module, comprising: a gas injector unit having a gas injector sample inlet and outlet, the gas injector inlet being connectable with a source of a substance to be analysed, a separation column having a separation column inlet and outlet, the separation column inlet being in fluid communication with the gas injector sample outlet, a thermal conductivity sensor having a sensor inlet and outlet, the sensor inlet being in fluid communication with the separation column outlet. The invention addresses the problem to broaden the field of application of such gas chromatography module. This is achieved by providing a pre-stage injector having a pre-stage injector sample inlet and outlet, the pre-stage injector for sample inlet being connectable with the source of the substance to be analysed, a pre-stage module having a module inlet and outlet, the module inlet being in fluid communication with the pre-stage injector sample outlet and the module outlet being in fluid communication with the gas injector inlet, wherein the pre-stage module is adapted to transfer heat to a substance flowing from the module inlet to the module outlet. | 07-29-2010 |
| 20100206045 | METHOD FOR IDENTIFYING THE COMPOSITION OF A SAMPLE - The present invention is directed to a method for multidimensional gas chromatography for separating the analytes of a complex sample. The method comprises the steps of introducing the sample onto a first column whereby the sample is separated into at least two segments, introducing at least one segment into a heartcut device whereby the segments are selectively separated into at least two heartcut fractions, introducing at least one of the fractions onto a second column whereby at least one fraction is further separated into at least two analytes, introducing at least one analyte from the second column to a gas chromatography connector, introducing the analyte from the connector to a third column, and introducing the analyte from the third column into a detector whereby the analyte is analyzed and identified. | 08-19-2010 |
| 20110016950 | METHOD AND APPARATUS FOR DETECTING AND QUANTIFYING A CHEMICAL COMPOUND IN A FLUID FLOW - The invention concerns a method for capturing a chemical compound, typically an impurity, and for accumulating said chemical compound on a capture mass CAPT included in at least one removable adsorbant cartridge MC over a long period exceeding 2 days, with a view to the external chemical analysis thereof. | 01-27-2011 |
| 20110016951 | METHOD AND APPARATUS FOR THE CONTROL OF GAS PRESSURE IN GAS CHROMATOGRAPHY COLUMNS - The pressure of a carrier gas entering a gas chromatography (GC) column is controlled by increasing or decreasing the gas pressure over a pressure change cycle by which a desired gas pressure is obtained while avoiding pressure pulses in the column. The pressure change cycle may follow a function that dictates the rate of pressure change. A gas flow controller that controls the gas pressure at the inlet or head of the column may be operated to implement the pressure change cycle. The gas flow controller may be controlled by an electronic controller. | 01-27-2011 |
| 20110088452 | MICROFABRICATED THERMAL MODULATOR FOR COMPREHENSIVE 2D GAS CHROMATOGRAPHY - A two-dimensional gas chromatography system having first and second separation columns, a thermal modulator disposed between the first and second columns and having a plurality of stage channels, and a micro heater monolithically integrated in the thermal modulator. The thermal modulator is operable to trap and focus gas/vapor species within the plurality of stage channels upon cooling and release the gas/vapor species to the second column upon heating by the micro heater. | 04-21-2011 |
| 20110100093 | Gas Chromatograph Apparatus - The present invention aims at realizing an energy-saving mode in which the usage of a carrier gas and the power consumption are sufficiently suppressed without causing damage to the apparatus. When a command for executing the energy-saving mode is entered (S | 05-05-2011 |
| 20110232366 | THERMAL MODULATION DEVICE FOR TWO DIMENSIONAL GAS CHROMATOGRAPHY - A thermal modulation device for a gas chromatography (GC) system a cold zone, a first hot zone and a second hot zone, which are located outside of a GC oven of the GC system, and a flexible capillary column. The cold zone includes a thermoelectric cooler assembly. The first hot zone is adjacent a first side of the cold zone, and has a corresponding first heat source. The second hot zone is adjacent a second side of the cold zone, and has a corresponding second heat source. The flexible capillary column includes a first segment, configured to move between the first hot zone and the cold zone in accordance with a modulation frequency, and a second segment, configured to move between the cold zone and the second hot zone in accordance with the modulation frequency. | 09-29-2011 |
| 20110239738 | APPARATUS AND METHOD FOR ANALYZING OUT-GASSING OF MOLECULAR CONTAMINANTS FROM A SAMPLE - The invention relates to an apparatus ( | 10-06-2011 |
| 20110259081 | GAS ANALYTE SPECTRUM SHARPENING AND SEPARATION WITH MULTI-DIMENSIONAL MICRO-GC FOR GAS CHROMATOGRAPHY ANALYSIS - The disclosure describes embodiments of an apparatus including a first gas chromatograph including a fluid inlet, a fluid outlet, and a first temperature control. A controller is coupled to the first temperature control and includes logic to apply a first temperature profile to the first temperature control to heat, cool, or both heat and cool the first gas chromatograph. Other embodiments are disclosed and claimed. | 10-27-2011 |
| 20110290001 | Gas Chromatograph Comprising A Controllable Switching Device - A gas chromatograph comprising two separating devices disposed one behind the other, and through which a material sample is conducted by a carrier gas. A pressure regulator regulates the pressure of the carrier gas introduced into the first separating device. A controllable switching device is arranged between the two separating devices. The switching device contains a main gas path lying between the two separating devices and two auxiliary gas paths, which are connected to the main gas path through connecting gas paths and are both fed with the carrier gas and contain flow resistors and a controllable valve for setting different pressure conditions. The auxiliary gas paths are supplied with the carrier gas through the same pressure regulator to reduce the design and adjustment effort in setting the pressure conditions, where fixed resistors are used for the flow resistors. | 12-01-2011 |
| 20120090378 | HANDHELD GAS ANALYSIS SYSTEMS FOR POINT-OF-CARE MEDICAL APPLICATIONS - The disclosure describes a substrate with a fluid-handling assembly coupled to the substrate, the fluid-handling assembly including a plurality of fluid-handling components removably coupled to the substrate and removably coupled to each other. The plurality of fluid handling components includes a gas chromatograph having a fluid inlet and a fluid outlet, and a detector array having a fluid inlet and a fluid outlet, wherein the fluid inlet of the detector array is fluidly coupled to the fluid outlet of the gas chromatograph. A control circuit is communicatively coupled to at least one of the plurality of fluid-handling components, and a readout circuit communicatively coupled to the detector array and to the control circuit. Other embodiments are disclosed and claimed. | 04-19-2012 |
| 20120103064 | Helium Conservation Device for a Gas Chromatograph - A device for conserving helium gas in a gas chromatograph system is characterized in that during the majority of an analytical separation, helium is used as the carrier gas while an auxiliary non-helium gas is used to pressurize the inlet and provide for septum purge and split vent flow. Prior an injection period, a coaxial helium flow is established at the column entrance wherein the coaxial helium flow is less than the column flow. Following the injection and sample transfer period, a coaxial helium flow is established wherein the flow is greater than the column flow. | 05-03-2012 |
| 20120125083 | Gas Chromatography With Ambient Pressure Stability Control - In a gas chromatography apparatus, a carrier gas is flowed from a carrier gas supply toward an analytical column at a carrier gas pressure. A sample is added to the carrier gas to form a sample gas. The sample gas is flowed through the analytical column to a gas detector that includes a sample gas outlet communicating with a gas buffer vessel. The carrier gas pressure is controlled relative to a buffer pressure of the gas buffer vessel. | 05-24-2012 |
| 20120131987 | Method and Apparatus for Gas Chromatographic Analysis of a Gas Mixture - A method for analyzing a gas mixture through gas chromatography, wherein a sample of the gas mixture is fed to a dosing volume using a metering valve in a first valve position and, in a second valve position the sample of the gas mixture is fed from the dosing volume through a separating device by a carrier gas. A gas component of interest, arriving at the separating device and separated from the sample, is detected by a detecting device. Part of the separating device and the metering valve are flushed with another carrier gas after the gas component of interest has passed through a part of the separating device to facilitate a precise gas chromatography analysis using minimal technical effort. Another gas sample is then fed from the dosing volume to the separating device using the other carrier gas. | 05-31-2012 |
| 20120272715 | Analysis of Pressurized Reservoir Fluids - A self-contained analysis system operable to assess gas to oil ratio (GOR), shrinkage of reservoir fluid, and composition of pressurized reservoir fluids. The analysis system can be used for extended compositional analysis of rich flashed gas and lean gas samples as well as flashed equilibrium liquids, condensates, and black oils. Analysis of the various samples is achieved without cross contamination, for example, between rich flashed gases and lean gases or between extended natural gas and liquids (e.g., black oils and condensates). The system yields accurate results up to and including C | 11-01-2012 |
| 20130031955 | GAS FLUX MEASUREMENT USING TRAPS - A passive sampling apparatus and method for measuring the cumulative mass of a selected gas being transported through a known cross-sectional area, for example, a soil surface, during a chosen period of time, using absorbent material, are described. Two quantities of absorbent material are disposed in a hollow container, such as a pipe section, and spaced apart such that they may be readily separated for analysis. The absorbent material closest to the soil captures the gas leaving the soil. Under reversed flow conditions, for example when the ambient air enters the ground because of fluctuations in atmospheric pressure, the upper absorbent material captures the component of interest entering the apparatus, thereby preventing this gas from entering the lower material and disturbing the measurement. The apparatus can therefore sequester the component of interest without being affected by the direction of gas transport. | 02-07-2013 |
| 20130118231 | Helium Conservation Device for a Gas Chromatograph - A device for conserving helium gas in a gas chromatograph system is characterized in that during the majority of an analytical separation, helium is used as the carrier gas while an auxiliary non-helium gas is used to pressurize the inlet and provide for septum purge and split vent flow. Prior an injection period, a coaxial helium flow is established at the column entrance wherein the coaxial helium flow is less than the column flow. Following the injection and sample transfer period, a coaxial helium flow is established wherein the flow is greater than the column flow. | 05-16-2013 |
| 20130186175 | Two Stage Thermal Modulator For Gas Chromatography With Thermally Matched Grounding Point - Disclosed herein are two stage thermal modulators that are useful in the separation of the components of an analyte sample in an analytical method, such as gas chromatography. In some embodiments, the thermal modulators described herein include a modulator column coupled to at least one ground point so as to define a plurality of stages that may be independently temperature modulated. In some cases, the modulator column (or stages thereof adjacent to a ground point) and the ground point are thermally matched, so as to limit or eliminate the formation of a temperature differential between the modulator column and a ground point. | 07-25-2013 |
| 20130247650 | GAS CHROMATOGRAPH - A gas chromatograph for preventing leakage of carrier gas and secondary accident such as explosion is provided. A flow rate restricting valve having valve mechanism which mechanically restricts flow rate of carrier gas is disposed at the upstream side of sample inlet portion | 09-26-2013 |
| 20130319080 | CHANNEL BUBBLE REDUCTION DEVICE, CHANNEL BUBBLE REDUCTION METHOD, AND CHROMATOGRAPHY DEVICE - A channel bubble reduction device includes a liquid accommodation portion, that accommodates a liquid, a liquid supply apparatus that, with a pushing operation of a rod, discharges the liquid through an aperture portion of a tube portion, a first channel that connects the aperture portion of the liquid supply apparatus with the liquid accommodation portion, and an air layer formation apparatus that forms an air layer in at least one of the first channel or the tube portion. | 12-05-2013 |
| 20140026638 | OPTICALLY HEATED ANALYTE DESORBER FOR GAS CHROMATOGRAPHY ANALYSIS - Analytes are rapidly desorbed from a carbonaceous sorbent powder with improved quantitation and reduced analyte re-adsorption, thermal degradation, and rearrangement. The sample is distributed in a thin layer onto a desorption surface within a chamber. The layer can be a monolayer. Heating light irradiates the sample through a window, directly and rapidly heating the sample while the desorbed analytes diffuse into a vacuum or are removed by a carrier gas. Finally, the sorbent is flushed from the chamber by a transport gas. The desorption surface can be an inner surface of the window, or a surface of a porous frit that divides the chamber into two sections. The frit can be stainless steel or glass. The carrier gas can be helium, argon, or carbon dioxide. The light source can be a tungsten halogen lamp. A heater can control the chamber temperature according to a heating profile. | 01-30-2014 |
| 20140208827 | HERMETIC MANIFOLD FOR ANALYTICAL INSTRUMENTS - A planar manifold includes a first, generally planar, layer having a plurality of apertures therethrough. A second layer has a plurality of apertures therethrough. A channel layer defines a plurality of channels therein and is interposed between the first layer and the second layer. At least one channel extends in a direction parallel to a plane of the planar manifold and couples an aperture of the first layer to an aperture of the second layer. | 07-31-2014 |
| 20140216134 | GAS COLLECTION AND ANALYSIS SYSTEM WITH FRONT-END AND BACK-END PRE-CONCENTRATORS AND MOISTURE REMOVAL - Embodiments of an apparatus including a front-end pre-concentrator module including an inlet, an outlet, and at least one valve to control flow through the inlet, the outlet, or both. The apparatus includes a back-end pre-concentrator module including an inlet, an outlet, and at least one valve to control flow through the inlet, the outlet, or both, and also includes a gas analysis module having an inlet and an outlet and including a gas chromatograph having an inlet and an outlet. The outlet of the front-end pre-concentrator and the outlet of the back-end pre-concentrator are coupled to the inlet of the gas analysis module. Other embodiments are also disclosed and claimed. | 08-07-2014 |
| 20140260538 | FITTINGLESS PNEUMATIC MULTIPORT SELECTOR VALVE FOR ANALYTIC INSTRUMENTS - A pneumatic multiport selector valve and analytic instrument employing said valve are provided. The valve includes a base having a mounting surface configured to mount to the analytic instrument. The mounting surface has a plurality of apertures therein for coupling to flow conduits of the analytic instrument. At least one piston plate has a number of apertures therethrough. The apertures are configured to slidably receive respective pistons. Pistons are disposed in respective apertures of the at least one piston plate. A cushion layer is disposed between the at least one piston plate and the base. The cushion layer has a plurality of apertures to allow actuation gas therethrough. A plate clamps the at least one piston plate to the base. | 09-18-2014 |
| 20140260539 | GAS CHROMATOGRAPH WITH IMPROVED OPERATION - A gas chromatograph includes a sample inlet configured to receive a sample of interest and a carrier gas inlet configured to receive a carrier gas. A plurality of fluid flow valves are operably coupled to the sample inlet and the carrier gas inlet. A detector is operably coupled to the plurality of fluid flow valves and is configured to provide an analytic indication relative to the sample of interest. A controller is operably coupled to the plurality of fluid flow valves and is coupled to memory storing user-configurable information that is accessed by the controller to affect operation of the gas chromatograph. | 09-18-2014 |
| 20140260540 | SAMPLE INLET WITH MULTI-CAPILLARY LINER FOR GAS CHROMATOGRAPHY - A gas chromatograph (GC) inlet device includes a multi-capillary liner capable of separating components of a sample matrix prior to injecting the sample into an analytical GC column. The device is switchable between different modes, such as a normal injection modes, splitless modes, split modes, a backflush modes, and cut modes. | 09-18-2014 |
| 20140352406 | GAS CHROMATOGRAPH APPARATUS - A gas chromatograph having a column which separates respective components contained in a gas sample introduced via a carrier gas over time, wherein an analysis mode and a standby mode can be switched and executed. The gas chromatograph apparatus comprises: a carrier gas flow path, a column protection gas flow path, a flow path switching part provided between the carrier gas flow path and the column protection gas flow path and a column so that only one of the carrier gas or a column protection gas is introduced into the column, and a flow path control part for controlling the flow switching part so as to introduce the carrier gas into the column at the time of the analysis mode and introduce the column protection gas into the column at the time of the standby mode. | 12-04-2014 |
| 20150089998 | MANIFOLDS AND METHODS OF USING THEM TO CONTROL FLUID FLOWS - Certain embodiments described herein are directed to devices that can be used to control fluid flow through one or more detectors. In some configurations, the device can be configured as a manifold that can receive a positive pressure to decouple the flow of fluid through a chromatography column from fluid flow through a detector. In certain configurations, sample flow can be accelerated into a detector cell comprising one or more filaments. | 04-02-2015 |
| 20150300996 | FLUID ANALYSER COMPRISING A FLAMMABLE SUBSTANCE AND CORRESPONDING METHOD | 10-22-2015 |
| 20150300997 | CONDENSATE-GAS RATIOS OF HYDROCARBON-CONTAINING FLUIDS - Analyzing a hydrocarbon-containing fluid includes providing a hydrocarbon-containing fluid to a separation system including a cyclone separator, and separating the hydrocarbon-containing fluid into a gas phase sample and a liquid phase sample. The liquid phase sample is separated into an aqueous sample and a non-aqueous sample. The volume of the gas phase sample and of the non-aqueous sample are assessed, and the ratio of the volume of the non-aqueous sample to the volume of the gas phase sample yields the condensate-gas ratio. | 10-22-2015 |
| 20150338382 | GAS CHROMATOGRAPHIC (GC) UNIT, SCALABLE GC SYSTEMS USING SAME, AND RELATED METHODS - A gas chromatographic (GC) unit or module may include one or more microfluidic devices, a GC column, and a flow controller (FC) comprising an FC input port for controlling fluid flows and pressures. The GC unit may be reconfigurable to provide different functionalities. The GC unit may be fluidly coupled to various other fluidic devices, such as other GC units, sample inlets, GC detectors, and the like. Multiple GC units and other fluidic devices may be utilized to build GC devices and associated systems of flexible, reconfigurable, and scalable architecture, thereby enabling a variety of modes of operation useful for present and future GC method development. | 11-26-2015 |
| 20160097747 | GAS CHROMATOGRAPH - In order to provide a gas chromatograph in which any adverse effects on a reduction reaction unit that are caused by the degradation of a reduction catalyst, and any adverse effects on an analyzing unit are prevented, a gas chromatograph is provided with: a column that, by causing a sample gas to pass through itself, is able to separate constituents for measurement that are contained in the sample gas; an oxidation reaction unit that uses an oxidizing gas to oxidize the sample gas that has passed through the column so as to create an oxidation sample gas; a reduction reaction unit that uses a reducing gas to reduce the oxidation sample gas created by the oxidation reaction unit so as to create an oxidation reduction sample gas; and an analyzing unit that analyzes the sample gas. | 04-07-2016 |
| 20160109333 | PRESSURE-DROP DEVICE - Pressure-drop device, useful for gas chromatographs or mass spectrometers, containing a planar base plate, a cover plate, a gas inlet opening, and a gas outlet opening, which are connected by a capillary groove, wherein the capillary groove is embodied as an etched groove or pressed groove in the base plate and covered by the cover plate and wherein a plurality of pressure-drop devices can be connected to form a module. | 04-21-2016 |
| 20160123935 | SAMPLE ODOR TESTING DEVICE, TEST RETAINER USED THEREIN, AND SAMPLE ODOR EXAMINATION METHOD - The invention provides a sample odor testing device with which one sample is measured, and then, a next sample can be immediately measured. The sample odor testing device ( | 05-05-2016 |
| 20160187307 | ONE REACTOR POST COLUMN REACTION GC/FID SYSTEM USING Ru CATALYST - Provided is a system comprising a conduit from a gas chromatograph column to a reactor comprising a Ru catalyst, with a hydrogen feed conduit for providing hydrogen to the conduit from the gas chromatograph column, and a conduit from the reactor to an FID detector. This allows one to practice a method for the detection and quantification of organic molecules from a gas chromatograph which comprises passing the effluent from a gas chromatograph column to a reactor comprising a Ru catalyst; adding hydrogen to the effluent prior to the effluent reaching the catalyst; reacting the effluent from the gas chromatograph column in the reactor to reduce all organic containing molecules to CH | 06-30-2016 |
| 20220137007 | PREPARATIVE CHROMATOGRAPH SYSTEM - A preparative chromatograph system includes a sample injector ( | 05-05-2022 |
