Class / Patent application number | Description | Number of patent applications / Date published |
073230400 | Detector detail | 27 |
20080289397 | PORTABLE ANALYTICAL SYSTEM FOR DETECTING ORGANIC CHEMICALS IN WATER - A portable analytical system for detecting organic chemicals in water comprising a miniature preconcentrator and a SAW detector, the latter being characterized by a nanoporous carbon coating that provides improved response compared to prior art polymer coatings, particularly when detecting low concentrations of trihalomethane chemicals, such as chloroform and bromoform. | 11-27-2008 |
20090038372 | HEATED TRANSFER LINE FOR USE IN HIGH TEMPERATURE MICROWAVE CHROMATOGRAPHY - A heat transfer line assembly is disclosed for microwave heated chromatography instruments. Analytical instruments incorporating a microwave oven including the heated transfer lines are also disclosed as well as methods for making and using same. | 02-12-2009 |
20090084157 | SYSTEM FOR THE ONLINE MEASUREMENT OF VOLATILE AND SEMI-VOLATILE COMPOUNDS AND USE THEREOF - A system and method of measuring volatile and semi-volatile reduced organic compound content and volatile and semi-volatile oxidized organic compound content in a sample, using a dual detection system is provided. The method comprises introducing the sample into a semi-permeable membrane introduction interface, sweeping permeate from the membrane introduction interface with a sweep gas, splitting the permeate into a first stream and a second stream, essentially simultaneously detecting volatile and semi-volatile reduced organic compounds and oxidized and semi-volatile organic compounds with a flame ionization detector and an electron capture detector, and computing differences in detector signals, thereby measuring volatile and semi-volatile reduced organic content and volatile and semi-volatile oxidized organic compound content in the sample. | 04-02-2009 |
20090308136 | Handheld gas analysis systems for point-of-care medical applications - The disclosure describes an apparatus including a substrate and a gas chromatograph having a fluid inlet and a fluid outlet and being mounted to the substrate. A detector array having a fluid inlet and a fluid outlet and is mounted to the substrate, and the fluid inlet of the detector array is fluidly coupled to the fluid outlet of the gas chromatograph. A control is circuit coupled to the gas chromatograph and to the detector array such that the control circuit can communicate with the gas chromatograph and to the detector array, and a readout circuit is coupled to the detector array and to the control circuit such that the readout circuit can communicate with the control circuit and the detector array. Other embodiments are disclosed and claimed. | 12-17-2009 |
20110005300 | CASCADED GAS CHROMATOGRAPHS (CGCs) WITH INDIVIDUAL TEMPERATURE CONTROL AND GAS ANALYSIS SYSTEMS USING SAME - The disclosure describes a cascaded gas chromatograph including a first gas chromatograph having a first temperature control and a second gas chromatograph coupled to the first gas chromatograph. The first and second chromatographs have individual temperature controls that can be controlled independently of each other. Other embodiments are disclosed and claimed. | 01-13-2011 |
20130014559 | HIGH SENSITIVITY POLARIMETRIC CHEMICAL SENSORAANM Pare; ClaudeAACO USAAGP Pare; Claude USAANM Caron; SergeAACO USAAGP Caron; Serge US - An optical fiber polarimetric chemical sensor for capillary gas chromatography in which a sample fluid is injected into a capillary in the form of a periodic pulse train. Each individual pulse defines a moving polarization coupling zone that affects the polarization state of the light propagating in a birefringent optical waveguide that includes the capillary. The spacing between consecutive coupling zones can be made equal to the polarization beat length of the waveguide when the injection frequency of the pulses is properly selected, thus defining a resonance condition for a given analyte. The contributions of the successive coupling zones present along the length of the capillary then add up in phase, thus resulting in a detected optical signal having an enhanced amplitude peak at the injection frequency. In this manner, the sensitivity can be enhanced. | 01-17-2013 |
20130199264 | FLUID BASED ANALYTE DETECTOR - A gas chromatograph having a gas inlet port, a sealed fluid flow channel, a gas outlet port, a gas outlet port in fluid connection with a second end of the fluid flow channel, and a gas molecule detector in fluid connection with the gas outlet port, is disclosed. The first end of the sealed fluid flow channel is in fluid connection with the gas inlet port. The sealed fluid flow channel contains one or more pairs of electrodes running lengthwise along the inner surface of the fluid flow channel. | 08-08-2013 |
20130239656 | Gas Chromatograph - A gas chromatograph comprising a separation column for separating components of a sample of a gas mixture fed through the separation column by a carrier gas, a thermal conductivity detector including a sensing element arranged downstream from the separation column and configured to detect the separated components in a non-destructive manner and to generate a detector signal in response the detected components, an evaluation unit for evaluating the detector signals to determine concentrations of the detected components, and a further thermal conductivity detector including a further sensing element arranged immediately downstream or upstream from the thermal conductivity detector and configured to detect the separated components and to generate a further detector signal in response to the detected components, where the evaluation unit is configured to compare the detector signal with the further detector signal to recognize and signal a loss of or improper detection by the thermal conductivity detector. | 09-19-2013 |
20140053627 | Pulsed discharge helium ionization detector with multiple combined bias/collecting electrodes for gas chromatography and method of use - A pulsed discharge helium ionization detector for gas chromatography with multiple combined bias/collecting electrodes. | 02-27-2014 |
20140076023 | GAS CHROMATOGRAPH - A gas chromatograph in which components of a sample of a gas mixture are separated via a separation column, a sensing element of a thermal conductivity detector is operated at a first temperature to detect separated components and to generate a detector signal in response to detected components, an evaluation unit evaluates detector signals and determines concentrations of detected components, a further sensing element of a further thermal conductivity detector is operated at a second temperature different from the first temperature, to detect gas components of widely different concentration ranges at high sensitivity, where the thermal conductivity detectors are calibrated for different concentration ranges, and the evaluation unit compares the detector signal with the detector signal of the further thermal conductivity detector to output a concentration value determined from the signal of the thermal conductivity detector calibrated for the measured component concentration. | 03-20-2014 |
20140076024 | THERMAL FLOW SENSOR WITH VIBRATING ELEMENT AND GAS SENSOR COMPRISING AT LEAST ONE SUCH SENSOR - The invention relates to a thermal flow sensor comprising:
| 03-20-2014 |
20140150527 | Device for measuring total or fractionated quantity of hydrocarbons in a solid sample - A system of analysis operating preferably on a sample of rock derived from oil drilling in a site situation and possibly under difficult environmental conditions, which allows the total quantity of hydrocarbons contained in said sample to be measured, both already present and generable following transformation of organic matter contained in the same sample, in the first case also allowing a quantity of each single hydrocarbon species to be measured. The time range wherein said system succeeds in completing these analyses is sufficiently reduced to allow use of the results for reference and as a decision instrument for drilling, and the configuration of said system guarantees the stability of functioning thereof sufficient for allowing the use thereof also under difficult environmental conditions, on land or at sea, and allows for convenient use thereof also by an operator simply trained in the use of the instrument. | 06-05-2014 |
20140157865 | MULTI-DIMENSIONAL GAS CHROMATOGRAPHY CHIP WITH MODULATOR - Disclosed is a multi-dimensional gas chromatography chip with a modulator. The multi-dimensional gas chromatography chip includes a chip body including first to third substrates; first micro channel pattern parts including first micro channels; second micro channel pattern parts including second micro channels; a gas inlet to supply a mobile phase; a gas outlet to discharge the mobile phase; position alignment markers formed on one surface of the first substrate, both surfaces of the second substrates and one surface of the third substrate; a first stationary phase spin-coated between the first and second substrates and a second stationary phase spin-coated between the second and third substrates; and a modulator provided in a region serving as an inlet side of the first micro channel pattern parts as well as an outlet side of the second micro channel pattern parts. | 06-12-2014 |
20140260532 | PROCESS ANALYTIC DEVICE WITH IMPROVED THERMAL STABILITY - A process analytic device has an input to receive a sample of interest. An analytic detector is operably coupled to receive the sample of interest and to provide an analytic output relative to the sample of interest. A heat pipe is thermally coupled to the analytic detector. In one embodiment, the process analytic device is a process gas chromatograph. | 09-18-2014 |
20150013430 | PROCESS ANALYTIC DEVICE WITH IMPROVED THERMAL STABILITY - A process analytic device includes an input to receive a sample of interest and an analytic detector operably coupled to receive the sample of interest. An analytic output is provided relative to the sample of interest. A plurality of heat pipes is thermally coupled to the analytic detector. | 01-15-2015 |
20150047414 | METHOD FOR ANALYZING A CORK STOPPER FOR THE PRESENCE OF 2,4,6-TRICHLOROANISOLE AND DEVICE FOR PERFORMING THE SAME - A non-destructive method for analyzing a cork stopper for the presence of 2,4,6-trichloroanisole. The stopper is introduced into a hermetically closed container. The container containing the stopper is heated under conditions vaporizing any 2,4,6-trichloroanisole present in the stopper. A gaseous sample of the atmosphere surrounding the stopper in the container is collected and analyzed for the presence of 2,4,6-trichloroanisole. This method allows the selection, in a batch of cork stoppers, of the stoppers that are substantially free of 2,4,6-trichloroanisole, in a non-destructive manner. | 02-19-2015 |
20150089997 | SYSTEM AND METHOD FOR RAPID ANALYSIS OF POLYCYCLIC AROMATIC HYDROCARBONS - The subject technology is directed to a CO | 04-02-2015 |
20150143872 | ANALYTICAL SYSTEM AND METHOD FOR DETECTING VOLATILE ORGANIC COMPOUNDS IN WATER - An analytical system and method for detecting volatile organic chemicals in water including a coated SAW detector that provides for improved reduction of moisture at the coating of the SAW detector. A stabilized SAW sensitivity and long lasting calibration is achieved. The analytical system further includes an improved sample vessel and sparger that allow for easy grab sample analysis, while also providing efficient purging of the volatile organic compounds from the water sample. In addition, an improved preconcentrator provides a stabilized sorbent bed. | 05-28-2015 |
20150300999 | MEASUREMENT SYSTEM INCLUDING A NETWORK OF NANOELECTROMECHANICAL SYSTEM RESONATORS - The invention relates to a measurement system including a network of nanoelectromechanical system (NEMS) resonators, characterized in that: each one of said resonators includes: an electrostatic activation device capable of generating a vibration of a beam exposed to said excitation signal, at least one piezoresistive stress gauge made of a doped semiconducting material, extending from the beam so as to detect a movement of said beam, the variation in the electrical resistance of said at least one gauge supplying an output signal; said network includes at least two groups of resonators, each group including at least two resonators having an identical empty resonance frequency, each group of resonators having an empty resonance frequency different from that of each other group; the resonators forming each group are connected in parallel; the groups of resonators forming said network are connected in parallel; said system includes a reading device designed to supply an excitation signal at the network input and to determine the resonance frequency of a group of resonators which is selected by injecting, into said excitation signal, a frequency component corresponding to the empty resonance frequency of each selected group of resonators, and by identifying, in the output signal of the network, a resonance frequency component of the selected group of resonators. | 10-22-2015 |
20150377844 | DISCHARGE IONIZATION CURRENT DETECTOR - A discharge ionization current detector of the present invention is used for a detector for a gas chromatograph and suitable for analyzing high-boiling components. A discharge ionization current detector | 12-31-2015 |
20160084808 | METHOD AND DEVICE FOR DETERMINING A COMPOSITION OF A GAS SAMPLE PROCESSED BY MEANS OF GAS CHROMATOGRAPHY - A method for determining a composition of a gas sample comprising the following steps: running the sample through a processing chain comprising a gas chromatography column and a gas detector arranged at the outlet of the gas chromatography column; obtaining, at the output of the detector, a representative electrical signal of the composition; determining the gas composition by processing this electrical signal. The determination of the composition of the sample is performed on the basis of a combination of a direct probabilistic model of the chromatography column, this model comprising at least one law of probability defining, for at least one gas species liable to be found in the sample, a probability at each moment that a molecule of this gas species is discharged from the chromatography column, and an impulse response model of the detector. It is performed by inverting this combination of models using the electrical signal. | 03-24-2016 |
20160091475 | MULTI-COMPONENT SENSING COATING FOR PRESSURE AND TEMPERATURE MEASUREMENTS - An environment sensitive coating system is disclosed that includes a pressure sensitive component comprising a first portion of an oxygen sensitive light emitting material dispersed in an oxygen permeable binder; and a pressure reference component comprising a second portion of the oxygen sensitive light emitting material dispersed in an oxygen impermeable binder. | 03-31-2016 |
20160103105 | THERMAL CONDUCTIVITY DETECTOR AND GAS CHROMATOGRAPH - A thermal conductivity detector that causes a fluid to come into contact with the surface of a heated temperature sensing element, that causes the temperature of the temperature sensing element to change according to the thermal conductivity of the fluid, and that detects the fluid based on a change in the electrical resistance of the temperature sensing element at that time or on a change in the value of a current to be applied to the temperature sensing element is provided. The thermal conductivity detector includes a cell space where the temperature sensing element is accommodated and to which a fluid is introduced and from which the fluid is discharged, a buffer space that is connected to a fluid outlet of the cell space, and a discharge channel that is connected to a fluid outlet of the buffer space. | 04-14-2016 |
20160153945 | METHOD AND KIT FOR THE IDENTIFICATION OF COMPOUNDS IN AN ORGANIC MIXTURE | 06-02-2016 |
20170234834 | SYSTEM AND METHOD FOR OPTIMAL CHEMICAL ANALYSIS | 08-17-2017 |
20180024100 | TEMPERATURE CONTROL FOR SURFACE ACOUSTIC WAVE SENSOR | 01-25-2018 |
20190145942 | Improvements in or Relating to Organic Compounds | 05-16-2019 |