Detector Detail Patents (Class 73/23.4)
  • Patent number: 10408802
    Abstract: A thermal conductivity sensing device (1) is disclosed, along with a method for operation of the thermal conductivity sensing device and use of the thermal conductivity sensing device in a system for gas chromatography and a method of carrying out gas chromatography. The thermal conductivity sensing device is for use in sensing one or more gaseous components in a flowing gaseous environment. The device has a first sensor (4B) and a second sensor (4A) for exposure to the same flowing gaseous environment (G). The first sensor has an associated flow altering means (20) to affect gas flow at least at part of the surface of the first sensor, to be different to gas flow at the surface of the second sensor. Each sensor provides an output relating to heat transfer between a surface of the sensor and the gaseous environment. The device is operable to compare outputs of the first and second sensors. The sensor is able to reduce the effects of bulk convection of the flowing gas on thermal conductivity measurements.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: September 10, 2019
    Assignee: Cambridge Enterprise Limited
    Inventors: Vasant Ramachandran Kumar, Sohab Sarfraz, Florin Udrea
  • Patent number: 10115577
    Abstract: Isotope ratio mass spectrometry is effected by: injecting a sample for analysis into a gas chromatography column; directing an effluent from the gas chromatography column to a switching arrangement; and selecting a configuration of the switching arrangement, such that: in a first mode, the effluent from the gas chromatography column is provided as an input to a peak broadener; and in a second mode, an effluent from the peak broadener is provided to a mass spectrometer for isotope ratio mass spectrometry without the effluent from the gas chromatography column being provided as an input to the peak broadener.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: October 30, 2018
    Assignees: California Institute of Technology, Thermo Fisher Scientific (Bremen) GmbH
    Inventors: John Eiler, Jens Griep-Raming
  • Patent number: 9683974
    Abstract: 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.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: June 20, 2017
    Assignee: TricornTech Corporation
    Inventors: Li-Peng Wang, Chien-Lin Huang, Tsung-Kuan A. Chou
  • Patent number: 9581574
    Abstract: A quartz crystal microbalance (QCM) is disclosed for use in a hand-held detection device for detecting the presence of an odorant in hydrocarbon gaseous fuels. The odorant is a thiol-based compound, such as ethanethiol. The QCM is coated with a coating typically containing a reagent that specifically reacts with the thiol of the odorant and alters its oscillation frequency as a result of mass gained in the reaction. Signal measurement and processing circuitry is provided for monitoring the change in oscillation frequency, for nulling out the effect of interfering compounds, and for reporting out the result.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: February 28, 2017
    Assignee: Battelle Memorial Institute
    Inventor: Michael J. Murphy
  • Publication number: 20150143872
    Abstract: 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.
    Type: Application
    Filed: September 7, 2012
    Publication date: May 28, 2015
    Applicant: PARKER-HANNIFIN CORPORATION
    Inventors: Kazi Z. A. Hassan, William M. Cost, John Arthur Morse, Michael L. Doutt, Glenn Stacey Geis
  • Publication number: 20150096349
    Abstract: A non-specific gas analyzer with a wide dynamic range of concentration is used to assess the gas sample for total load of volatile organic constituents, and then control either a dilution with neutral gas or the quantity of sample aspirated in order to consistently deliver an appropriate total load of volatile analyte to a high-sensitivity analyzer. Such high-sensitivity analyzers may be gas chromatography combined with mass spectrometry or related mass spectrometry configurations, such as selected ion flow tube mass spectrometry, gas chromatography combined with ion mobility spectrometry, or related ion mobility configurations such as differential mobility spectrometry.
    Type: Application
    Filed: April 14, 2013
    Publication date: April 9, 2015
    Inventor: Royce W. Johnson
  • Publication number: 20150089997
    Abstract: The subject technology is directed to a CO2-based system and method for rapid determination of the levels and/or the presence or absence of polycyclic aromatic hydrocarbons (PAHs).
    Type: Application
    Filed: October 1, 2014
    Publication date: April 2, 2015
    Inventors: Tarang NEMA, Melvin GAY, Mark RITCHIE
  • Publication number: 20150047414
    Abstract: 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.
    Type: Application
    Filed: August 11, 2014
    Publication date: February 19, 2015
    Inventors: JEAN-MICHEL RIBOULET, LUIZ ARMANDO DOS REIS ALVES
  • Publication number: 20150013430
    Abstract: 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.
    Type: Application
    Filed: September 26, 2014
    Publication date: January 15, 2015
    Inventors: Steven S. Black, Edward J. Bailey, Leighton M. Fields
  • Patent number: 8926900
    Abstract: Improved system for gas chromatography wherein use is made of a separation column and a TCD (Thermal Conductivity Detector), characterized in that the outflow from the separation column is ionized, and the ionization takes place upstream of the TCD. The ionization of the outflow from the separation column upstream of the TCD is surprisingly found in many cases to have a favorable effect on the response of the TCD. The sensitivity of the TCD is found in many cases to increase substantially. For ionization purposes use can be made of electromagnetic radiation, ionizing radiation or pyrolysis. The degree of ionization is preferably measured by means of measuring means provided for the purpose. The response of the TCD and the measurement data obtained with the measuring means are found together to give in many cases even more and better information relating to components present in the outflow from the separation column.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: January 6, 2015
    Assignee: Thermo Fisher Scientific S.p.A.
    Inventors: Job Elders, Gert-Jan Burger
  • Patent number: 8925368
    Abstract: 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.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: January 6, 2015
    Assignee: Korea Basic Science Institute
    Inventors: Sang-Goo Kim, Sung-Min Lim
  • Patent number: 8883508
    Abstract: In some embodiments, apparatus and systems, as well as methods, may operate to draw a formation fluid sample into a sampling port included in a down hole tool, to vaporize some part of the fluid sample to substantially fill an injection port with a gas phase, to differentiate gas components in the gas phase to provide differentiated gas components along a concentration gradient, to detect the differentiated gas components, and to determine a fingerprint of the differentiated gas components. Other apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: November 11, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Christopher M. Jones, Michael T. Pelletier
  • Publication number: 20140260532
    Abstract: 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.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: Rosemount Analytical Inc.
    Inventors: Edward J. Bailey, Leighton M. Fields
  • Patent number: 8779333
    Abstract: A direct contact segmented column heater is described. The heater is capable of a broad heating and cooling range, and exhibits a very rapid response, with heating and cooling rates better than 350° C. min?1. In one configuration one or more of the individual heating devices are provided with full independent control and temperature feedback, and developed to provide excellent thermal stability at all temperatures. The heating devices or in other words active thermal transfer devices are capable of bi-directional operation, selectively heating (i.e., providing heat to) or cooling (i.e., withdrawing heat from) a column and/or contents of a column.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: July 15, 2014
    Assignee: Dublin City University
    Inventors: David Collins, Ekaterina Nesterenko, Brendan Heery, Brett Paull
  • Publication number: 20140157865
    Abstract: 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.
    Type: Application
    Filed: December 18, 2012
    Publication date: June 12, 2014
    Inventors: Sang-Goo Kim, Sung-Min Lim
  • Publication number: 20140150527
    Abstract: 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.
    Type: Application
    Filed: December 4, 2013
    Publication date: June 5, 2014
    Applicant: GEOLOG S.r.l.
    Inventor: Antonio CALLERI
  • Patent number: 8707760
    Abstract: Embodiments of a front-end pre-concentrator module, a back-end pre-concentrator module and a gas analysis subsystem are disclosed, as well as gas analysis systems using combinations of the front-end pre-concentrator module, the back-end pre-concentrator module and the gas analysis subsystem. Embodiments of disposable and re-usable moisture removal filters are disclosed for use alone or in combination with a gas analysis system.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: April 29, 2014
    Assignee: TricornTech Corporation
    Inventors: Tsung-Kuan A. Chou, Li-Peng Wang, Chia-Jung Lu, Shih-Chi Chu, Chien-Lin Huang
  • Patent number: 8695401
    Abstract: 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.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: April 15, 2014
    Assignee: TricornTech Corporation
    Inventors: Li-Peng Wang, Chien-Lin Huang, Tsung-Kuan A. Chou
  • Publication number: 20140076023
    Abstract: 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.
    Type: Application
    Filed: September 4, 2013
    Publication date: March 20, 2014
    Inventors: Aosheng WANG, Ray Dean SHEPHERD, Christoph KLAWUN
  • Publication number: 20140076024
    Abstract: The invention relates to a thermal flow sensor comprising: a support, at least one element intended to be vibrated relative to the support, suspension means for said vibrating element relative to the vibrating element, means for heating the vibrating element, means for electrostatic excitation of the vibrating element so as to vibrate it at its resonance frequency, piezoelectric gauges for detecting the resonance frequency variation of the vibrating element, the gauges forming means for heating the vibrating element by Joule effect and the suspension means comprising two beams formed by nanowires so as to reduce the heat losses from the vibrating element toward the support.
    Type: Application
    Filed: September 18, 2013
    Publication date: March 20, 2014
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENE ALT
    Inventors: Laurent DURAFFOURG, Philippe Andreucci, Eric Colinet, Guillaume Jourdan
  • Publication number: 20140053627
    Abstract: A pulsed discharge helium ionization detector for gas chromatography with multiple combined bias/collecting electrodes.
    Type: Application
    Filed: August 23, 2012
    Publication date: February 27, 2014
    Applicant: Valco Instruments Company, Inc.
    Inventors: Stanley D. Stearns, Huamin Cai
  • Patent number: 8574920
    Abstract: 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.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: November 5, 2013
    Assignee: Institut National d'Optique
    Inventors: Serge Caron, Claude Pare
  • Patent number: 8561484
    Abstract: Certain aspects and examples are directed to sorbent devices and methods of using them. In certain embodiments, a sorbent device comprising a body comprising a sampling inlet, a base and a longitudinal diffusion path between the inlet and the base is provided. In some embodiments, the sorbent device can include at least two sorbent materials fluidically coupled to the longitudinal diffusion path, in which the sorbent materials are arranged from a material with a weakest sorbent strength to a material with a strongest sorbent strength with the weakest sorbent strength material adjacent to the sampling inlet.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: October 22, 2013
    Assignee: PerkinElmer Health Sciences, Inc.
    Inventors: Andrew Tipler, Avinash Dalmia
  • Publication number: 20130239656
    Abstract: 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.
    Type: Application
    Filed: March 14, 2012
    Publication date: September 19, 2013
    Applicant: Siemens Aktiengesellschaft
    Inventors: Aosheng Wang, Ray Dean Shepherd, Christoph Klawun
  • Patent number: 8511140
    Abstract: An apparatus and a method of chemical analysis entail acquiring a chromatogram, median filtering the chromatogram to produce a model baseline, smoothing the model baseline to reduce noise, and subtracting the smoothed model baseline from the acquired chromatogram to produce a modified chromatogram having a substantially flat baseline.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: August 20, 2013
    Assignee: Waters Technologies Corporation
    Inventors: Marc V. Gorenstein, Anthony C. Gilby
  • Publication number: 20130199264
    Abstract: 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.
    Type: Application
    Filed: September 13, 2011
    Publication date: August 8, 2013
    Applicant: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventor: Aya Seike
  • Patent number: 8492152
    Abstract: Apparatus and systems, as well as methods, may operate to draw a formation fluid sample into a sampling port included in a down hole tool or tool body, to vaporize some part of the fluid sample to substantially fill an injection port with a gas phase, to differentiate gas components in the gas phase to provide differentiated gas components along a concentration gradient in a receiving section, to detect the differentiated gas components with a detector, and to determine a fingerprint of the differentiated gas components. A reaction section and a vacuum section may be used for waste consumption and/or absorption.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: July 23, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Christopher M. Jones, Michael T. Pelletier
  • Patent number: 8474303
    Abstract: A chromatographic measurement apparatus for measuring a color development state of an insoluble carrier with a sample solution and a label solution developed thereon to test a test article, the insoluble carrier including a test detection area where a material that binds specifically to a test article is immobilized and a control detection area used for determining an end of measurement. The chromatographic measurement apparatus includes: a determining unit for carrying out determination of validity and determination of necessity of amplification of a test result of the test article; and an amplifying unit for amplifying the color development state according to the result of the determination of necessity of amplification by the determining unit. The amplification is carried out only when it is determined that amplification is necessary.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: July 2, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Katsuya Inana, Tomonori Nishio, Junichi Katada
  • Patent number: 8438903
    Abstract: Semiconductor devices, chromatography devices and integrated circuits for detecting one or more molecules and methods for forming a semiconductor device for detecting one or more molecules are presented. For example, a semiconductor device for detecting one or more molecules includes a channel formed within a semiconductor structure, and at least one detector formed within the semiconductor structure. The at least one detector detects the one or more molecules in the channel. The semiconductor device may optionally comprise one or more additional channels formed within the semiconductor structure. The semiconductor device may, for example, be operative to detect a single molecule.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: May 14, 2013
    Assignee: International Business Machines Corporation
    Inventors: Stanislav Polonsky, Frank Suits
  • Patent number: 8416091
    Abstract: An illumination device is provided at the handle-piece of a sniffing probe, in which the illumination device illuminates the region to be inspected. This incorporation considerably facilitates handling of the sniffing probe in difficult-to-access and poorly illuminated regions, for sniffing probes used for detecting gases, for example, for detecting a gas leakage in a cooling device of a motor vehicle.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: April 9, 2013
    Assignee: Inficon GmbH
    Inventors: Randolf Rolff, Ralf Kilian, Jörn Liebich, Norbert Moser, Norbert Rolff
  • Patent number: 8413484
    Abstract: A method and system for rapid determination of a hydrocarbon type composition, such as crude oils and fractions thereof, and s obtaining the information necessary to assess the yield of commercially valuable fuel and lube oil fractions in a single process, variations of the method and system use Gas Chromatography-FID/Mass Spectrometry and other features, including an auto sampler, a wall coated capillary column, a temperature programmable injector, and a data processing system for compiling and processing the experimental data. The system and method further include a computer system with application software or other processing mechanism and optionally a communication network. One variation provides a graphical user interface for the entry of data and for displaying information, such as in a graphical manner, to show the relationship of various determined outputs and results.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: April 9, 2013
    Assignee: Separation Systems, Inc.
    Inventors: Joaquin A. Lubkowitz, Aaron Mendez, Roberto I. Meneghini
  • Patent number: 8414832
    Abstract: The invention is a chromatography apparatus which comprises at least one capillary column, which has a coil assembly of column material and a small diameter wire coated with an electrically insulating high temperature material encased within a high temperature sheath. The small diameter wire is at least one electrically conductive element co-linear with the column material. Also provided is means for directly resistively heating the at least one capillary column, and means for controlling the temperature of the capillary column. Additionally, the apparatus includes an oxygen gas containing inlet, a hydrogen inlet, an analyte port and a flame region, oxygen delivery means for delivering oxygen through the oxygen inlet to the flame region, a hydrogen and analyte delivery system for delivering hydrogen and analyte to the flame region, and a detector arranged to detect flame emission.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: April 9, 2013
    Inventors: Ned Roques, John Crandall
  • Patent number: 8367413
    Abstract: Apparatus and systems, as well as methods, may operate to draw a formation fluid sample into a sampling port included in a down hole tool or tool body, to vaporize some part of the fluid sample to substantially fill an injection port with a gas phase, to differentiate gas components in the gas phase to provide differentiated gas components along a concentration gradient in a receiving section, to detect the differentiated gas components with a detector, and to determine a fingerprint of the differentiated gas components. The receiving section may comprise a diffusion section. A reaction section and a vacuum section may be used for waste consumption and/or absorption.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: February 5, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Christopher M. Jones, Michael T. Pelletier
  • Publication number: 20130014559
    Abstract: 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.
    Type: Application
    Filed: July 14, 2011
    Publication date: January 17, 2013
    Inventors: Claude Paré, Serge Caron
  • Patent number: 8322189
    Abstract: The present invention is an improvement to two-dimensional comprehensive gas chromatography. The improvement is a one valve switching modulator connecting the two separation columns. The valve includes either a two position eight-port valve or a two position twelve-port valve, and two transfer lines.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: December 4, 2012
    Assignee: ExxonMobil Research and Engineering Company
    Inventor: Frank C. Wang
  • Patent number: 8302458
    Abstract: 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.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: November 6, 2012
    Assignee: Parker-Hannifin Corporation
    Inventors: Kazi Zulfiqur Ali Hassan, William M. Cost, Curtis D. Mowry, Michael P. Siegal, Alex Robinson, Joshua J. Whiting, Stephen W. Howell
  • Patent number: 8272249
    Abstract: A detection device capable of giving atomic and molecular compositions of gases made of concentric tubes and a fiber optic. The body of the detector holds these constituents in their relative positions. A micro-discharge is created between two of the concentric tubes at the tip of the device. The small size of the tubes allows a stable discharge to be achieved. The light from this discharge is delivered from the discharge area to an optical sensing device through the fiber optic. The optical sensing device, along with a computer, analyzes the light to determine the composition of the gas in the discharge. Gas and vacuum are applied through the tubes as needed to aid operation. The detector can be battery powered and used in both hot and toxic environments. Alternatively, a voltmeter can be used to measure impedance across the discharge thus providing another means to determine relative changes in gas composition.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: September 25, 2012
    Inventor: Cyrus M. Herring
  • Patent number: 8220310
    Abstract: A gas analyzer that can be miniaturized and detect a wide variety of gases with high sensitivity, and a method of gas analysis. A separation column is configured so as to pass a sample gas together with a carrier gas through the inside thereof. A surface acoustic wave device has a base material with an annularly continuous annular surface formed of at least a part of a spherical surface; a surface acoustic wave generating means capable of generating a surface acoustic wave that propagates along the annular surface; and a plurality of reaction parts provided along the annular surface so as to change a predetermined physical quantity of the surface acoustic wave in response to the components of the sample gas. The surface acoustic wave device is arranged so that the sample gas passing through the separation column is reacted with the reaction parts.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: July 17, 2012
    Assignee: Tohoku University
    Inventors: Kazushi Yamanaka, Toshihiro Tsuji, Naoya Iwata
  • Patent number: 8210026
    Abstract: A detector in a gas chromatograph includes a detector inlet configured to receive a chromatographic column, the chromatographic column having a column entrance and a column exit, the column exit coupled to the detector inlet, a restriction integrated within the detector, the restriction located to receive an output of the chromatographic column, at least one pressure regulated gas source provided for normal gas chromatograph operation and arranged to provide at least one gas to a location between the integrated restriction and the column exit, and a backflush controller coupled to the pressure regulated gas source, the backflush controller configured to control a pressure differential between the column exit and the column entrance such that the at least one gas backflushes the chromatographic column when a pressure at the column exit exceeds a pressure at the column entrance.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: July 3, 2012
    Assignee: Agilent Technologies, Inc.
    Inventors: Matthew S. Klee, Lawrence John Gajdos, Bruce Douglas Quimby
  • Patent number: 8196449
    Abstract: A micro discharge device (MDD) capable of low voltage discharges in a variety of carrier gases for detection and/or ionization includes a sample introduction capillary having a first open end connected to a gas system and a second open end connected to a cylinder comprising a high dielectric constant material. A high voltage electrode can be placed in close proximity to the outer diameter of the cylinder and at a close linear distance to the second open end of the sample introduction capillary. A region can be formed inside the cylinder between the second end of the sample introduction capillary and the high voltage electrode wherein discharge can be located. An optical emission collector can be located through the flow manifold to a receiving location near the high voltage electrode within a region from inside the cylinder between the high voltage electrode and the manifold.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: June 12, 2012
    Assignee: Honeywell International Inc.
    Inventors: Adam Dewey McBrady, Fouad Nusseibeh, Terry M. Marta, Robert Higashi
  • Patent number: 8178047
    Abstract: An apparatus, according to one aspect, may include a chromatograph and a bulk acoustic resonator. The chromatograph may include a channel that is defined at least partially in a monolithic substrate. The channel may have an inlet to receive a sample and an outlet. A chromatography material may be included in the channel. The bulk acoustic resonator may have a first electrode and a second electrode that has a chemically functionalized surface. The chemically functionalized surface may be included in a chamber that is defined at least partially in the monolithic substrate and that is coupled with the outlet of the channel. Methods of making and using such apparatus, and systems including such apparatus, are also disclosed.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: May 15, 2012
    Assignee: Intel Corporation
    Inventors: Li-Peng Wang, Qing Ma
  • Patent number: 8114200
    Abstract: A portable multi-dimensional gas chromatograph, the gas chromatograph including a carrier gas container, a regulator fluidly connected to the carrier gas container, a dopant chamber containing a reference chemical, at least one pre-concentrator which is fluidly connected to the regulator and the dopant chamber, a first separation column fluidly connected to the at least one pre-concentrator, a second separation column fluidly connected to the at least one pre-concentrator, a first detector fluidly connected to the first separation column, and a second detector fluidly connected to the second separation column.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: February 14, 2012
    Assignee: VPI Enigineering, Inc.
    Inventors: Sheena Alm, James Bentley, John Blankevoort, Mark Kaspersen, Collin Lewis, Derek Maxwell, Ken Wunner
  • Patent number: 8087283
    Abstract: 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.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: January 3, 2012
    Assignee: TricornTech Corporation
    Inventors: Li-Peng Wang, Chien-Lin Huang
  • Publication number: 20110286884
    Abstract: A device using needed hydrogen gas flow and electricity for operation obtained from a fuel cell power supply. Also, water generated by the fuel cell may be recycled for hydrogen generation which may be used by the device and in turn expanded by the fuel cell for further electrical power generation. The device may be a gas chromatograph, a fluid calibration mechanism, a flame ionization detector, or the like.
    Type: Application
    Filed: May 23, 2011
    Publication date: November 24, 2011
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Steven J. Eickhoff, Adam McBrady, Ulrich Bonne, Roland A. Wood
  • Patent number: 8030100
    Abstract: The application relates to a chemical sensor device comprising a substrate (1), a sensor medium (3) formed on the substrate, the sensor medium comprising one-dimensional nanoparticles, wherein the one-dimensional nanoparticles essentially consist of a semiconducting AxBy compound, e.g. V2O5 and detection means (2) for detecting a change of a physical property of the sensor medium e.g. conductivity. The porosity of the sensor medium supports a fast access of the analyte to the sensing material and therefore a fast response of the sensor. The selectivity and sensitivity of the sensor can be tailored by doping the one-dimensional nanoscale material with different dopants or by varying the dopant concentration. Sensitivity of the sensor device to an analyte, preferably an amine, can be increased by increasing relative humidity of the sample to at least 5%.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: October 4, 2011
    Assignee: Sony Deutschland GmbH
    Inventors: Isabelle Besnard, Tobias Vossmeyer, Akio Yasuda, Marko Burghard, Ulrich Schlecht
  • Patent number: 8011224
    Abstract: A feeding device for enriching and feeding a fluid sample into a chemical detector, the feeding device comprises (a) a sorbent element having a sorbent material for sorbing at least one target chemical present in the fluid sample; (b) a desorbing mechanism for generating conditions for the sorbent material to desorb the at least one target chemical out of the sorbent material, thereby to provide an enriched fluid sample; and (c) a loose connector, for providing a loose connection between the feeding device and the chemical detector, such that when the sorbent material desorbs the at least one target chemical, the chemical detector is fed by the enriched fluid sample, and when the sorbent material sorbs the at least one target chemical, the chemical detector is fed by environmental fluids.
    Type: Grant
    Filed: June 1, 2005
    Date of Patent: September 6, 2011
    Assignee: Israel Institute for Biological Research
    Inventors: Shai Kendler, Adi Zifman, Netzah Gratziany, Amnon Sharon, Gad Frishman
  • Patent number: 7959865
    Abstract: The invention relates to a miniaturized gas chromatograph and injector for the same. Said micro-GC is compact and simple and economical to construct. Dead volumes are largely avoided in order to achieve reliable and reproducible measured results. Said miniaturized gas chromatograph comprises at least one injector, one separation column and a detector which are combined on a circuit board to give a gas chromatography module. The injector comprises a first sheet with channels, which is provided with a second sheet with channels and which may be displaced relative to the latter, whereby at least one of the sheets is provided with a layer of plastic, in particular a chemically inert plastic on the side of the sheet facing the other side.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: June 14, 2011
    Assignee: SLS Micro Technology GmbH
    Inventors: Tobias Schmidt, Mathias Mahnke, Uwe Lehmann
  • Patent number: 7930924
    Abstract: 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.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: April 26, 2011
    Assignee: Vancouver Island University
    Inventors: Erik Thomas Krogh, Christopher G. Gill
  • Publication number: 20110091983
    Abstract: Improved system for gas chromatography wherein use is made of a separation column and a TCD (Thermal Conductivity Detector), characterized in that the outflow from the separation column is ionized, and the ionization takes place upstream of the TCD. The ionization of the outflow from the separation column upstream of the TCD is surprisingly found in many cases to have a favourable effect on the response of the TCD. The sensitivity of the TCD is found in many cases to increase substantially. For ionization purposes use can be made of electromagnetic radiation, ionizing radiation or pyrolysis. The degree of ionization is preferably measured by means of measuring means provided for the purpose. The response of the TCD and the measurement data obtained with the measuring means are found together to give in many cases even more and better information relating to components present in the outflow from the separation column.
    Type: Application
    Filed: June 10, 2009
    Publication date: April 21, 2011
    Inventors: Job Elders, Gert-Jan Berger
  • Patent number: 7901632
    Abstract: An array of sensor elements is formed by the incorporation of sensing materials into porous structures, creating sensing systems with extremely large surface areas with sensing molecules attached to mimic the large number of cilia of an olfactory system. In each sensor element, the sensing material or molecules are attached to spacer molecules or groups, which are attached to linker molecules or groups, which are attached to the porous substrate material. More specifically, a porphyrin doped aerogel material is used. The porphyrin sensing material is attached to the aerogel throughout its high surface area pore space. The porphyrin is covalently bonded to the silica network of the aerogel with a triethoxysilyl group linker that covalently attaches to the aerogel, and an alkyl group spacer.
    Type: Grant
    Filed: November 16, 2005
    Date of Patent: March 8, 2011
    Inventor: Chi Yung Fu