Halogen Containing Patents (Class 436/124)
  • Patent number: 10620179
    Abstract: Incendivity test systems and methods are disclosed. Incendivity test systems include a non-flammable gas mixture and a test article. The non-flammable gas mixture includes a thermally reactive reagent that is formulated to thermally react to produce a reaction product. Incendivity test systems also include an energy source configured to apply an energy discharge such as a simulated lightning strike to the test article. Incendivity test systems also include a detection device configured to measure an indicator species in the non-flammable gas mixture (e.g., the thermally reactive reagent and/or the reaction product). Incendivity test methods include contacting the test article with the non-flammable gas mixture, applying the energy discharge to the test article, and then measuring the amount of the indicator species and determining the incendivity of the test article in response to the energy discharge based upon the amount of the indicator species.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: April 14, 2020
    Assignee: The Boeing Company
    Inventors: Jason Scott Damazo, Eddie Kwon, Andrew Michael Robb
  • Patent number: 10407795
    Abstract: The present disclosure relates to methods of monitoring the concentrations of silver ion and complexing agent in tin-silver (SnAg) electrodeposition solutions, and analysis and process control using such methods. Methods can include adding a precipitating agent to an electrodeposition solution including at least tin ions, silver ions, and complexing agent to cause a reaction between at least a portion of the precipitating agent and substantially all of the silver ions (to precipitate silver ions as a precipitant); adding a metallic salt to the electrodeposition solution to cause a reaction with substantially all of the remaining precipitating agent; measuring the endpoint of the silver ion back titration; further adding metallic salt to cause a further reaction with the complexing agent; and measuring the endpoint of the complexing agent titration.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: September 10, 2019
    Assignee: ECI Technology, Inc.
    Inventors: Vishal Parekh, Eugene Shalyt
  • Patent number: 9863920
    Abstract: Disclosed are fibers which contain identification fibers. The identification fibers can contain a one or more of chemical markers and one or more distinct features, or taggants, which may vary among the fibers or be incorporated throughout all of the fibers. The chemical markers and distinct features can be representative of specific supply chain information. The supply chain information can be used to track the fibers from manufacturing through intermediaries, conversion to final product, and/or the consumer. The disclosed embodiments also relate to the method for making and characterizing the fibers. Characterization of the fibers can include identifying chemical markers and distinct features and correlating the chemical markers and distinct features to manufacturer-specific taggants to determine supply chain information.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: January 9, 2018
    Assignee: Eastman Chemical Company
    Inventors: Scott Gregory Gaynor, Andrew Ervin McLeod, Steven Anthony Wilson, Humberto Collazo, Larry Wayne Renfro, Lydia Juanita Salyer, Jeremy Kenneth Steach, Michael John Rodig, Brian Douglas Seiler, Jonathan Horton, Clarissa Tatum
  • Patent number: 9851341
    Abstract: Disclosed are fibers which contain identification fibers. The identification fibers can comprise one or more chemical markers, or taggants, which may vary among the fibers or be incorporated throughout all of the fibers. The disclosure also relates to the method for making and characterizing the fibers. Characterization of the fibers can include identifying chemical markers and correlating the chemical markers and a taggant chemical marker amounts of at least one of the chemical markers to manufacturer-specific taggants to determine supply chain information. The supply chain information can be used to track the fibers from manufacturing through intermediaries, conversion to final product, and/or the consumer.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: December 26, 2017
    Assignee: Eastman Chemical Company
    Inventors: Scott Gregory Gaynor, Andrew Ervin McLeod, Michael John Rodig, Jeremy Kenneth Steach, Humberto Collazo, Steven Anthony Wilson, Lydia J. Salyer, Brian Douglas Seiler, Jonathan Horton
  • Patent number: 9702857
    Abstract: The invention provides a single colorimetric reagent for the measurement of oxidizing agents such as free chlorine in a liquid sample which contains a food dye, whereby the oxidizing agent undergoes a reaction with said food dye. A preferred food dye is Brilliant Blue FCF. There is also provided a control system for regulating the volume of reagent added to a fixed volume of sample according to a control algorithm to give a chosen excess of a reagent compound beyond that required to stoichiometrically react with the target analyte in the sample. Also disclosed are single reagents for colorimetric determination of total alkalinity and calcium hardness.
    Type: Grant
    Filed: May 4, 2011
    Date of Patent: July 11, 2017
    Assignee: AQUALYSIS PTY LTD
    Inventors: Stephen Charles Davis, John David Petty
  • Patent number: 9329191
    Abstract: Carbon monoxide (CO) is a member of the gasotransmitter family that includes NO and H2S and is implicated in a variety of pathological and physiological conditions. Whereas exogenous therapeutic additions of CO to tissues and whole animals have been well studied, the real-time spatial and temporal tracking of CO at the cellular level remains an open challenge. We now report a new type of turn-on fluorescent probe for selective CO detection by exploiting palladium-mediated carbonylation reactivity. The compounds of the invention are capable of detecting CO both in aqueous buffer and in live cells with high selectivity over a range of biologically relevant reactive small molecules, providing a potentially powerful approach for interrogating its chemistry in biological systems.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: May 3, 2016
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Christopher J. Chang, Brian William Michel
  • Patent number: 9274079
    Abstract: Silicon ions in an alkaline etchant solution are analyzed by acidifying a sample of the etchant solution, adding fluoride ions in excess of the concentration required to react with all of the silicon ions, and using a fluoride ion specific electrode (FISE) to detect free fluoride ions in the resulting test solution. Good sensitivity and precision are provided by using a relatively acidic test solution and only a slight excess of fluoride ions, and limiting the analysis range to the maximum expected silicon concentration in the etchant solution.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: March 1, 2016
    Assignee: ECI Technology, Inc.
    Inventors: Eugene Shalyt, Guang Liang, Peter Bratin
  • Patent number: 9234844
    Abstract: A chloride ion fluorescence detection method and device, and a use thereof. The chloride ion fluorescence detection method utilizes chloride ions to influence luminescence characteristics of some photoluminescent substances to change the emission spectrum of the photoluminescent substances. The concentration of the chloride ions is detected through two processes comprising the fiber surface film forming and test liquid preparation of a fluorescent reagent sensitive to the chloride ions and measurement of information of fluorescence peak wavelengths or intensities. The method can be applied to the online assessment of the corrosion environment of steel bar concrete or the measurement of chloride ions in a laboratory.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: January 12, 2016
    Assignee: Shenzhen University
    Inventors: Xuejin Li, Xiangzhong Ren, Zhuo Ni, Yiguang Wu
  • Patent number: 9177766
    Abstract: Methods are described for determining the amount of metabolites of leflunomide in a sample. More specifically, mass spectrometric methods are described for detecting and quantifying teriflunomide in a sample.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: November 3, 2015
    Assignee: Quest Diagnostics Investments Incorporated
    Inventor: Karin O. Thomassian
  • Patent number: 9052285
    Abstract: A system and method for determining the pH value of a liquid. The system and method excite the liquid molecules in the liquid by light with a predetermined wavelength and an intensity component, transmitted through the liquid in a predetermined wavelength range, of the light used for excitation is captured. This intensity component is used to produce a wavelength/intensity absorption characteristic and this absorption characteristic is related to a reference absorption characteristic associated with a specific pH value of the liquid. The system and method thus can be used to obtain drinking water from a fuel for aircraft.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: June 9, 2015
    Assignee: EADS DEUTSCHLAND GmbH
    Inventors: Gerhard Muller, Andreas Helwig, Alois Friedberger, Angelika Hackner
  • Publication number: 20150147769
    Abstract: A method of testing a sample to determine a concentration of a target material included in the sample and a microfluidic device in which a reaction of the sample and a reagent occurs are provided. The method includes mixing a sample with a reagent that changes optical characteristics in accordance with a concentration of chlorine ions in the sample, and a capturing material that captures some of the chlorine ions in the sample; measuring the optical characteristics after mixing the sample with the reagent and the capturing material; and determining a concentration of the chlorine ions in the sample based on the measured optical characteristics.
    Type: Application
    Filed: October 30, 2014
    Publication date: May 28, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kui Hyun KIM, Taguchi TAKAYUKI, Sung Joon PARK, Chang Soo PARK, Sang Hyun BAEK, Tae Han LEE
  • Patent number: 9023652
    Abstract: The present invention relates to detectors for detecting fluorine-containing compounds and/or cyanide containing compounds, including hydrogen fluoride (HF) or HCN gas, hydrofluoric acid in solution, selected chemical warfare agents, selected industrial chemicals which may be hydrolyzed to release HF or HCN gas, compounds containing a cyanide group, and compounds that can release HF or HCN. The detectors comprise i) an organometallic component containing at least one bis-substituted boryl group of the formula —B(RB)(RB?) wherein each RB and each RB? is independently selected from H, halogen, C1-6 alkyl, OR6, N(R6)(R7), SR6, C3-20 aryl or heteroaryl, and C3-20 cycloalkyl or heterocycloalkyl groups, each of which may be optionally substituted, ii) a Lewis base component, and iii) a solid matrix component.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: May 5, 2015
    Assignee: University College Cardiff Consultants Ltd.
    Inventors: Simon Aldridge, Ian A. Fallis
  • Patent number: 8993337
    Abstract: Provided is a heat dried reagent composition that is dry, methods of making it, and methods of using it. The heat dried reagent composition can be characterized by one or more of: stability to the heat drying conditions; storage stability of the heat dried reagent composition; fast rehydration time; rapid assay kinetics; and assay precision. The reagent composition is useful for detecting and/or assessing total chlorine in an aqueous sample, such as pool water.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: March 31, 2015
    Inventors: Vladimir Evtodienko, Lydia Kimble Johnson
  • Patent number: 8993338
    Abstract: The present technology provides an illustrative hydrofluorocarbon (HFC) detection device that includes a decomposition component, a charged particle filter, and a sensing component. The decomposition component is configured to irradiate a gas sample with a radioactive element to decompose HFC gas under conditions sufficient to form hydrogen fluoride (HF) gas and one or more ionized particles. The charged particle filter is configured to filter the one or more ionized particles, and the sensing component is configured to detect the HF gas.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: March 31, 2015
    Assignee: Empire Technology Development LLC
    Inventor: Angele Sjong
  • Patent number: 8987000
    Abstract: Provided is a heat dried reagent composition that is dry, methods of making it, and methods of using it. The heat dried reagent composition can be characterized by one or more of stability to the heat drying conditions; storage stability of the heat dried reagent composition; fast rehydration time; rapid assay kinetics; and assay precision. The reagent composition is useful detecting and/or assessing free chlorine in an aqueous sample, such as pool water.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: March 24, 2015
    Assignee: LaMotte Chemical Products Company
    Inventors: Vladimir Evtodienko, Lydia Kimble Johnson
  • Patent number: 8969093
    Abstract: Constant calibration methods and apparatuses for analytical devices that are located in remote positions in order to allow for reliable and automated measurements of various contaminants within water or other liquid samples. The proposed calibration systems allow for certain methods to measure total amounts of certain trihalomethane and haloacetic acid contaminants, at least, in drinking water samples from such remote locations, through the utilization of a standard addition introduction of known concentrations of such contaminant compounds within target samples, followed by separation through a capillary membrane sampling device and measurement of such different contaminants via flow injection analysis (FIA). In such a manner, the on-line, remote system provides the necessary reliability for a water utility or like entity on which to base any further needed water treatment activities without having to perform such measurements in a distinct lab setting.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 3, 2015
    Assignee: University of Memphis Research Foundation
    Inventors: Gary Lynn Emmert, Paul S. Simone, Jr.
  • Publication number: 20150004710
    Abstract: Reagents and methods are disclosed for detection of oxidizers and inorganic salts and other analytes of interest. The reagents can interact with their target analytes, especially oxidizer compositions or oxidizer-based explosives, to selectively enhance their ionization yield, interacting by chemical reaction or by forming an associative adduct which facilitates their detection. For example, the reagents can adduct with the counter-ion of the intended analyte for improved direct detection and/or react chemically via acid-base reactions to produce a new product for detection. In another aspect of the invention, reactive reagents and methods are also disclosed that facilitate indirect detection of the analyte at lower temperatures based on reduction-oxidation (redox) chemistry. These reagents are particularly useful in detecting oxidizer analytes.
    Type: Application
    Filed: July 23, 2013
    Publication date: January 1, 2015
    Applicant: Massachusetts Institute of Technology
    Inventors: Kerin E. Gregory, Roderick R. Kunz, Michael Sworin
  • Patent number: 8889421
    Abstract: The present invention relates generally to a kit and method for the colorimetric detection of precursors used in the assembly of homemade explosives (HMEs). More specifically, the present invention relates to a bulk HME precursor detection kit and methods of using a kit that is capable of bulk detection of HME precursors, such as urea nitrate, ammonium nitrate and potassium chlorate.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: November 18, 2014
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: Wayne Ouellette, John H. Wilkinson, James N. Thomasson, III, Frederick S. Heim, Herbert Mitchell, Robert G. Best
  • Publication number: 20140315321
    Abstract: A chloride ion fluorescence detection method and device, and a use thereof. The chloride ion fluorescence detection method utilizes chloride ions to influence luminescence characteristics of some photoluminescent substances to change the emission spectrum of the photoluminescent substances. The concentration of the chloride ions is detected through two processes comprising the fiber surface film forming and test liquid preparation of a fluorescent reagent sensitive to the chloride ions and measurement of information of fluorescence peak wavelengths or intensities. The method can be applied to the online assessment of the corrosion environment of steel bar concrete or the measurement of chloride ions in a laboratory.
    Type: Application
    Filed: October 31, 2012
    Publication date: October 23, 2014
    Applicant: Shenzhen University
    Inventors: Xuejin Li, Xiangzhong Ren, Zhuo Ni, Yiguang Wu
  • SK
    Publication number: 20140287517
    Abstract: This invention relates to methods and means for performing pool and other water and liquid testing. Some embodiments of the methods and means of the invention also incorporate additional functionality including, but not limited to communication, sensing, display and data processing elements. Various embodiments of the methods and means of the invention may be performed by and/or implemented in hardware, in software, by one or more entities, and/or by some combination of hardware, software and/or one or more entities.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 25, 2014
    Inventor: Alfred M. Haas
  • Patent number: 8828735
    Abstract: Dendrimer-hydrazides are coupled to polycyclic aromatic hydrocarbons for use in the visual detection of the presence of low levels of fluoride in a sample The dendrimers can have a phenyl core, a first generation of aralkyl ethers, and an optional second generation of aralkyl ethers. The compounds form gels with solvents. In the presence of fluoride ion, the gels undergo color changes and/or gel to liquid phase change.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: September 9, 2014
    Assignee: Indian Institute of Technology Madras
    Inventors: Prasad Edamana, Rajamalli Pachaiyappan
  • Patent number: 8778691
    Abstract: A method for measuring bromate ion is provided that provides high-sensitivity measurement results more simply and more quickly than conventional bromate ion measurement methods. A fluorescent substance that is quenched by coexistence with bromate ions is added to a sample 130 and the fluorescence intensity of the fluorescent substance after quenching is measured, the measured fluorescence intensity being subtracted from the fluorescence intensity of a standard sample containing no bromate ions to calculated the fluorescence intensity difference. The bromate ion concentration is calculated from the calculated fluorescence intensity difference, using a pre-determined calibration line between the fluorescence intensity difference and the bromate ion concentration.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: July 15, 2014
    Assignees: Meta Water Co., Ltd., Ibaraki University
    Inventors: Shukuro Igarashi, Jun Kato, Yoshiharu Tanaka
  • Patent number: 8778692
    Abstract: The invention relates to a method of monitoring a concentration of a halogenated disinfectant in swimming pools or the like and a device for implementing the method. The method comprises: a liquid-injection step of injecting the liquid to be analyzed into the analysis chamber; a reagent-injection step of injecting a reagent into the analysis chamber; a measurement step of measuring the liquid/reagent mixture by colorimetry; a processing step of processing the measurement in relation to data; and a verification step of verifying the colorimetric measurement when the measurement corresponds to the reagent being bleached or to an absence of reaction color.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: July 15, 2014
    Assignee: Pacific Industrie
    Inventor: Zbigniew Stadnicki
  • Patent number: 8778690
    Abstract: The invention provides a porous sensor and sensing methods that use a porous sensor with a porous nanostructure having an optical response and having a portion of the porous nanostructure filled with a fiducial marker that is non-reactive to an analyte of interest. In a preferred sensing method, reflectance spectra from both the fiducial marker and reactive portions of the porous structure are acquired simultaneously. The fiducial marker provides an internal reference that permits compensation for humidity, as well as off angle measurements. In addition, simple visual observations can reveal the presence of an analyte, including human observations.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: July 15, 2014
    Assignee: The Regents of the University of California
    Inventors: Michael J. Sailor, Anne M. Ruminski
  • Patent number: 8748188
    Abstract: Chlorine dioxide solutions are stabilized and prepared for storage, transportation, and testing. Each solution is separated into two samples. Chlorine dioxide is removed from one sample and then each sample is stabilized and prepared such that each sample contains only oxidized and/or reduced forms of chlorine dioxide. The stable samples may be stored, transported, and tested for chlorine dioxide. The samples are tested for the oxidized and/or reduced forms of chlorine dioxide by known methods, and mass balance equations are used to determine the concentration of chlorine dioxide in the original sample before stabilization and preparation.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: June 10, 2014
    Inventors: Allison H. Sampson, Richard L. Sampson, George Dimotsis
  • Patent number: 8748189
    Abstract: A method for measuring bromate ion includes: a first step of introducing a test water sample to an anion exchanger that selectively absorbs bromate ions; a second step of introducing, to the anion exchanger, a hydrochloric acid solution containing a fluorescent substance, a fluorescence intensity of which is changed by the coexistence of bromate ions; a third step of measuring the fluorescence intensity of the fluorescent substance contained in the hydrochloric acid solution discharged from the anion exchanger; and a fourth step of using a calibration curve, which shows a relationship between the fluorescence intensity of the fluorescent substance and the concentration of the bromate ions, to calculate the concentration of the bromate ions that corresponds to the measured fluorescence intensity.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: June 10, 2014
    Assignee: Metawater Co., Ltd.
    Inventors: Natsumi Kita, Eri Hasegawa
  • Publication number: 20140127824
    Abstract: A method for the detection of explosives using a single sample. The explosives include nitro aliphatic and nitro aromatic-based explosives. The method includes steps which require different pHs to discriminate between these types of explosives and at least in the detection step of the nitro aliphatic explosive requires the presence of a nitro aromatic compound. A kit for detecting explosives which includes a medium for collecting a sample, a base optionally impregnated on the medium; and a nitro aromatic solution for detecting a nitro aliphatic explosive by contacting the solution with the sample on the medium. A reagent including a nitro aromatic compound, having one or more additional electron withdrawing groups, in the presence of a basic compound usable for detecting nitro aliphatic explosives.
    Type: Application
    Filed: June 27, 2012
    Publication date: May 8, 2014
    Applicant: MISTRAL DETECTION LTD.
    Inventor: Shai Amisar
  • Patent number: 8647885
    Abstract: Process for detecting a gaseous compound of BX3, HX or X2 type within a gas using a composition containing a probe molecule, characterized in that the probe molecule is a molecule for which the reaction with one or more compounds of BX3, HX or X2 type leads to a variation of at least one of its physicochemical properties, this variation being measurable via a suitable analysis technique, and in that the following steps are carried out in this order: (a) measurement of said physicochemical property of the probe molecule, such as a spectral property, (b) bringing the gas into contact with the composition containing the probe molecule from step (a), (c) repeat measurement of said physicochemical property, (d) correlation of the variation of said spectral property between steps (a) and (c) in the presence of said gaseous compound of BX3, HX or X2 type, the measurement of the physicochemical property from step (a) possibly being a prior step, process for trapping gaseous compounds of BX3, HX or X2 type contained i
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: February 11, 2014
    Assignees: Commissariat a l'Energie Atomique, Centre National de la Recherche Scientifique (CNRS)
    Inventors: Thu-Hoa Tran-Thi, Philippe Banet, Loic Legagneux
  • Publication number: 20130344608
    Abstract: Dendrimer-hydrazides are coupled to polycyclic aromatic hydrocarbons for use in the visual detection of the presence of low levels of fluoride in a sample The dendrimers can have a phenyl core, a first generation of aralkyl ethers, and an optional second generation of aralkyl ethers. The compounds form gels with solvents. In the presence of fluoride ion, the gels undergo color changes and/or gel to liquid phase change.
    Type: Application
    Filed: June 21, 2012
    Publication date: December 26, 2013
    Applicant: INDIAN INSTITUTE OF TECHNOLOGY MADRAS
    Inventors: Prasad EDAMANA, Rajamalli PACHAIYAPPAN
  • Publication number: 20130337572
    Abstract: A method for measuring bromate ion includes: a first step of introducing a test water sample to an anion exchanger that selectively absorbs bromate ions; a second step of introducing, to the anion exchanger, a hydrochloric acid solution containing a fluorescent substance, a fluorescence intensity of which is changed by the coexistence of bromate ions; a third step of measuring the fluorescence intensity of the fluorescent substance contained in the hydrochloric acid solution discharged from the anion exchanger; and a fourth step of using a calibration curve, which shows a relationship between the fluorescence intensity of the fluorescent substance and the concentration of the bromate ions, to calculate the concentration of the bromate ions that corresponds to the measured fluorescence intensity.
    Type: Application
    Filed: August 29, 2012
    Publication date: December 19, 2013
    Applicant: Metawater Co., Ltd.
    Inventors: Natsumi KITA, Eri Hasegawa
  • Patent number: 8603410
    Abstract: A chemical indicating device (10) for detection of chloride ions in a sample is provided. The chemical indicating device (10) includes a carrier matrix (12) and an indicator (14) having silver and vanadate supported on the carrier matrix (12).
    Type: Grant
    Filed: July 21, 2012
    Date of Patent: December 10, 2013
    Assignee: Hach Company
    Inventor: Douglas F. Royer
  • Patent number: 8586383
    Abstract: The invention relates to a device (10) for detection of harmful substances with a measurement unit (28) for measuring at least one harmful substance and an evaluation unit (30) for determining the concentration of the at least one harmful substance. The invention also relates to a method for detecting harmful substances in a gas mixture. It is hereby provided that the gas mixture is tested for a gaseous harmful substance or simultaneously for several gaseous harmful substances, wherein the gaseous harmful substance or the gaseous harmful substances is/are measured with different sensor means, and the gaseous harmful substances are optionally chemically modified such that a measurement is performed with the existing sensor means.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: November 19, 2013
    Assignee: Airsense Analytics
    Inventors: Andreas Walte, Wolf Münchmeyer
  • Patent number: 8586367
    Abstract: The present invention is concerned with the analysis of polar metabolites and provides methods for analyzing polar metabolites including extracting a biological sample with a extraction buffer containing a phase separator and a volatile neutral ammonium salt under conditions which allow for immediate disruption of cells in the biological sample, separating the polar metabolites in the extract by chromatography, and analyzing the separated polar metabolites. Moreover, a method for quenching a biological sample containing cellular material is contemplated.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: November 19, 2013
    Assignee: BASF Plant Science Company GmbH
    Inventors: Gerd Balcke, Tilmann B. Walk, Martin Dostler, Ralf Looser, Susan Carvalho
  • Publication number: 20130280817
    Abstract: The invention relates to a multifunctional detector for gaseous compounds, or mixtures of gaseous compounds, selected from NH2Cl, NHCl2, NCl3, total chlorine, NOx, where x=1 or 2, O3, and X2, where X?Cl, Br, or I, in a sample, said detector including a first sensor including an iodide and a reactive compound selected from starch, amylose, amylopectin, xyloglucan, xylan, chitosan, glycogen, polyvinyl alcohol, cellulose or a cellulose compound, ?-cyclodextrin, theobromine, and polypropylene block polymers and polyethylene oxide block polymers, included in a block of sol-gel material that is absorbent in the UV spectrum but not in the visible spectrum. The invention also relates to the uses of said detector.
    Type: Application
    Filed: December 14, 2011
    Publication date: October 24, 2013
    Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE - CNRS -, COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Thu-Hoa Tran-Thi, Julien Garcia, Thi Dinh Nguyen, Trung-Hieu Nguyen
  • Patent number: 8541240
    Abstract: The present invention generally relates to fluoride receptor reagent compounds that are derived from one or more N-aryl or heteroaryl substituted 1,4,5,8-naphthalenetetracarboxydiimide (NDI) units. The invention also relates to associated methods for the detection of fluoride in a composition. ?-electron orbitals present in the NDI unit of the reagents form a complex with fluoride anions. It is believed that the anion-? interaction results in a charge transfer process between the fluoride anion and the NDI unit, resulting in a number of measurable effects (e.g., colorimetric response).
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: September 24, 2013
    Assignee: Florida State University Research Foundation, Inc.
    Inventors: Sourav Saha, Samit Guha
  • Patent number: 8530241
    Abstract: The present technology provides an illustrative hydrofluorocarbon (HFC) elimination device. An HFC sensing device is configured to detect an ambient, gaseous HFC composition. The HFC elimination device further includes a component comprising a surface that includes glass, and a heating element that is configured to heat the glass to a temperature to decompose the ambient, gaseous HFC composition in response to detection of the ambient, gaseous HFC composition by the HFC sensing device.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: September 10, 2013
    Assignee: Empire Technology Development LLC
    Inventor: Angele Sjong
  • Patent number: 8512968
    Abstract: The invention relates to methods, reagents and kits for detecting enzyme activity using bioluminescence. In particular, it relates to a novel luciferase assay system with reduced background luminescence to allow for increased detection sensitivity. Provided is a method of detecting luciferase activity in a sample using coelenterazine or an analog thereof as a substrate, comprising: (a) initiating luciferase-catalyzed luminescence production by contacting said sample with a luciferase detection reagent to yield a reaction mixture, said reagent comprising coelenterazine and at least one iodide source in an amount sufficient to reduce the autoluminescence of said coelenterazine, (b) incubating said reagent mixture under conditions suitable to produce luminescence, and (c) measuring the luminescence produced. Also provided are detections reagents and kits for use in such a method.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: August 20, 2013
    Assignee: Perkinelmer Health Sciences B.V.
    Inventor: Harry Van Lune
  • Patent number: 8481327
    Abstract: Congeneric, halogenated, fluorinated aromatic compounds A and B are each phenyl radicals, L=oxygen atom, sulfur atom or alkylene radical and p=0 or 1; processes for their preparation and their use.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: July 9, 2013
    Assignee: Chiron AS
    Inventors: Huiling Liu, Gregor Luthe, Jon Eigill Johansen
  • Patent number: 8455261
    Abstract: A method of measuring the concentration of a halogen in a gas stream using measurement means unsuitable for the direct measurement of halogens in a gas stream includes the step of passing a gaseous conversion compound to the halogen containing gas stream to convert the halogen to a detectable gaseous compound.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: June 4, 2013
    Assignee: Edwards Limited
    Inventors: Derek Martin Baker, Sam Olof, Andrew James Seeley
  • Publication number: 20130095571
    Abstract: The present invention discloses a method for quick and simultaneous determination of 16 inorganic anions and organic acids in tobacco by ion chromatography The retention behavior of inorganic anions and organic acids on the anion exchange column was investigated using potassium hydroxide produced by EGC-II KOH eluent autogenerator as eluent. The optimized gradient elution condition was obtained. The samples were prepared through extraction, filtration and dilution before analysis. The separation was performed on an anion exchange column. The time of the gradient elution program was 50 mins. Under the optimized conditions, the calibration of peak area for all the analytes were linear in the ranges of 105. The method in the present invention has the advantadges of simplicity, rapidity and accuracy, and is able to simultaneously determine 16 inorganic anions and organic acids in tobacco by one single time of injection.
    Type: Application
    Filed: December 7, 2011
    Publication date: April 18, 2013
    Applicant: CHINA TOBACCO GUANGDONG INDUSTRIAL CO., LTD.
    Inventors: Jing Hu, Ruifeng Zhao, Wenzhuang Shi, Feng Li, Rong Zhou, Bing Han
  • Patent number: 8414831
    Abstract: A chlorine gas sensor system includes carbon nanotubes at least partially coated with a metal oxide deposited on a substrate, and a source of infra-red light positioned to illuminate at least a portion of the coated nanotubes.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: April 9, 2013
    Assignee: The University of Toledo
    Inventor: Ahalapitiya H. Jayatissa
  • Patent number: 8377704
    Abstract: Provided herein are methods of detecting anions in solution. In particular, the methods can be used to detect trace anions in solution. For example, the anions can be present in an amount of between about 500 femtomoles to about 10 millimoles.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: February 19, 2013
    Assignee: NUtech Ventures
    Inventors: Stephen DiMagno, Ronald Cerny
  • Publication number: 20130034908
    Abstract: An analytical device, in particular, a paper analytical device (PAD), for detection of at least two chemical components indicative of a low quality pharmaceutical product is provided. The analytical device can include a porous, hydrophilic medium, at least two assay regions associated with the porous, hydrophilic medium, at least one assay reagent or precursor thereof in the assay regions, and at least one electronically readable information zone.
    Type: Application
    Filed: August 3, 2012
    Publication date: February 7, 2013
    Applicants: UNIVERSITY OF NOTRE DAME DU LAC, SAINT MARY'S COLLEGE
    Inventors: Toni Lee Owen Barstis, Patrick Joseph Flynn, Marya Lieberman
  • Publication number: 20120214248
    Abstract: A method for determining the concentration of chlorine dioxide in a chlorine dioxide solution having the following steps: (1) isolating two samples, Sample 1 and Sample 2, from the chlorine dioxide solution; (2) stripping the chlorine dioxide from Sample 1; (3) completely converting the chlorine dioxide in Sample 2 to other chlorine species; (4) transporting the chlorine dioxide samples either within the facility or outside the facility to a testing site; (5) separately determining the concentration of the chlorine containing species in each of Samples 1 and 2; and (6) calculating the concentration of chlorine dioxide in said chlorine dioxide solution based upon the information obtained in step (5).
    Type: Application
    Filed: December 21, 2011
    Publication date: August 23, 2012
    Inventors: Allison H. Sampson, Richard L. Sampson, George Dimotsis
  • Patent number: 8231841
    Abstract: A chemical indicating device (10) for detection of chloride ions in a sample is provided. The chemical indicating device (10) includes a carrier matrix (12) and an indicator (14) having silver and vanadate supported on the carrier matrix (12). A method for detecting chloride ions is also provided.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: July 31, 2012
    Assignee: Hach Company
    Inventor: Douglas F. Royer
  • Patent number: 8226832
    Abstract: A method that can be used in a portable system and apparatus to effectively and efficiently treat aqueous fluids by quickly and reliably adjusting and controlling the free residual level of disinfectants, contaminants or additives through the addition of one or more treating agents such as oxidizing chemicals and/or other special-purpose additives, and that can continuously store, log, retrieve and report the related fluid composition data and other operating parameters on a real-time basis at either the use site or a remote location. A preferred use for the subject method is managing the chemistry of disinfectant, contaminant and/or additive levels in aqueous fluids used in hydraulic fracturing operations, and controlling the free residual levels of the disinfectant or contaminants within the fluids, including fluids maintained in frac tanks during temporary cessation of a hydraulic fracturing operation.
    Type: Grant
    Filed: April 9, 2010
    Date of Patent: July 24, 2012
    Assignee: NCH Ecoservices, LLC
    Inventors: Jerome F. Angelilli, Patrick D. Guccione, Billy E. Pierce, Daniel Wai-tak Wong, John H. Williams
  • Publication number: 20120171713
    Abstract: A semiconductor die includes a chemical sensor, a digital to analog converter, and microcontroller formed therein. The chemical sensor detects the presence of a chemical and outputs an analog signal to the digital to analog converter. The analog to digital converter converts the analog signal to a digital signal. The analog to digital converter outputs the digital signal to the microcontroller. Microcontroller calculates a value of the concentration of the selected chemical.
    Type: Application
    Filed: October 31, 2011
    Publication date: July 5, 2012
    Applicant: STMICROELECTRONICS PTE LTD.
    Inventors: Suman Cherian, Olivier Le Neel
  • Publication number: 20120164738
    Abstract: The invention relates to methods and compositions for the rapid detection of small ligands, such as cyanide, carbon monoxide or azide, in small quantities. Specifically, metmyoglobin is used to bind small ligands which yield a product with a characteristic absorbance spectrum that is detectable and quantifiable. Also disclosed is a kit for detecting small ligands with metmyoglobin, which is portable and provides for practice of the invention without the use of harsh solvents or chemical reagents.
    Type: Application
    Filed: May 5, 2008
    Publication date: June 28, 2012
    Applicant: U.S. ARMY MEDICAL RESEARCH AND MATERIEL COMMAND
    Inventors: James B. Kelly, Fred M. Hawkridge, Steven I. Baskin, Matthew G. Clark, Scott Willens
  • Publication number: 20120142545
    Abstract: A method for the equilibration of enriched isotope species and natural isotope species prior to mass spectrometric analysis using solid phase and/or microwave isotope ratio equilibration and measurement.
    Type: Application
    Filed: December 7, 2007
    Publication date: June 7, 2012
    Inventors: Howard M. Kingston, Mizanur Rahman, David Lineman, Mehmet Pamukcu
  • Publication number: 20120142115
    Abstract: The invention provides a method and apparatus for determining the amount of various materials in a liquid sample. Because the apparatus is particularly resilient it can be used repeatedly with very harsh liquid samples such as boot water from an oil refinery. The apparatus uses at least one volume and/or concentration independent optical analysis method to determine at least one of: the pH, amount of chloride, and/or amount of iron in the sample. The optical property can be colorimetric, fluorescent or both and result from adding dyes, complexing agents, turbidity inducing compounds, and other optically effecting reagents to the sample. Because the measurements are concentration and volume independent they can be done continuously, quickly, and avoid the inconvenient start and stop procedures in prior art measurement regimens.
    Type: Application
    Filed: April 27, 2011
    Publication date: June 7, 2012
    Inventors: Rodney H. Banks, Steven R. Ciota, Sascha J. Welz