| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 436119000 | SULFUR CONTAINING | 40 |
| 20100120162 | PROCESS FOR DETERMINING SULFUR CONTENT IN FUEL - With a method for the determination of the sulfur content in fuels, a fuel sample is introduced into a miniaturized and/or microstructured combustion chamber ( | 05-13-2010 |
| 20100267159 | SIMULTANEOUS ANALYSIS OF CHLORIDES AND SULFIDES BY LOW PRESSURE ION EXCLUSION CHROMATOGRAPHY - A process for simultaneous assay of chlorides and sulfides by low pressure ion exclusion chromatography is provided, and in said process an analytic apparatus comprising a sampling valve, a sampling loop, an ion exclusion column and an analytic detection flow path is used, and said process comprises the following steps: (1) in the analytic detection flow path, the mixture of developer R | 10-21-2010 |
| 20110027900 | Thiol quantitation assays and related methods - The present invention is generally directed to thiol quantitation assays, methods of performing the assays, and compounds used in the assays. It is more specifically directed to assays that include one or more disulfides and related molecules and methods. The disulfides contain a FRET pair. | 02-03-2011 |
| 20110033943 | HYDROGEN SULPHIDE SAMPLING METHOD - The invention relates to a method for sampling a sulphur-containing solid product including supplying a gas flow comprising hydrogen sulphide, bringing the gas flow into contact with a solid reagent and reacting the solid reagent with the hydrogen sulphide contained in the gas flow, the reaction fixing the sulphur of the hydrogen sulphide by forming a sulphur-containing solid product which is different in colour from the solid reagent, and recovering the sulphur-containing solid product. The invention also relates to a device suitable for the implementation of this method. | 02-10-2011 |
| 20110217787 | CONCENTRATION MEASURING APPARATUS FOR HYDROGEN SULFIDE IN GAS FLOW, AND METHOD FOR DETERMINING SULFIDE ION - A concentration measuring apparatus for hydrogen sulfide includes an absorbing liquid that can absorb gaseous hydrogen sulfide as sulfide ion; a hollow fiber membrane contactor that contacts a gas flow with a flow of the absorbing liquid through a membrane, so that the absorbing liquid absorbs gaseous hydrogen sulfide in the gas flow as sulfide ion; a pump for a first channel that feeds the absorbing liquid to the hollow fiber membrane contactor; an oxidizer that exothermically reacts with sulfide ion; a pump for a second channel that feeds the oxidizer to the absorbing liquid; a first thermometer that measures a temperature of the absorbing liquid before the sulfide ion that the absorbing liquid has absorbed exothermically reacts with the oxidizer; and a second thermometer that measures the temperature of the absorbing liquid after the sulfide ion that the absorbing liquid has absorbed exothermically reacts with the oxidizer. | 09-08-2011 |
| 20120077278 | METHODS AND KITS FOR DETECTING, DIAGNOSING AND MONITORING DISEASES - The invention provides methods and kits for detecting metabolites in a body fluid by contacting a sample of the body fluid with at least one reducible dye at a pH-value which is higher than the pKa-value of the reducible dye, whereby a color change resulting from reduction of the reducible dye is indicative of the presence of metabolites in the body fluid. The methods and kits are of use in the detection and monitoring of disease conditions. | 03-29-2012 |
| 20120129267 | SULFUR BREAKTHROUGH DETECTION ASSEMBLY FOR USE IN A FUEL UTILIZATION SYSTEM AND SULFUR BREAKTHROUGH DETECTION METHOD - A sulfur breakthrough monitoring assembly for use in a fuel utilization system for detecting sulfur-containing compounds in desulfurized fuel, said monitoring assembly comprising: a heater for heating desulfurized fuel to a predetermined temperature, the predetermined temperature being between 450° C. and 600° C., a sulfur breakthrough detector adapted to receive heated fuel from the heater and including at least a reforming catalyst bed for reforming the heated fuel and a plurality of temperature sensors including a first temperature sensor for sensing temperature of the heated fuel before the fuel is conveyed through the reforming catalyst bed and a second temperature sensor for sensing temperature in the reforming catalyst bed, and a controller for determining whether concentration of the sulfur-containing compounds in the fuel exceeds a first predetermined concentration based on temperature outputs from the first and second temperature sensors. | 05-24-2012 |
| 20120135532 | Sensor Comprising Resrufin Levulinate Having Sulfite Ion Selectivity and Method for Monitoring Sulfite Ion Using the Same - The present invention relates to a sensor comprising a resorufin compound having sulfite ion selectivity and a method for detecting sulfite ions using the same. More specifically, the resorufin compound may have outstandingly increased fluorescence intensity by a deprotection reaction that a levulinyl group is cleaved with a sulfite ion to be used as a selective fluorescence sensor of turn-on type, and also represent a chromogenic change to detect sulfite ions by naked eye. | 05-31-2012 |
| 20120225488 | PARTICULATE MEASUREMENT SYSTEM - Disclosed is a vehicle emissions monitoring system capable of providing an accurate, real-time estimate of an amount of particulate matter (PM) within a vehicle's exhaust. The system is capable of accurately differentiating the composition of that PM by identifying amounts attributable to soot, SOF, and sulfate. | 09-06-2012 |
| 20120276648 | ELECTROSTATICALLY STABILIZED METAL SULFIDE NANOPARTICLES FOR COLORIMETRIC MEASUREMENT OF HYDROGEN SULFIDE - Methods and related apparatuses and mixtures are described for spectroscopic detection of hydrogen sulfide in a fluid, for example a formation fluid downhole. A reagent mixture is combined with the fluid. The reagent mixture includes metal ions for reacting with hydrogen sulfide forming a metal sulfide, and a solvent that stabilizes the metal sulfide nanoparticles and assist in preventing precipitation by electrostatic stabilization. The solvent includes a property having a density above 1 kg/l. Further, dissolving the metal ions into the solvent to create the reagent mixture, and mixing the reagent mixture with the hydrogen sulfide sample in a formation. So, the metal ions of the reagent mixture react with the hydrogen sulfide sample to form the metal sulfide nanoparticles, resulting in the metal sulfide nanoparticles having properties with a density from 1 kg/l to about 8 kg/l. | 11-01-2012 |
| 20130115707 | METHOD FOR REMOVING SULFUR-COMPRISING COMPOUNDS FROM A HYDROCARBONACEOUS GAS MIXTURE - A method for removing sulfur-comprising compounds from a hydrocarbonaceous gas mixture, in which an adsorber material is brought into contact with the hydrocarbonaceous gas mixture, wherein the adsorber material comprises a material that adsorbs sulfur-comprising compounds and, in addition, comprises at least one transition metal compound which changes color thereof by reaction with the sulfur-comprising compounds. | 05-09-2013 |
| 20130130397 | COMPOSITIONS AND METHODS FOR SIMULTANEOUS DETECTION OF VOLATILE SULFUR COMPOUNDS AND POLYAMINES - Disclosed are compositions and methods useful for the rapid and facile simultaneous detection of malodorous bacterial metabolites in samples of expired breath and other fluids. The invention enables estimation, by simple visual inspection and comparison against standards, of the concentration of polyamines and volatile sulfur compounds in the micromolar to millimolar range. | 05-23-2013 |
| 20130224873 | METHOD AND DEVICE FOR THE DETECTION OF SULPHUR CONTAINING SPECIES - A method is provided for detecting sulphur-containing species (such as thiophosphorous esters, in particular phosphorylating agents), in which a suspected sulphur-containing species is brought into contact with a tetrazolium compound in the presence of base, typically at a pH of at least 8. A device, kit and tetrazolium compounds for use in such a method are also disclosed. | 08-29-2013 |
| 20140212983 | THERMAL H2S DETECTION IN DOWNHOLE FLUIDS - An apparatus for detecting a chemical of interest in a fluid or estimating a concentration of the chemical in the fluid includes: a carrier configured to be conveyed through a borehole penetrating an earth formation; a first temperature sensor disposed at the carrier and configured to sense a temperature of the fluid and provide a first temperature output; and a second temperature sensor disposed at the carrier and covered with an exothermic reaction material that experiences an exothermic reaction when exposed to the chemical of interest and configured to sense a temperature and provide a second temperature output. The apparatus further includes a processor coupled to the first temperature sensor and the second temperature sensor and configured to detect the chemical or estimate the concentration using the first temperature output and the second temperature output. | 07-31-2014 |
| 20160084771 | Sensor Unit, Electronic Module as well as Procedure to Calculate the Level of Corrosive Exposure of a Respective Electronic Module - The present invention refers to a sensor unit ( | 03-24-2016 |
| 436120000 | Organic or sulfhydryl containing (e.g., mercaptan, hydrogen, sulfide, etc.) | 13 |
| 20100022018 | RAPID DETECTION OF SULFHYDRYL COMPOUNDS USING A PAPAIN BASED ASSAY - The invention relates to a method for detecting compounds containing a free sulfhydryl group in a sample and a test device which is used to detect such compounds. The method and test device use a papain-based assay where the papain is initially complexed with a metal ion making it inactive. Sulfydryl compounds in a sample activate the papain. Enzymatic activity of papain on a papain substrate releases a dye producing a detectable signal. The test device may be used in detecting compounds containing a free sulfhydryl group in industrial, environmental, experimental and biological samples. | 01-28-2010 |
| 20110014717 | Sensor System and Methods for Chemical Detection - A miniature system encapsulating a chemical transducer (sensor) prepared for a specific chemical, coupled with a miniature radio transmitter that relays information to a handheld receiver on the presence, or absence, of the target chemical. The system is deployed by several means, such as grenade, small rocket, large caliber rifle, drone plane, etc. The deployment device can hold many such sensor devices, each prepared for a particular toxic chemical, such as chlorine, hydrogen sulfide, or phosgene. | 01-20-2011 |
| 20110129939 | PORTABLE ELECTRONIC DEVICE AND METHOD FOR USING THE SAME - A portable electronic device includes at least one function module selected from a group consisting of a wireless communication module, an image capturing module, an audio/video file player module, and an internet module, a halitosis measuring module, and a processor connected to the function module and the halitosis measuring module. The processor controls the function module to work, and detects a level of volatile sulfur compounds (VSCs) in a person's mouth using the halitosis measuring module. | 06-02-2011 |
| 20120276649 | THIOL DETECTION - Embodiments of compounds for selectively detecting a thiol are disclosed. In some embodiments, the compounds are bridged viologens, and the compounds are capable of reacting with homocysteine and/or glutathione in a buffered solution to produce a change in the solution's absorbance spectrum and/or emission spectrum. Also disclosed are embodiments of methods and kits for detecting homocysteine and/or glutathione with the disclosed bridged viologens. | 11-01-2012 |
| 20140377877 | CONCENTRATION MEASUREMENTS WITH A MOBILE DEVICE - A portable electronic device comprises a chemical sensor that is sensitive to a concentration of a chemical analyte and at least two auxiliary sensors that are sensitive to parameters that are different from the concentration of the chemical analyte. The portable electronic device comprises a control device that receives signals from the chemical sensor and from the auxiliary sensors at a plurality of points in time distributed over a measurement period and correlates the time dependencies of these signals to obtain a corrected reading of the first chemical sensor. The portable electronic device may be employed for breath analysis. | 12-25-2014 |
| 20160003769 | DETECTION OF VOLATILE CHEMICALS USING AN RFID SENSING SYSTEM - Methods, systems, and apparatuses, including computer programs encoded on computer-readable media, for monitoring volatile chemicals. A system includes an radio-frequency identification (RFID) tag composed of a patterned metal. The patterned metal is configured to absorb a volatile chemical. The RFID tag includes a non-volatile memory configured to store identification data. The RFID tag also includes a receiver that receives a signal at a frequency in a frequency range. The frequency is based upon an amount of the volatile chemical absorbed in the patterned metal. A transmitter of the RFID tag transmits the identification data in response to receiving the signal. The strength of the transmitted identification data is based upon an amount of the absorbed volatile chemical. | 01-07-2016 |
| 20160131582 | GOLD NANOCLUSTER COMPOSITION AND METHOD FOR PREPARING THE SAME AND METHOD FOR DETECTING THIOL-CONTAINING COMPOUNDS - A gold nanocluster composition and method for preparing the same are provided. The method includes providing a gold ion-containing solution. Next, the method entails mixing the gold ion-containing solution and a reducing agent solution to obtain a first mixture liquid, and heating the first mixture liquid to obtain a second mixture liquid, wherein the second mixture liquid contains the gold nanoclusters, which are partially capped by reducing agent. | 05-12-2016 |
| 20160377636 | MASS SPECTROMETRY ASSAY FOR ESTROGENIC COMPOUNDS - Methods are provided for detecting the amount of one or more HRT panel analytes (i.e., estrone (E1), estrone sulfate (E1s), 17α-estradiol (E2a), 17β-estradiol (E2b), estradiol sulfate (E2s), estriol (E3), equilin (EQ), 17α-dihydroequilin (EQa), 17β-dihydroequilin (EQb), Equilenin (EN), 17α-dihydroequilenin (ENa), 17β-dihydroequilenin (ENb), and Δ8,9-dehydroestrone (dE1)) in a sample by mass spectrometry. The methods generally involve ionizing one or more HRT panel analytes in a sample and quantifying the generated ions to determine the amount of one or more HRT panel analytes in the sample. In methods where amounts of multiple HRT panel analytes are detected, the amounts of multiple analytes are detected in the same sample injection. | 12-29-2016 |
| 436121000 | Only hydrogen sulfide | 5 |
| 20130040397 | DETECTION OF HYDROGEN SULFIDE GAS USING CARBON NANOTUBE-BASED CHEMICAL SENSORS - A method for preparing carbon allotrope based sulfide detectors comprising first functionalizing a carbon allotrope, such as a single-walled carbon nanotubes or graphene, with a solution of a polynuclear aromatic hydrocarbon-sulfonic acid, such as 1-pyrenesulfonic acid, followed by treatment with a metal, such as gold nanowires or cupric salt doped polyaniline, to give a metal-functionalized carbon allotrope, then drop casting the metal-functionalized carbon allotrope onto an inert surface, such as a silicon dioxide film on a silicon wafer having electrodes. Detection of sulfides may be by means such as photochemical or conductance methods. The hydrogen sulfide detectors may be used to detect and/or quantitate ppb and ppm levels of hydrogen sulfide in industrial settings or in detecting halitosis. | 02-14-2013 |
| 20130302904 | Chemosensors for Hydrogen Sulfide - Selective chemosensing agents for hydrogen sulfide are provided. The chemosensing agents can act fast under mild conditions, are chemically stable for long-term storage, are sensitive for detection under near physiological conditions, show a linear concentration-signal relationship within physiologically relevant hydrogen sulfide concentration ranges for easy quantitation, show minimal or no interference by other anions in the blood, and are functional in aqueous solutions and blood plasma. | 11-14-2013 |
| 20140356971 | HYDROGEN SULFIDE GAS DETECTOR WITH HUMIDITY AND TEMPERATURE COMPENSATION - A hydrogen sulfide gas detector is provided. The detector includes a metal oxide semiconductor-based hydrogen sulfide gas sensor having an electrical characteristic that varies with hydrogen sulfide gas concentration. Measurement circuitry is coupled to the metal oxide semiconductor-based hydrogen sulfide gas detector to measure the electrical characteristic. A controller is coupled to the measurement circuitry and is configured to receive an indication of the electrical characteristic of the hydrogen sulfide gas sensor as well as an indication of ambient humidity. The controller is configured to provide a compensated hydrogen sulfide gas concentration output based on the indication of the electrical characteristic of the hydrogen sulfide gas sensor, an indication of ambient temperature, and the indication of ambient humidity. | 12-04-2014 |
| 20150056713 | Measurement of Biologically Labile Hydrogen Sulfide Pools - A method to measure all relevant biologic hydrogen sulfide pools, namely free hydrogen sulfide, acid-labile sulfide, and bound sulfane sulfur, has been developed. This new method involves selective liberation, trapping and derivatization of labile hydrogen sulfide. The total labile sulfide, including the contribution of the bound sulfane sulfur pool, the acid-labile pool, and free H2S, was measured by incubating the sample with a reducing agent, TCEP (Tris(2-carboxyethyl)phosphine hydrochloride), to reduce disulfide bonds in an acid solution. This method was used to measure the three sulfide pools in blood samples from mice and from humans. This method can be used for research, environmental, and clinical diagnostic purposes in determining hydrogen sulfide bioavailability in biological or other samples. | 02-26-2015 |
| 20160041139 | Hydrogen Sulfide Detecting Apparatus - A hydrogen sulfide (H | 02-11-2016 |
| 436122000 | Sulfur dioxide | 6 |
| 20080213913 | COMBUSTION ANALYSIS APPARATUS AND METHOD - A method and apparatus for combustion analysing a sample in a combustion analyzer ( | 09-04-2008 |
| 20100047917 | METHOD FOR ASSAYING SULFUR AND APPARATUS THEREFOR - The present invention relates to a sulfur assaying method comprising converting carbon monoxide in a sample gas generated by combustion of the sample to nitrogen dioxide by a pretreatment, and then measuring the intensity of fluorescence of sulfur dioxide in the sample gas, the pretreatment comprising irradiating the sample gas with light from a low pressure mercury lamp, and also relates to a sulfur assaying apparatus comprising a combustor ( | 02-25-2010 |
| 20110143448 | SO2 DETECTION USING DIFFERENTIAL NANO-RESONATORS AND METHODS RELATED THERETO - A sulfur dioxide sensor comprising a first beam having a functionalized sensing surface capable of sensing sulfur dioxide, the first beam capable of producing a first resonant frequency; and a second beam having a functionalized reference surface not capable of sensing sulfur dioxide, the second beam capable of producing a second resonant frequency, wherein differential sensing of sulfur dioxide may be performed, further wherein the first beam is functionalized with a liquid phase of a first polymeric compound and the second beam is functionalized with a liquid phase of a second polymeric compound is provided. In one embodiment, the sensor is a nano-sensor capable of low drift accurately detecting sulfur dioxide levels at the zeptograms level. Methods of making and using a sulfur dioxide sensor are also provided. | 06-16-2011 |
| 20110177607 | Method for assaying sulfur and apparatus therefor - The present invention relates to a sulfur assaying method comprising converting carbon monoxide in a sample gas generated by combustion of the sample to nitrogen dioxide by a pretreatment, and then measuring the intensity of fluorescence of sulfur dioxide in the sample gas, the pretreatment comprising irradiating the sample gas with light from a low pressure mercury lamp, and also relates to a sulfur assaying apparatus comprising a combustor ( | 07-21-2011 |
| 20110263034 | METHOD AND DEVICE FOR FAST SULFUR CHARACTERIZATION AND QUANTIFICATION IN SEDIMENTARY ROCKS AND PETROLEUM PRODUCTS - The invention relates to a method and to a device for sulfur characterization and quantification in a sample of sedimentary rocks or of petroleum products wherein the following stages are carried out: heating said sample in a pyrolysis oven ( | 10-27-2011 |
| 20140193922 | Method for Combustion Analysis of Samples in a Combustion Analyzer - A method for combustion analysing a sample in a combustion analyzer ( | 07-10-2014 |
| 436123000 | Total or elemental sulfur | 6 |
| 20110236985 | Early Warning Sulfur Detection Based on Change in Fluorescence Intensity of Polymer-Bound Phosphine Compound - An early warning sulfur detection system for detecting the presence of corrosive gases, especially elemental sulfur (S | 09-29-2011 |
| 20120214247 | Early Warning Sulfur Detection Based on Change in Fluorescence Intensity of Polymer-Bound Phosphine Compound - An early warning sulfur detection system for detecting the presence of corrosive gases, especially elemental sulfur (S | 08-23-2012 |
| 20130149788 | ASSAY FOR QUANTIFYING ELEMENTAL SULFUR LEVELS IN A SAMPLE - The present invention relates to a method for quantifying elemental sulfur levels in a test sample. This method involves the steps of: (i) providing a test sample having an unknown amount of elemental sulfur; (ii) converting the elemental sulfur contained in the test sample into volatilized hydrogen sulfide using benign reagents and without prior need to purify the elemental sulfur in the test sample by extraction or other purification processes; and (iii) determining the amount of volatilized hydrogen sulfide from the test sample in order to quantify the amount of elemental sulfur contained in the test sample. The present invention also relates to kits, systems, and assays for quantifying elemental sulfur levels in a test sample. | 06-13-2013 |
| 20130196445 | METHOD AND DEVICE FOR ANALYZING SULFUR IN METAL SAMPLE - An analyzing method which enables highly precise and rapid quantitative analysis of sulfur contained in a metal sample, includes: combusting a metal sample containing a sulfur component under pure oxygen gas atmosphere to oxidize the sulfur component into sulfur dioxide; and quantitatively analyzing sulfur in the metal sample through analysis, according to a UV fluorescence method, of a sulfur dioxide containing gas containing the sulfur dioxide generated by combustion of the metal sample. | 08-01-2013 |
| 20140024129 | Systems and Methods for Measuring Total Sulfur Content in a Fluid Stream - A system for determining the content of sulfur in a first fluid mixture includes a gas chromatograph including a sample valve, a first column coupled to the sample valve, and a second column coupled to the sample valve. In addition, the system includes a pyrolizer configured to subject the first fluid mixture to pyrolysis to produce a second fluid mixture that includes hydrogen sulfide. The first column is configured to separate at least a first constituent of the second fluid mixture from the hydrogen sulfide in the second fluid mixture and output a third fluid mixture including the hydrogen sulfide. The second column is configured to separate at least a second constituent in the third fluid mixture from the hydrogen sulfide in the third fluid mixture and output a fourth fluid mixture including the hydrogen sulfide. Further, the system includes a detector in fluid communication with the second column. | 01-23-2014 |
| 20150087075 | SULPHUR DETECTION METHOD AND KIT - Method of detecting the presence of sulphur in a construction material such as asphalt or concrete comprising the steps of:·(a) adding a quantity of the construction material to a solvent to form a test solution, wherein the solvent is capable of solubilising all or part of any sulphur which is present in the construction material and wherein the solvent is miscible with an aqueous solution; and·(b) detecting the presence of sulphur in the test solution by (i) adding to the solution a reagent which induces part or all of any sulphur present in the test solution to precipitate and (ii) measuring the turbidity of the test solution after the precipitation has been formed. The present invention further relates to a sulphur detection kit for detecting the presence of sulphur in construction materials such as asphalt or concrete. | 03-26-2015 |
