Class / Patent application number | Description | Number of patent applications / Date published |
436124000 | HALOGEN CONTAINING | 36 |
20080274560 | REAGENTS FOR DETECTION OF HYPOCHLOROUS ACID - Provided herein are compounds or hypochlorous acid probes which can be used as reagents for measuring, detecting and/or screening, directly or indirectly, hypochlorous acid or hypochlorite. Provided also herein are methods that can be used to measure, directly or indirectly, the amount of hypochlorous acid or hypochlorite in chemical samples and biological samples such as cells and tissues in living organisms. Specifically, the methods include the steps of contacting the hypochlorous acid probes disclosed herein with the samples to form one or more fluorescent compounds, and measuring fluorescence properties of the fluorescent compounds. Provided also herein are high-throughput screening fluorescent methods for detecting or screening hypochlorous acid or compounds that can increase or decrease, directly or indirectly, the level of hypochlorous acid or hypochlorite in chemical and biological samples. | 11-06-2008 |
20090017548 | Method for Determining the Effectiveness of Stabilized Chlorine Dioxide in a Mouth Rinse - A method for determining the available treatment dosage of stabilized chlorine dioxide in the prevention and the treatment of plaque accumulation, volatile sulfur compound production, gingivitis and periodontitis, and for differentiating the treatment dosage from other chlorine-containing compounds that may not have such beneficial effects is disclosed. When in solution as stabilized chlorine dioxide, the presence of other ions such as chlorate and chloride may not only obscure results as to the concentration of stabilized ClO | 01-15-2009 |
20090317914 | FLUORESCENT PROBE - A compound represented by the following general formula (I): | 12-24-2009 |
20100136703 | Thyroxine-Containing Compound Analysis Methods - The present teachings provide methods for analyzing one or more thyroxine compounds in one or more samples using isobaric labels and parent-daughter ion transition monitoring (PDITM). In various embodiments, the methods comprise the steps of: (a) labeling one or more thyroxine compounds with different isobaric tags from a set of isobaric tags, each isobaric tag comprising a reporter ion portion; (b) combining at least a portion of each of the isobarically labeled thyroxine compounds to produce a combined sample; (c) subjecting at least a portion of the combined sample to PDITM; (d) measuring the ion signal of one or more of the transmitted reporter ions; and (e) determining the concentration of one or more of the isobarically labeled thyroxine compounds based at least on a comparison of the measured ion signal of the corresponding reporter ion to one or more measured ion signals of a standard compound. | 06-03-2010 |
20100136704 | Process for Detecting Gaseous Halogenated Compounds - Process for detecting a gaseous compound of BX | 06-03-2010 |
20110033944 | METHOD FOR MEASURING HYPOCHLORITE ION - A method for measuring hypochlorite ion, which comprises the steps of: | 02-10-2011 |
20110171743 | DETECTION OF HALOGENS - 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, comprising the step of passing a gaseous conversion compound to the halogen containing gas stream to convert the halogen to a detectable gaseous compound. | 07-14-2011 |
20110244586 | Method for Potentiometric Analysis of Fluoride in Biological Material - The present invention concerns a method for potentiometric analysis of fluoride in biological material, where the biological material is wet extracted and analysed for fluoride content in the same beaker, and where the sample is dissolved in an acid at pH lower than 2. Further, the invention concerns use of the method of analysis of fluorides in aluminium industry and glass-works. | 10-06-2011 |
20120214248 | Method of preparing, storing, transporting and testing chlorine dioxide solutions - A method for determining the concentration of chlorine dioxide in a chlorine dioxide solution having the following steps: | 08-23-2012 |
20130337572 | METHOD AND APPARATUS FOR MEASURING BROMATE ION - 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. | 12-19-2013 |
20130344608 | VISUAL DETECTION OF FLUORIDE IONS - 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. | 12-26-2013 |
20140315321 | Chloride Ion Fluorescence Detection Method and Device, and Use Thereof - 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. | 10-23-2014 |
20150369713 | METHOD OF ENTRAPPING CHLORINE DIOXIDE GAS, METHOD OF DETERMINING CONCENTRATION OF CHLORINE DIOXIDE AND ENTRAPPING AGENT FOR CHLORINE DIOXIDE - A method of entrapping chlorine dioxide gas, including the steps of using an aqueous solution containing an alkaline substance and an iodide and bringing air containing the chlorine dioxide gas into contact with the aqueous solution. | 12-24-2015 |
20150377789 | REFLECTOMETRY APPARATUS AND METHOD - The present invention is directed to a reflectometer-based apparatus and method for colorimetric analysis. Advantageously, the present invention includes use of a test strip provided with an aperture over which a translucent colorimetric, indicator-bearing matrix is affixed. In addition, the present invention beneficially includes a test strip holder that includes a test strip-holding channel provided with a white background. | 12-31-2015 |
20160161379 | IN SITU CHEMICAL TRANSFORMATION AND IONIZATION OF INORGANIC PERCHLORATES ON SURFACES - A method for providing in situ chemical transformation and ionization of a portion (e.g., inorganic oxidizer) of a sample via an analyte detection system is disclosed herein. The method includes introducing a gas into an ionization source of the analyte detection system via an inlet. The method further includes generating ions within the ionization source and directing the gas and generated ions through and out of the ionization source and to the sample. The sample is located proximal to the ionization source in an ambient environment. The ions chemically react with the sample and desorb and ionize an analyte from the sample, the analyte being generated from the inorganic oxidizer, the desorbed analyte having a lower melting point and/or better desorption kinetics than the inorganic oxidizer. The method further includes receiving the desorbed analyte via an analyzer of the analyte detection system. | 06-09-2016 |
20160377583 | CHLORINE-CONCENTRATION-MEASURING COMPOSITION - An object of the present technology is to provide a chlorine-concentration-measuring composition that can reduce staining by reagents, a measurement method using the chlorine-concentration-measuring composition and a method for reducing staining by chlorine-concentration-measuring composition using an aromatic sulfonic acid-based polymer or the salt thereof. | 12-29-2016 |
436125000 | In aqueous solution | 15 |
20090017549 | Apparatus and Method for Determining The Concentration of Iodine-Containing Organic Compounds in an Aqueous Solution - A method for determining the amount of a known iodine-containing organic compound in an aqueous solution. The method comprises electrochemically reducing the known iodine-containing organic compound in an aqueous medium to release iodide anions, chemically oxidizing the iodide anions to produce molecular iodine, and measuring the amount of molecular iodine. The known iodine-containing organic compound is preferably an aryl iodide, such as Iothalamate. Other preferred iodine-containing organic compounds include various glomerular filtration rate (GFR) marker compounds in plasma or urine samples, as useful in the measurement of GFR for an animal. The electrochemical reduction of the known iodine-containing organic compound is preferably performed in an electrochemical cell including a working electrode separated from a counter electrode by a cation exchange membrane. The working electrode most preferably includes bismuth and the counter electrode most preferably includes platinum. | 01-15-2009 |
20110217788 | CHEMICAL REAGENT FOR MEASURING THE LEVEL OF HALOGEN AGENTS, IN PARTICULAR IN SWIMMING-POOL WATER AND ASSOCIATED MEASUREMENT METHOD - 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. | 09-08-2011 |
20120064634 | Chromium-Free Indicating Device for Chloride Detection - A chemical indicating device ( | 03-15-2012 |
20120107945 | CHEMICAL REAGENT FOR MEASURING THE LEVEL OF HALOGEN AGENTS, IN PARTICULAR IN SWIMMING-POOL WATER AND ASSOCIATED MEASUREMENT METHOD - The present invention relates to a chemical reagent for measuring the halogen-agent content, in particular in swimming pool water, and also to an associated measurement method, and such that the chemical reagent, according to the invention, comprises a polysaccharide, an acid stabilizer compound, potassium iodide, a dye, and distilled water. | 05-03-2012 |
20120288954 | Chromium-Free Indicating Device - A chemical indicating device ( | 11-15-2012 |
20130029427 | Methods and Apparatus for Determination of Halohydrocarbons - A real-time, on-line method and analytical system for determining halohydrocarbons in water which operate by (1) extracting on-line samples; (2) purging volatile halohydrocarbons from the water (e.g., with air or nitrogen); (3) carrying the purge gas containing the analytes of interest over a porous surface where the analytes are adsorbed; (4) recovering the analytes from the porous surface with heat (thermal desorption) or solvent (solvent elution) to drive the analytes into an organic chemical mixture; (5) generating an optical change (e.g., color change) in dependence upon a reaction involving the analytes and a pyridine derivative; and (6) measuring optical characteristics associated with the reaction to quantify the volatile halogenated hydrocarbon concentration. | 01-31-2013 |
20130337573 | METHOD FOR EVALUATING CHEMICAL STABILITY OF POLYCHLOROPRENE LATEX - Provided is a method for evaluating of the chemical stability of a polychloroprene latex that permits evaluation of the chemical stability of polychloroprene at high accuracy. | 12-19-2013 |
20140087476 | OPTICAL SENSOR FOR BROMIDE ION - Methods and systems to determine a concentration of bromide ions in an aqueous sample are disclosed. The method involves the oxidation of bromide ions to bromine, followed by bromination of a colored or fluorescent reporter compound which may be detected by spectrophotometric means. The relative change in color or fluorescence upon bromine binding to the reporter compound may then be used to determine a quantitative concentration of bromide ions in the sample. The system utilizes a photocatalytic coating in a sample chamber, a source of reporter compound in fluid communication with the sample chamber, light sources that may activate the photocatalyst and excite the reporter compound, an optical detection unit capable of receiving a light signal from the second light source after it has passed through the sample chamber, and various pumps, valves or injection syringes that regulate the flow of sample and reporter compound into and out of the sample chamber. | 03-27-2014 |
20140099727 | Method and apparatus for determination of haloacetic acid ("HAA") presence in aqueous solution - Techniques related to printing using a metal-surface charging element. A printing system includes a metal-surface charging element and a power supply. The charging element is disposed to deposit electric charge on an imaging surface. The power supply may provide electric power with an alternating current (AC) component and a direct current (DC) component to the charging element. | 04-10-2014 |
20140295568 | REAGENT FOR DETECTION AND ASSESSMENT OF TOTAL CHLORINE IN AQUEOUS SOLUTION - 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. | 10-02-2014 |
20140295569 | REAGENT FOR DETECTION AND ASSESSMENT OF FREE CHLORINE IN AQUEOUS SOLUTION - 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. | 10-02-2014 |
20140342461 | WATER CHEMISTRY TEST KIT APPARATUS AND RELATED METHODS - Methods and apparatus are disclosed for an improved water chemistry test. Features disclosed include, without limitation, a test block, colored liquid reagents, and color comparison displays, with test chambers/vials that are generally horizontal. The mouth at the top of each vial is formed along a substantial portion of the vial's horizontal length. The vial's horizontal dimensions enable water to move throughout each vial so that a wave or waves roll from one side of the vial to the other and quickly/thoroughly mixes colored liquid reagents with sample water. At least one ridge, wall, semipermeable barrier, etc. within the vial causes water and chemical reagents to more quickly and thoroughly when the test block is agitated. At least one drain hole is positioned in a wall/side of each vial, with its bottom edge located at the fill level necessary to conduct the water sample. A valve or valves enables a user to easily drain sample water from the vial down to the proper test level. An additional element at or near the top of at least one side of each vial serves to deflect the wave(s) of water and prevent them from splashing out of the vial through the vial's mouth. Adjacent to each vial is a color comparison display. The test block base allows it to be freestanding. | 11-20-2014 |
20150355153 | PHENYLACETYLENES - A compound, or a protonate or salt thereof, having the formula of: | 12-10-2015 |
20160123889 | Methods and Apparatus for Determination of Halohydrocarbons - A real-time, on-line method and analytical system for determining halohydrocarbons in water which operate by (1) extracting on-line samples; (2) purging volatile halohydrocarbons from the water (e.g., with air or nitrogen); (3) carrying the purge gas containing the analytes of interest over a porous surface where the analytes are adsorbed; (4) recovering the analytes from the porous surface with heat (thermal desorption) or solvent (solvent elution) to drive the analytes into an organic chemical mixture; (5) generating an optical change (e.g., color change) in dependence upon a reaction involving the analytes and a pyridine derivative; and (6) measuring optical characteristics associated with the reaction to quantify the volatile halogenated hydrocarbon concentration. | 05-05-2016 |
20160169847 | Techniques for determination of haloacetic acid ("HAA") presence in aqueous solution | 06-16-2016 |
436126000 | Carbon containing compound (e.g., vinylchloride, etc.) | 5 |
20090263910 | METHOD FOR MEASURING HYPOCHLORITE ION - A method for measuring hypochlorite ion, which comprises the steps of: | 10-22-2009 |
20130230929 | AGENT FOR DETECTING HALIDE, METHOD FOR DETECTING HALIDE, AND DETECTION SENSOR - [Problems to be solved by the invention] | 09-05-2013 |
20150293070 | ON-SITE KIT FOR ANALYSIS OF DISINFECTANT BYPRODUCTS SPECIES AND AMOUNTS THEREOF IN DRINKING WATER SUPPLIES - The present invention relates to the provision of a portable kit that permits reliable and quantifiable analysis of trihaloamethanes and haloacetic acids within drinking water samples utilizing a hand-held (portable) fluorescing detection instrument for simultaneous measurements of such species. With the necessity to chlorinate drinking water to remove harmful bacteria and other potential toxins, trihalomethane and haloacetic acid byproducts are generated during such a disinfecting procedure that may harm humans after consumption as well due to highly suspect carcinogenicity. A reliable manner of measuring such drinking water supplies for such disinfectant byproduct levels is highly desirable, particularly through the utilization of a relatively inexpensive analytical instrument for such a purpose. The inventive kit-based analytical method of the invention has been found to be nearly as reliable as source measuring methods for the same purpose, providing a relatively quick measuring method that may be undertaken at any drinking water source location. | 10-15-2015 |
20180024105 | SYSTEMS AND METHODS FOR NON-FLAMMABLE INDICATION OF INCENDIVITY | 01-25-2018 |
20190145876 | PROCESS FOR MICROEXTRACTION AND DETECTION OF AN ANALYTE | 05-16-2019 |