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| Number | Title | Issue Date |
| 7390670 | Signalling compounds and methods for detecting hydrogen peroxide Methods and compound useful for detecting a source of hydrogen peroxide are disclosed wherein a signalling compound of the formula: is reacted with peroxide. Sig is a non-polymeric organic group, B is a boron atom, and each... | 06/24/2008 |
| 7378255 | Fluorimetric determination of analytes by an intramolecular quencher-fluorophore conjugate A method and reagent for detecting an analyte by a redox reaction and a fluorimetric determination, is disclosed. The method comprises contacting a sample containing the analyte with a detection reagent which contains a compound of the general formula Q-F as a fluor... | 05/27/2008 |
| 7338634 | Quantitative fecal examination apparatus A quantitative fecal examination apparatus includes a fecal collector removably mounted on a container base, having the fecal collector provided with a suction portion for sucking a fecal specimen into the collector and then the fecal specimen is disposed into the c... | 03/04/2008 |
| 7332354 | Compounds for chemiluminescense procedures The present invention relates to a chemical compound comprising a light emitting moiety precursor and a precursor of a leaving group, bound to each other by an amide or by an ester bond and characterized in that the leaving group precursor upon oxidation is converte... | 02/19/2008 |
| 7091051 | Chemiluminescence method of 1,2-dioxetane and composition for chemiluminescence A chemiluminescence method characterized in that when a 1,2-dioxetane derivative of the formula 1: wherein each of R1, R2, R3, R4 and R5 which are independen... | 08/15/2006 |
| 6841060 | Method for quantifying antioxidant levels in food and medical specimens A simple analytical method for determining antioxidant level in food product and body fluids such as urine is based on reduction of elemental iodine. The method adds an aqueous solution of iodine and an iodophor to the sample to be tested. Polyvinylpyrrolidone is a ... | 01/11/2005 |
| 6790665 | Method of quantifying hemoglobin and method of measuring glycation ratio of hemoglobin A method of determining Hb is provided, by which an amount of Hb can be determined easily and accurately without fear of damage to the environment. Hemoglobin in a sample is denatured with a tetrazolium compound to give denatured hemoglobin, and an amount of an opti... | 09/14/2004 |
| 6703245 | Oxygen detecting composition The oxygen detecting composition of the present invention includes a layered silicate, a cationic surfactant, an organic colorant, a reducing agent, and optionally a basic substance. The oxygen detecting composition is suitable for indicating the presence... | 03/09/2004 |
| 6555116 | Alleviation of the allergenic potential of airborne and contact allergens by thioredoxin Thioredoxin, a small dithiol protein, is a specific reductant for allergenic proteins and particularly allergenic proteins present in pollen and animal and plant sources. All targeted proteins contain disulfide (S--S) bonds that are reduced to the sulfhyd... | 04/29/2003 |
| 6492179 | Test for rapid evaluation of ischemic states and kit The present invention relates to a rapid method for the detection of ischemic states and to a kit for use in such a method. Provided for is a rapid method of testing for the existence of and quantifying ischemia based upon method of detecting and quantify... | 12/10/2002 |
| 6475743 | Marker useful for detection and measurement of free radical damage and method The present invention teaches a marker useful for detection and measurement of free radical damage. Specifically, the invention takes advantage of alterations which occur to the N-terminus of the albumin molecule, a circulating protein in human blood, in ... | 11/05/2002 |
| 6410336 | Method reagent and kit for the detection of fecal occult blood A fecal specimen may be tested for the presence of occult blood by combining the fecal specimen with (a) an oxidizable substrate that produces a colored product in the presence of peroxide and hemoglobin; (b) hydrogen peroxide or a peroxide source; and (c) an ... | 06/25/2002 |
| 6387614 | Methods for using redox liposome biosensors The present invention provides methods and compositions for detecting the presence of biologically-important analytes by using redox liposome biosensors. In particular, the present invention provides liposome/sol-gel electrodes suitable for the detection ... | 05/14/2002 |
| 6255117 | Method and device for determining monopersulfate A test method and device are described for quantitatively determining the presence and concentration of monopersulfate ion in aqueous solution. Contacting the aqueous solution containing monopersulfate ion with a test strip in accordance with the inventio... | 07/03/2001 |
| 6210971 | Assay for the detection of creatinine Disclosed is an improved method for the detection of creatinine in a fluid test sample by contacting the test sample with cupric ions, a hydroperoxide, citrate and an oxidizable dye which gives a colored response in the presence of oxygen free radicals an... | 04/03/2001 |
| 6080385 | Oxidative metabolism in smooth muscle cells: methods and materials relating thereto Disclosed are methods for measuring non-contractile oxidative metabolism in smooth muscle cells comprising providing a medium suitable for the support of oxidative metabolism, incubating a cell or tissue sample with a specimen from a patient, measuring a ... | 06/27/2000 |
| 6001656 | Method for the detection of creatinine Disclosed is an improvement to the assay for creatinine in fluid test samples by contacting the test sample with a reagent formulation containing cupric ions, a hydroperoxide and an oxidizable dye. The improvement involves the inclusion of one or more sel... | 12/14/1999 |
| 5976884 | Methods for quantifying photoreactions in light activated materials Systems and methods treat biological fluids carrying contaminants by photoactivating materials mixed with the fluids. The systems and methods quantify the photoreactions that occur in a manner that permits correlation with clinical results.... | 11/02/1999 |
| 5955379 | Biosensor device and method A biosensor apparatus for detecting a binding event between a ligand and receptor. The apparatus includes an electrode substrate coated with a high-dielectric hydrocarbon-chain monolayer, and having ligands attached to the exposed monolayer surface. Bindi... | 09/21/1999 |
| 5866074 | Systems for quantifying the illumination characteristics of vessels such as blood processing containers with respect to light energy A vessel holds a liquid content for exposure to prescribed light energy. The vessel has a region transparent to the prescribed light energy. The liquid content of the vessel includes a solution comprising a material undergoing reduction oxidation as a res... | 02/02/1999 |
| 5776780 | Method for quantitatively measuring white blood cells esterase activity in urine Detecting white blood cells in an aliquot of urine by placing the aliquot of urine in an automated analyzer sampling cup, transferring the urine to a cuvette and injecting at least one reagent composition. The reagent composition contains a buffer, an act... | 07/07/1998 |
| 5753453 | Stable single liquid reagent for the determination of carbon dioxide in serum A stable single reagent for the determination of carbon dioxide in serum is provided as an aqueous solution of diagnostically amounts and NADH and/or NADPH, and a stabilizing system therefore reactively stabilized PEPC and a substrate for reacting with bi... | 05/19/1998 |
| 5753455 | Method for the detection of lysozyme using a protein error indicator dye in conjunction with an alkane sulfonic acid The determination of lysozyme in urine is carried out by contacting the urine with a reagent system containing a buffer and a protein error indicator dye. Other proteins normally found in urine can compete with the lysozyme for interaction with the protei... | 05/19/1998 |
| 5733787 | Method for the detection of creatinine Disclosed is a method for the determination of creatinine in urine which involves contacting a urine test sample with a reagent system containing Cu+2, a hydroperoxide and an oxidizible dye which provides a detectable response when oxidized in ... | 03/31/1998 |
| 5733785 | Automated urinalysis method for detecting blood in urine Detecting red blood cells in a patient's urine by placing an aliquot of the urine in an automated analyzer sampling cup. The urine is transferred to a cuvette mounted within the automated analyzer and one or more reagent compositions in an aqueous medium ... | 03/31/1998 |
| 5710012 | Salt of 6-carboxy-3-methylbenzothiazolone hydrazone hydrate in colorimetric determination of hydrogen peroxide Water soluble salts of hydrazone compounds react quickly with aniline compounds in the presence of a peroxidase and hydrogen peroxide to provide a color which can be measured spectrophotometrically or visually, either in solution or when incorporated in a... | 01/20/1998 |
| 5654164 | Method and device for reducing oxygen with a reduced oxidase with color formation A method and device for removing oxygen using a reduced oxidase enzyme and for providing a colorimetrically detectable signal of the presence of the oxygen is disclosed. A reduced laccase or ascorbate oxidase is preferably provided with a substrate which ... | 08/05/1997 |
| 5583047 | Method of detecting the permeability of an object to oxygen A method of detecting the permeability of an article to oxygen is disclosed. A fluorescent redox indicator, preferably riboflavin, is dispersed in a carrier and placed on an impermeable substrate. The article to be measured is placed adjacent to the carri... | 12/10/1996 |
| 5571723 | Method of testing for diabetes that reduces the effect of interfering substances An improved method of testing individuals for diabetes, even if they have levels of interfering substances (e.g., uric acid, bilirubin, and glutathione) that would otherwise interfere with such testing, is disclosed. The individual's protein-bound glucose... | 11/05/1996 |
| 5563071 | Method, reagent and kit for the detection of fecal occult blood A fecal specimen may be tested for the presence of occult blood by combining the fecal specimen with (a) an oxidizable substrate that produces a colored product in the presence of peroxide and hemoglobin; (b) hydrogen peroxide or a peroxide source; and (c) an ... | 10/08/1996 |
| 5556788 | Fructosmaine reagent and calibrator system A system for determining the concentration of fructosamine in sera which consists of a first reagent in which a tetrazolium salt which reduces all reactive substances in sera including fructosamine and a second reagent which is responsive to all reactive ... | 09/17/1996 |
| 5518891 | Dye forming composition and detection of hydrogen peroxide therewith A color-forming coupler is provided which can be used in test compositions, as well as methods and apparatus for detection of hydrogen peroxide. The color-forming coupler compounds react with a hydrazone or an aminoantypyrine in the presence of peroxidase... | 05/21/1996 |
| 5510245 | Composition and method of assaying for ketone bodies A composition, test device and method of determining the presence or concentration of ketone bodies, and specifically D-ଲ-hydroxybutyrate, in a test sample are disclosed. The test device includes a test pad comprising a suitable carrier matrix incor... | 04/23/1996 |
| 5498547 | Method and device for the determination of polymeric biguanides in aqueous fluids A test method and device is described for determining biguanides in aqueous fluids such as swimming pool water which involve contacting the fluid with a matrix incorporating a pH sensitive indicator material which exhibits the biguanide error effect. A bu... | 03/12/1996 |
| 5491094 | Test strip for free chlorine analysis A colorimetric test strip useful for analysis of free chlorine is provided. In a preferred embodiment, 3,3',5,5'-tetramethylbenzidine is the colorimetric indicator. Beneficially, the carrier for the indicator has been treated to have a pH that eliminates ... | 02/13/1996 |
| 5451526 | Determination of oxidant or reductant concentration by the spectrophotometric or visual response in oxidation or reduction of polyaniline The present invention is directed to a method for determining the presence of an oxidant or reductant in a sample by contacting the sample with a thin film of polyaniline in the reduced state or oxidized state, respectively, and measuring the color change... | 09/19/1995 |
| 5447868 | Method, reagent and kit for the detection of fecal occult blood A fecal specimen may be tested for the presence of occult blood combining the fecal specimen with (a) an oxidizable substrate that produces a colored product in the presence of peroxide and hemoglobin; (b) hydrogen peroxide or a peroxide source; and (c) an enh... | 09/05/1995 |
| 5443961 | Method for diagnosing cellular aging or inflammation condition of keratinocytes, and kit for implementing such method Method for diagnosing a cellular aging or inflammation condition of keratinocytes of the skin or a pilous follicle in a person, or for diagnosing the efficiency of a treatment intended to combat said condition. To this effect, the concentration or activit... | 08/22/1995 |
| 5424211 | Composition for detecting uranyl A composition for detecting the presence and concentration of a substance such as uranyl, comprising an organohalide covalently bonded to an indicator for said substance. The composition has at least one active OH site for forming a complex with the subst... | 06/13/1995 |
| 5415809 | Method for determination of dissolved oxygen in water A method for determining the concentration of dissolved oxygen in a water sample comprising the steps: (a) providing a water sample of predetermined volume, the oxygen content of which is to be determined; (b) mixing additives with the water sample to form a m... | 05/16/1995 |
