| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 436111000 |
Amine and quaternary ammonium
| 40 |
| 436110000 |
Nitrite or nitrate
| 25 |
| 436116000 |
Oxides of nitrogen
| 21 |
| 436109000 |
Cyanide or isocyanide
| 14 |
| 436114000 |
Total nitrogen determined | 3 |
| 20080220533 | Measuring Method for Total Organic Carbon, Measuring Method for Total Nitrogen and Measuring Apparatus for the Methods - Disclosed herein is a method for measuring total organic carbon without the influence of nitrogen components. The method for measuring total organic carbon includes the steps of: (1) adjusting the hydrogen ion concentration of sample water to between pH 4 and pH 6; (2) decomposing organic matter and nitrogen compounds contained in the sample water into carbon dioxide and nitrous acid, respectively, through oxidation and; (3) making the carbon dioxide permeate into measuring water via a gas-permeable part | 09-11-2008 |
| 20090011516 | Methods and Assays for the Detection of Nitrogen Uptake by a Plant and Uses Thereof - The invention provides a rapid and efficient method and assay for monitoring nitrogen uptake by a plant using a pH indicator. The plant is exposed to medium comprising one or more sources of nitrogen, such as nitrate or ammonia, and a pH indicator. The plant is exposed to the source of nitrogen for a time sufficient for it to be taken up by the plant. As nitrate is taken up from the medium, the medium becomes more basic, that is the pH increases. Conversely, as ammonia is taken up from the medium, the medium becomes more acidic and the pH decreases. The change in the pH of the medium may be optically detected and correlated to the amount of nitrate or ammonia remaining in the medium. Accordingly, the amount of nitrate or ammonia taken up by the plant or remaining in the medium may be determined. | 01-08-2009 |
| 20100178706 | METHOD FOR MONITORING CONCENTRATION OF WATER BORNE SUBSTANCE IN AN AQUEOUS MEDIUM - A method for monitoring the concentration of water borne substances in an aqueous medium, by introducing a defined amount of the aqueous medium into a gas circulatory system of an analytical apparatus which extends through a high temperature reaction chamber and a measuring chamber. The introducing of the aqueous medium occurs upstream of the high temperature reaction chamber or into it. The aqueous medium is evaporated in the high temperature reaction chamber, the water borne substance with at least one reaction partner in the high temperature reaction chamber reacts to a gaseous reaction product, and a current value of a measured variable is registered, which is a function of the concentration of the chemical species of the reaction product in the gas circulatory system. The concentration of the chemical species of the reaction product in the gas circulatory system depends, on the one hand, on a time-dependent state of the gas circulatory system and, on the other hand, on the concentration of the substance in the aqueous medium; ascertaining the concentration of the substance in the aqueous medium by applying the current value of the measured variable,wherein, in the ascertaining of the concentration of the substance in the aqueous medium, the contribution to the concentration of the chemical species of the reaction product in the gas circulatory system by the state of the gas circulatory system is ascertained on the basis of a model of the state, and a correction of the concentration of the chemical species of the reaction product in the gas circulatory system occurs on the basis of this contribution. | 07-15-2010 |
| 436108000 |
Urea or blood urea nitrogen | 3 |
| 20080280371 | Acoustic resonance based urea quality sensor - A urea quality sensor includes an acoustic resonator in order to measure the accurate concentration of urea by measuring change in molecular weight. A change in molecular weight of urea proportionately affects the speed of sound. The change in the composition of the urea solution manifests itself as a change in frequency. The concentration of the urea solution can be determined based on the frequency data obtained as a result of the frequency measurement utilizing the acoustic wave sensor. The urea quality sensor can be used with an NH | 11-13-2008 |
| 20140154814 | UREA SOLUTION QUALITY DETERMINING SYSTEM - A urea solution quality determining system may include a urea tank in which a urea solution is filled through a charging hole, a test chamber positioned below the charging hole for holding a portion of the urea solution, a main line connected to the urea tank at a lower part of the urea tank below the test chamber, a test line connected to the test chamber, a pumping line to which the main line and the test line are joined, a pump in the pumping line to pump the urea solution from the test chamber or from the urea tank, a control valve for selectively connecting the main line or the test line to the pumping line, and an injector at an end of the pumping line to inject the urea solution into an exhaust line through which an exhaust gas flows. A method is also described. | 06-05-2014 |
| 20160169852 | TECHNIQUES FOR ACTIVE PASSIVATION | 06-16-2016 |
| 436107000 |
N-Nitroso containing (e.g., nitrosamine, etc.) | 2 |
| 20140127824 | REAGENT METHOD AND KIT FOR THE DETECTION OF NITRO ALIPHATIC COMPOUNDS - 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. | 05-08-2014 |
| 20140212982 | METHODS OF SELECTIVELY DETECTING THE PRESENCE OF A COMPOUND IN A GASEOUS MEDIUM - Methods of selectively detecting the presence of at least one compound in a gaseous medium. A silicon substrate can be exposed to the gaseous medium under conditions to adsorb the at least one compound to the silicon substrate to form a modified silicon substrate. The modified silicon substrate can be analyzed to determine if the at least one compound was present in the gaseous medium. The step of analyzing can include using X-ray spectroscopy. | 07-31-2014 |
| Entries |
| Document | Title | Date |
|---|
| 20080318332 | DISEASE DIAGNOSIS BY PROFILING SERUM GLYCANS - Specific glycomic profiles derived from human blood sera of breast cancer patients and prostate cancer patients were compared to those of disease-free females and males, respectively. The profiles were acquired using MALDI-MS of permethylated N-glycans released from 10-μl sample aliquots. Quantitative permethylation was attained using solid-phase permethylation. Principal component analysis of the glycomic profiles revealed significant differences among the two sets (diseased vs. non-diseased), allowing their distinct clustering. Several sialylated and fucosylated N-glycan structures were found to be useful as biomarkers for cancer, particularly breast cancer or prostate cancer. | 12-25-2008 |
| 20090233374 | Flourescent organic nanofibrils as sensory materials for explosives detection - The present invention relates to a class of fluorescent, organic nanofibrils, and particularly the films comprising entangled piling of these nanofibrils exhibiting effective quenching of their fluorescence upon exposure the vapor of explosives. The invention also relates to a sensor and a method for sensing the explosives vapor and other volatile organic compounds, including the explosives taggants through the modulation of the fluorescence of the nanofibril film and the electrical conductivity of the nanofibrils. The invention also relates to a development of synthetic methods, protocols and techniques that leads to production of various arylene-ethynylene macrocycle (AEM) molecules, which consist of a shape-persistent, toroidal scaffold in planar conformation, with minimal ring strain and highly tunable ring sizes (from 0.5 nm to above 10 nm). The invention also relates to an approach to optimization of the one-dimensional molecular arrangement along the long axis of the nanofibril, which provides increased exciton (excited state) migration (via cofacial intermolecular electronic coupling) and charge transport (via pi-electronic delocalization). A combination of long-range exciton migration and efficient charge transport makes the nanofibrils ideal as sensory materials for detecting explosives and other volatile organic compounds through both optical and electrical sensing mechanisms. | 09-17-2009 |
| 20090246880 | Method for preventing degradation of diacetylpolyamine - The present invention provides a method for preventing degradation of diacetylpolyamine in a solution containing diacetylpolyamine, the method including adding a proteinase inhibitor and/or a peptidase inhibitor to the solution, or lowering the pH of the solution. Employment of the method of the present invention realizes inhibition of degradation of diacetylpolyamine in a solution containing diacetylpolyamine, and determination of more accurate assay data on diacetylpolyamine. The method of the present invention is widely applicable to, for example, a sample containing proteinase or peptidase (e.g., urine or cell lysate), or an assay reaction mixture which may unintentionally contain proteinase or peptidase. Therefore, the method is very useful for assay of diacetylpolyamine. | 10-01-2009 |
| 20090305427 | APPARATUS AND PROCESS FOR SENSING FLUORO SPECIES IN SEMICONDUCTOR PROCESSING SYSTEMS - A gas detector and process for detecting a fluorine-containing species in a gas containing same, e.g., an effluent of a semiconductor processing tool undergoing etch cleaning with HF, NF | 12-10-2009 |
| 20090317913 | DETECTION OF PEROXIDE RADICALS AND REACTION INITIATORS - Sensors including a functional component, methods for making such sensors and methods for using sensors including a functional component for the detection of free radical forming compounds including peroxides and devices incorporating such sensors are provided herein. | 12-24-2009 |
| 20100144049 | PRECONCENTRATOR DEVICE INCORPORATING A POLYMER OF INTRINSIC MICROPOROSITY - Improved preconcentrators, particularly MEMs scale preconcentrators which possess a coating comprising polymers of intrinsic microporosity (PIMs). There is further provided devices comprising the preconcentrator, and methods of preparation and use. There is particular benefit directed to the use of a MEMs scale heater coated with the PIMs for use in hand-held or field portable chemical detection devices. The polymer of intrinsic microporosity comprises a polymer, with a monomer repeat unit of Formula I wherein A is one or more optionally substituted aryl, heterocyclic, cycloalkyl or bicycloalkyl rings, π is greater than 5, preferably 5 to 10000, and X may be selected from CH, CH | 06-10-2010 |
| 20100173420 | FLUORESCENCE DETECTION OF NITROGEN-CONTAINING EXPLOSIVES AND BLUE ORGANIC LED - The invention provides a sensor for detecting nitrogen containing high explosives. The sensor includes a substrate and a blue-photoluminescent metallofluorene copolymer to be carried on said substrate during testing for nitrogen containing high explosives. The copolymer is preferably a blue-photoluminescent metallofluorene copolymer, and preferably is a vinyl bridged silafluorene copolymer. A method for detecting nitrogen containing high explosives involves exposing a copolymer to an analyte, preferably by spraying the copolymer or otherwise coating the substrate after it has been exposed to analyte and then exciting the copolymer to luminesce. The copolymer is observed for fluorescence quenching, which can be through human or electronic observation. The invention also provides for synthesis of a vinyl bridged silafluorene polymer by providing diethynylmetallofluorene and dihydrosilafluorene as precursors and conducting catalytic hydrosilation of the precursors. In a blue emitting organic light emitting diode of the invention, an emitting layer is blue-photoluminescent metallofluorene copolymer. | 07-08-2010 |
| 20100184231 | Method for the determination of an analyte comprising a primary amino group, and kit for labeling said analyte - The invention provides a method for labeling an analyte comprising a primary amino group, the method comprising:
| 07-22-2010 |
| 20100248380 | METHOD AND ASSAYS FOR QUANTITATION OF ACETAMIDE IN A COMPOSITION - Disclosed herein are the methods and assays for quantitative determination of acetamide in a composition of a sample. | 09-30-2010 |
| 20110081728 | VISUAL, CONTINUOUS AND SIMULTANEOUS MEASUREMENT OF SOLUTION AMMONIA AND HYDROGEN ION CONCENTRATION - Particular aspects provide novel devices and methods for accurately measuring total ammonia (NH | 04-07-2011 |
| 20110081729 | Hydrate Inhibition Test Loop - The detecting and monitoring of solid structure or phase transformation, such as those used for testing the formation of gas hydrates and their inhibition by chemical additives may be conducted in a multi-test assembly of laboratory bench scale loops. The test loop contains a fluid that includes water and hydrate-forming guest molecules such as methane, ethane, carbon dioxide and the like at hydrate-forming conditions of low temperature and high pressure. A small bit or “pig” may be circulated through the test loop at variable speeds to circulate the fluid in the loop. The pig may be moved or impelled through the test loop remotely. The exterior of the pig and/or the interior of the loop may be smooth and/or have a friction-reducing coating thereon to facilitate movement of the pig through the loop. The formation of hydrates may be monitored with consistent and reproducible results. | 04-07-2011 |
| 20110177605 | On-Board Control for Analytical Elements - The invention concerns a reagent system for the so-called on-board control of analytical elements, in particular test strips, containing an organic N-oxide or a nitroso compound. The invention also concerns analytical elements containing a reagent system for a detection reaction and a reagent system for an on-board control. Furthermore, the invention concerns a method for checking analytical elements in which a reagent system for an on-board control is examined optically or electrochemically with the aid of a measuring instrument for changes which could indicate a stress of the analytical element. | 07-21-2011 |
| 20120070903 | METHOD AND APPARATUS FOR MEASURING THE HOT-SPOT TEMPERATURE IN AN ELECTRIC APPARATUS CONTAINING AN OIL - A method for measuring the real hot-spot temperature in an electric apparatus containing an oil, such as an electric power transformer. The electric apparatus is operated under predetermined and modifiable operating conditions. This method comprises the use of one or several chemical compounds or tracers present and soluble in the oil. Each tracer may transform, at a given temperature, in order to form a residue, such as a soluble gas. From the presence of the residue in the oil, the operator will be able to determine under which predetermined operating condition the hot-spot has been reached and to deduce the hot-spot for a given condition. Among different used compounds, there are diazoic compounds, carbonyl metals, colorants, pigments, liquid crystals and albumins. The method also allows to check the quality of the apparatus on the market and to estimate its life span. | 03-22-2012 |
| 20120122229 | METHODS OF ASSAYING FOR TETRAHYDROCANNABINOL - The invention provides a method of assaying for tetrahydrocannabinol in a body fluid, said method comprising contacting a sample of body fluid with an imine capable of reacting with tetrahydrocannabinol to yield a quinone imine, and detecting the formation of a quinone imine, characterised in that said sample is contacted with said reagent compound at a pH of at least 10.5. | 05-17-2012 |
| 20120178173 | COMPOSITIONS AND METHODS FOR DETECTION OF EXPLOSIVES - This invention provides polymeric coordination compounds capable of forming three-dimensional microporous metal organic frameworks (MMOFs) that are useful for detection of explosive compounds. The polymeric coordination compounds comprise a repeating unit comprising a transition metal coordinated to at least one binding member of a bidentate binding site on each of two polyfunctional ligands and one binding site of a bis-pyridine exodentate bridging ligand, for example, the repeating unit comprising formula [Zn | 07-12-2012 |
| 20120184044 | MOLECULARLY-IMPRINTED POLYMERIC MATERIALS FOR VISUAL DETECTION OF EXPLOSIVES - A molecularly-imprinted polymeric material that selectively binds with an explosive compound. The molecularly-imprinted polymeric material comprises a cross-linked, water-soluble polymer having basic functional groups and a binding site capable of selectively binding an explosive compound. The basic functional groups have a pKa that is sufficiently high to react with the explosive compound to result in a visually detectable color change. For example, the basic functional groups may have a pKa in the range of 6.0-9.0. The molecularly-imprinted polymeric material may be used in a variety of applications, such as a projectile for detecting explosives. Also described is a method for making a molecularly-imprinted polymeric material. | 07-19-2012 |
| 20120288950 | FLUORESCENT ORGANIC NANOFIBRILS AS SENSORY MATERIALS FOR EXPLOSIVES DETECTION - A class of fluorescent, organic nanofibrils, and particularly the films comprising entangled piling of these nanofibrils exhibiting effective quenching of their fluorescence upon exposure the vapor of explosives is disclosed. A sensor and a method for sensing the explosives vapor and other volatile organic compounds is disclosed, including the explosives taggants through the modulation of the fluorescence of the nanofibril film and the electrical conductivity of the nanofibrils. A development of synthetic methods is disclosed, such as protocols and techniques that lead to the production of various arylene-ethynylene macrocycle (AEM) molecules, which consist of a shape-persistent, toroidal scaffold in planar conformation, with minimal ring strain and highly tunable ring sizes (from 0.5 nm to above 10 nm). An approach to optimization of the one-dimensional molecular arrangement along the long axis of the nanofibril is also disclosed, which provides increased exciton migration and charge transport (via pi-electronic delocalization). | 11-15-2012 |
| 20120329166 | FLOW REGULATING SYSTEM AND MONITORING DEVICE COMPRISING SAID FLOW REGULATING SYSTEM FOR THE DETECTION OF AIR BORNE ANALYTES - A flow regulating system for maintaining a stable air flow comprising at least one pump, a mass flow sensor, an ambient temperature sensor, an ambient pressure sensor, a temperature compensation sensor measuring the temperature of said mass flow sensor, and a control system is disclosed, as well as a method for measuring a flow using said flow regulating system, a device for the monitoring of air-borne compounds present in air in both a gas phase and a particle phase, wherein it comprises a sampling device, an enrichment trap 1, a calibration and tuning module, a blank module, said flow regulating system, a chromatography unit, and a detection unit, and a method for the detection of air-born compounds in an air flow by using said monitoring device. | 12-27-2012 |
| 20130017617 | Incorporation of Chemochromic Pigment into a Variety of Articles as an Indicator for the Presence of Hypergolic Fuels - A chemochromic indicator is provided that includes a hypergolic fuel sensing chemochromic pigment that change from a first color to a second color in the presence of a hypergolic fuel. In a first embodiment, a chemochromic indicator is provided for detecting the presence of a hypergolic fuel such that the irreversible hypergolic fuel sensing chemochromic pigment includes potassium tetrachloroaurate (KAuCl | 01-17-2013 |
| 20130115705 | FUNCTIONALIZED NANOSTRUCTURES FOR DETECTING NITRO-CONTAINING COMPOUNDS - Devices, methods and systems for detecting nitro-containing compounds such as TNT, which utilize semiconductor nanostructures modified by a functional moiety that interacts with the nitro-containing compound, are disclosed. The functional moiety is attached to the nanostructures and is being such that upon contacting a sample that contains the nitro-containing compound, the nanostructure exhibits a detectable change in an electrical property, which is indicative of the presence and/or amount of the nitro-containing compound in the sample. Electronic noses for generating recognition patterns of various nitro-containing compounds, comprising a plurality of nanostructures modified by versatile functional moieties are also disclosed. The devices, methods and systems are suitable for detecting nitro-containing compounds in both liquid and gaseous states and for detecting a concentration of a nitro-containing compound such as TNT as low as attomolar concentrations. | 05-09-2013 |
| 20130122602 | METHODS FOR DETECTING CATECHOLAMINES BY MASS SPECTROMETRY - Provided are methods for determining the amount of one or more of one or more of epinephrine (E), norepinephrine (NE), and dopamine (D) in a sample using mass spectrometry. The methods generally involve ionizing one or more of E, NE, and D in a sample and detecting and quantifying the amount of the ion to determine the amount of one or more of E, NE, and D in the sample | 05-16-2013 |
| 20130217139 | FLUORESCENT CARBAZOLE OLIGOMERS NANOFIBRIL MATERIALS FOR VAPOR SENSING - A fluorescence based sensor ( | 08-22-2013 |
| 20140127823 | Device and Method for Producing CO2, N2 and/or SO2 from a Sample - The invention relates to a device for producing CO | 05-08-2014 |
