Class / Patent application number | Description | Number of patent applications / Date published |
205787000 | For organic compound | 22 |
20080197027 | Novel Bioassay System Using a Nanoparticle - The invention is directed to a method for detecting a substance of interest using a nanoparticle containing a first substance and a matrix containing a second substance and detecting the radio signal emitted as a result of complex formation between the first and second substance as well as systems and kits using said method. | 08-21-2008 |
20090014340 | DEVICES, SYSTEMS, AND METHODS FOR MEASURING GLUCOSE - Systems and methods for detecting glucose in a sample using, for example, a regenerable sensor are described. The sensor may, for example, include boronic acid to detect with great sensitivity and at a low cost the glucose in the sample. | 01-15-2009 |
20090200181 | Platform for analysis liquid samples - The present application relates to apparatus for sampling and analysis of analytes in a liquid sample. A liquid sample is pre-concentrated using a chromatographic column prior to analysis via a two stage analysis apparatus. A high-performance liquid chromatography system with ultra violet detection may be used in conjunction with electrochemical detection for the analysis of environmental contaminants, including explosive residues. The present invention also provides for on-site analysis of such contaminants. The present invention also provides for methods of analyzing the components of a liquid sample, including methods for on-site analysis. | 08-13-2009 |
20090211923 | SENSORS - The subject invention provides devices and methods for the analysis of a body fluid. Embodiments include sensors that are sample-fillable by contacting a corner of the sensor to a sample. | 08-27-2009 |
20090229996 | ANALYTE SENSORS AND METHODS - Methods of determining analyte concentration. The methods use a fraction of the predicted total charge, from analyte electrolysis, instead of using time, for determination of a data collection endpoint. The total charge is then extrapolated from the data collection endpoint. The analyte concentration is determined from the total charge. | 09-17-2009 |
20100012529 | Voltammetric Technique to Determine the Individual Concentration of Different Antioxidants of the Same Class - Disclosed in certain embodiments is a method of determining the individual concentration of different antioxidants of the same class in a sample comprising contacting the sample with an effective amount of phenol; and analyzing the sample by voltammetry. | 01-21-2010 |
20100032319 | DIAGNOSTIC CASSETTE FOR ELECTROCHEMICAL MEASURING APPARATUS AND METHOD OF DIAGNOSING ELECTROCHEMICAL MEASURING APPARATUS - A diagnostic cassette for diagnosing an electrochemical measuring apparatus is disclosed. The electrochemical measuring apparatus is to perform electrochemical measurement on a sample in a sample cassette, which is attachable to and detachable from the electrochemical measuring apparatus, and includes a first working electrode interface, a first counter electrode interface, and a first reference electrode interface. The diagnostic cassette is attachable to and detachable from the electrochemical measuring apparatus like the sample cassette, and includes a second working electrode interface connectable to the first working electrode interface, a second counter electrode interface connectable to the first counter electrode interface, a second reference electrode interface connectable to the first reference electrode interface, and one of a capacitor and a resistor including one terminal connected to the second working electrode interface and the other terminal connected to the second counter electrode interface and the second reference electrode interface. | 02-11-2010 |
20100084288 | Electrochemical Cell - A method for determining the concentration of a reduced or oxidized form of a redox species is provided. In one exemplary embodiment, an electrochemical apparatus is provided in which the apparatus includes a hollow electrochemical cell for measuring a concentration of glucose in a blood sample, a current of the cell is measured, and a concentration of a redox mediator is determined, at least in part from, a measured current of the cell. The hollow electrochemical cell can include at least one non-metal working electrode, at least one counter electrode or counter/reference electrode, and a spacer interposed between the working electrode and the counter or counter/reference electrode. In one embodiment the working electrode and the counter or counter/reference electrode are not co-planer and are separated by a distance of from about 20 microns to about 200 microns. In another embodiment the working electrode and the counter or counter/reference electrode are not co-planer and the cell has an effective cell volume of less than 1.5 microliters. | 04-08-2010 |
20100133121 | METHOD FOR EVALUATING TARGET MOLECULES - A method for evaluating a target molecule bound to a probe molecule provided with a marker includes: applying AC voltage between a working electrode provided on a substrate and a counter electrode; and using a signal obtained from the marker on the probe molecule bound to the working electrode when a frequency of the AC voltage is varied, or an average value of the signal, to determine at least one of a Stokes radius or molecular weight of the target molecule, a binding rate between the probe molecule and the target molecule, a binding rate constant therebetween, a dissociation rate therebetween, and a dissociation rate constant therebetween. | 06-03-2010 |
20100163432 | MICROSENSOR FOR DETECTION OF D-AMINO-ACIDS - The instant invention is about a microelectrode, in particular for measuring the concentration of a D-amino acid, said microelectrode comprising means for oxidation of said D-amino acid into at least a compound B, means for optimising the detection of said compound B, and means for reducing interferences, in particular interferences due to the oxidation of other species than compound B; a device comprising such a microelectrode; a method for making such a microelectrode, a method for detecting and/or measuring the concentration of a D-amino-acid in a medium. | 07-01-2010 |
20110259762 | BIOSENSOR FOR ELECTROCHEMICAL MEASUREMENT OF 1,5-ANHYDROGLUCITOL, AND MEASURING METHOD AND MEASURING KIT USING THE SAME - The biosensor has an electrode system for electrochemically measuring 1,5-anhydroglucitol (1,5-AG) and a reagent layer formed on said electrode system. The reagent layer contains an enzyme for measuring 1,5-anhydroglucitol, phenothiazine compounds, a stabilizer selected from a group of compounds comprising metal salts, organic acids, and amino acids, and an acidic polymer compound as an optional ingredient. The biosensor has excellent storage stability and can electrochemically measure 1,5-anhydroglucitol unaffected by the hematocrit contained in a whole blood sample. | 10-27-2011 |
20120211375 | CAPACITIVE MORPHOLINO DIAGNOSTICS FOR ANALYSIS OF NUCLEIC ACIDS - Use of Morpholinos, a class of uncharged DNA analogues, for surface-hybridization applications. Monolayers of Morpholino probes on gold supports are fabricated with methods similar to those employed with DNA, and are used to hybridize efficiently and sequence-specifically with target strands. Hybridization-induced changes in the interfacial charge organization are analyzed with electrochemical methods and compared for Morpholino and DNA probe monolayers. Molecular mechanisms connecting surface hybridization state to the interfacial capacitance are identified and interpreted through comparison to numerical Poisson-Boltzmann calculations. Positive as well as negative capacitive responses (contrast inversion) to hybridization are possible, depending on surface populations of mobile ions as controlled by the applied potential. Quantitative comparison of surface capacitance with target coverage (targets/area) reveals a near-linear relationship, and demonstrates sensitivities (limits of quantification) in the pg mm | 08-23-2012 |
20120247978 | ELECTROCHEMICAL ETHYLENE SENSOR AND METHOD FOR MONITORING ETHYLENE - An electrochemical ethylene sensor and method for ethylene sensing are disclosed. In one aspect, an electrochemical ethylene sensor includes a working electrode and a counter electrode on an electrically insulating substrate. An ionic liquid layer covers the working electrode and counter electrode. In one method, a voltage is applied to the working electrode which is equal to or lower than the voltage required for the onset of oxidation of the material of the working electrode, for example, in the range spanning 700 mV before the onset of oxidation of the material of the working electrode. | 10-04-2012 |
20120267260 | MONITORING MEMBRANE-BOUND PROTEINS - An apparatus for examining membrane-bound proteins in a cell can include a chamber with an insulating partition dividing the chamber into an upper well and a lower well, and a pore penetrating the insulating partition. The pore can have a size and shape so as to snugly hold a cell in place therein. The apparatus can further include circuitry for delivering a radio frequency signal to the cell. A belt electrode for delivering electrical signals to the cell can be located within the insulation partition and substantially encircling the pore. A measuring circuit for measuring cell membrane impedance to the radio frequency signal is also provided, and changes in the impedance can signal a change in state of a protein in the cell membrane. | 10-25-2012 |
20130043143 | DEVICE FOR DETECTING GASES AND/OR VOLATILE ORGANIC COMPOUNDS (VOC) - The present invention concerns a device for detecting gases or volatile organic compounds (VOC) comprising an electrically conducting or semiconducting zone f unctionalized with an organic film resulting from the polymerization of aromatic diazonium salt derived monomer. | 02-21-2013 |
20130126363 | METHOD FOR DETERMINING THE PARTITION COEFFICIENT OF AN ANALYTE - The present invention provides a chemiresistor-based sensor for measuring the presence or amount of analyte in an electrolyte solution; said chemiresistor comprising (i) a chemiresistor film wherein the impedance of said nanoparticle film changes in the presence of an analyte; and (ii) two electrically conducting electrodes in electrical contact with said nanoparticle film; wherein said electrically conducting electrodes are adapted to be connected to a device for measuring the impedance of said chemiresistor film under a voltage signal and wherein the impedance of the double layer capacitor formed by the two electrically conducting electrodes in the presence of the electrolyte solution, is larger than the impedance of the chemiresistor film either before or after exposure of the chemiresistor film to the analyte. A method of using said chemiresistor-based sensor to measure the presence or amount of analyte is also provided. Further provided is a method of determining the partition coefficient of an analyte using said chemiresistor-based sensor. | 05-23-2013 |
20130146480 | NANOPORE DEVICE WITH GRAPHENE SUPPORTED ARTIFICIAL LIPID MEMBRANE - The invention features the use of graphene, a one atom thick planar sheet of bonded carbon atoms, in the formation of artificial lipid membranes. The invention also features the use of these membranes to detect the properties of polymers (e.g., the sequence of a nucleic acid) and identify transmembrane protein-interacting compounds. | 06-13-2013 |
20130153443 | DEVICE FOR MEASURING PROTEINS USING BIOSENSOR - A sensor for measuring a concentration of a specific protein using a biosensor with a measurement speed improved from a conventional impedance measurement. The sensor is capable of efficiently and accurately measuring impedance generated by a selective binding to the protein by Fourier-transforming an electric current signal obtained by applying a potential signal of a delta function waveform. The device for measuring a protein using a biosensor is capable of measuring concentration of the protein with accuracy, measurement time is shortened and the concentration of protein can be accurately measured by removing the influence of dispersion. | 06-20-2013 |
20140251835 | Fuel Cell Fermentation Monitor - Systems and methods for implementing an automated process which calculates the current specific gravity of a liquid by using the original gravity of a fermenting liquid and a measurement of the percent alcohol by volume. | 09-11-2014 |
20140291170 | ETHYLENE GAS DETECTION DEVICE AND METHODS OF USE - Provided herein are methods, apparatuses, and systems for enhancing the detection of reactive gases, such as ethylene gas, that are present at low concentrations in air samples. The methods and systems enhance the selectivity, sensitivity, and accuracy of electrochemical cells by removing interfering gases from the air samples. Some systems include an ethylene sensor that includes an electrochemical cell and a polar solvent gas trap pre-filter, wherein the gas trap is positioned upstream of the electrochemical cell. Some methods are methods of measuring an ethylene level in an air sample, and include passing the air sample by through a polar solvent gas trap, and measuring the ethylene level in the air sample with an electrochemical cell. | 10-02-2014 |
20160071467 | HAND-HELD TEST METER WITH DISPLAY ILLUMINATION ADJUSTMENT CIRCUIT BLOCK - A hand-held test meter for use with an analytical test strip in the determination of an analyte (for example, glucose)in a bodily fluid sample (such as a whole blood sample)includes a housing, a display module with a display illumination sub-module, a micro-controller disposed in the housing and a display illumination adjustment circuit block. The display illumination adjustment circuit block has a photo-sensor configured to sense ambient light levels and output a photo-sensor signal, a photo-sensor amplifier configured to receive the photo-sensor signal and output an amplified photo-sensor signal, a transfer function sub-block, and an illumination sub-module driver. The illumination sub-module driver is configured to drive the display illumination sub-module to illuminate the display module based on an illumination sub-module driver input signal. | 03-10-2016 |
20160131632 | Apparatus, Method and System for Detecting Salt in a Hydrocarbon Fluid - A method for determining a salt concentration of a hydrocarbon fluid using a conductivity sensor and a hydrocarbon testing solution includes forming the hydrocarbon testing solution. The electropolymerizable monomer is operable to form a resultant associated polymer at a peak potential of the electropolymerizable polymer. The method includes introducing the hydrocarbon testing solution into the conductivity sensor. The method includes inducing a range of potential across the hydrocarbon testing solution such that at least a portion of the electropolymerizable monomer polymerizes. The range of induced potential includes the peak potential of the electropolymerizable polymer. The method includes detecting a range of electrical current associated with the range of potential induced. The method also includes the step of determining the salt concentration of the hydrocarbon fluid using the range of potential induced and the range of electrical current detected. | 05-12-2016 |