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Class 422/82.02 - Resistance or conductivity


Subclass of Class 422 - Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing
Definition: Apparatus having means for measuring the resistance or conductivity
No. of patents: 500
Last issue date: 05/29/2012


1                      
NumberTitleIssue Date
8187540Concentration monitor method
A concentration monitor for monitoring a concentration of a plurality of use solutions, each of the plurality of use solutions being, at least, a concentrate in a diluent, each of the plurality of use solutions having a resistivity which varies as a function of both...
05/29/2012
8182747Test device for analyzing a biological sample liquid
The invention concerns a test device for analyzing especially a biological sample liquid comprising a composite body consisting of a plurality of layers of flat materials and a sample channel located in the composite body for transporting the sample liquid from an a...
05/22/2012
8137625Urea sensor
A urea sensor includes a detecting portion which, in use, is immersed in a liquid accommodated in a urea solution tank for detecting the thermal conductivity of the liquid to detect whether the liquid accommodated in the urea solution tank is an aqueous urea solutio...
03/20/2012
8048377Immobilizing chemical or biological sensing molecules on semi-conducting nanowires
The present invention is drawn toward a chemical or biological sensor that can comprise a semi-conducting nanowire and a chemical or biological sensing molecule tethered to the semi-conducting nanowire through a spacer group including a hydrophilic reactive group. I...
11/01/2011
8021615Sensor that compensates for deterioration of a luminescable medium
A sensor that generates an output signal in response to a stimulus, where the output signal is generated with a predetermined relationship to one or more properties of the stimulus such that the one or more properties of the stimulus can be determined as a function ...
09/20/2011
8012421Concentration monitor
A concentration monitor for monitoring a concentration of a plurality of use solutions, each of the plurality of use solutions being, at least, a concentrate in a diluent, each of the plurality of use solutions having a resistivity which varies as a function of both...
09/06/2011
7871572Chemical sensors based on metal nanoparticle encapsulated by mixed ligand and sensor array
Provided are mixed ligand metal nanoparticle chemical sensors in which metal nanoparticles are encapsulated by at least two kinds of different molecule ligands having a relatively low conductivity and various composition ratios, and a chemical sensor array in which ...
01/18/2011
7824618Sensor structure and method of fabricating the same
Provided is a sensor structure comprising a heater and a temperature sensor at the center of a membrane having a well structure, allowing a temperature to be rapidly controlled with low power, and the object is analyzed using a conductivity change measured at two or...
11/02/2010
7790111Osmotic reaction detector for detecting biological and non-biological reactions
A method and apparatus for measuring the presence or absence of interaction between at least a first and second material of interest by measuring osmotic pressure changes in an osmotic cell. Changes in osmotic pressure are determined by measuring the amount of compr...
09/07/2010
7754152Electrical connection system for electrochemical analysis system
The invention relates to an electrical connection system for an analysis system and a method for analysis of a liquid sample on an analytical test element using the described analysis system. The analysis system comprises an evaluation appliance for evaluation of el...
07/13/2010
7662341Sensor arrangement and method for operating a sensor arrangement
A sensor arrangement and method of operating the sensor arrangement are described. The sensor arrangement has sensor devices formed on or in a substrate and a calibration device for calibrating a respective sensor device. Each sensor device has an electrical signal ...
02/16/2010
7541004MEMS-based sensor for lubricant analysis
A fluid contamination analyzer employs one or more MEMS-based sensors. The sensors are incorporated into probes or alternatively may be employed in an in-line analyzer residing in the fluid. The sensors, which can be selective to detect a distinct contaminant within...
06/02/2009
7531136Chemical sensor
The application relates to a chemical sensor device comprising a substrate (1), a sensor medium (3) formed on the substrate, the sensor medium comprising one-dimensional nanoparticles, wherein the one-dimensional nanoparticles essentially consist of a ...
05/12/2009
7435384Diagnostic instrument with movable electrode mounting member and methods for detecting analytes
An instrument (A) detects in a sample the presence of an analyte. The sample includes electrically readable particles (126) with an agent attached thereto that binds with the analyte or is an analog of the analyte. The instrument includes a port for the sampl...
10/14/2008
7416699Carbon nanotube devices
Nanotubes and nanotube-based devices are implemented in a variety of applications. According to an example embodiment of the present invention, a nanotube is adapted to pass current between two conductive elements. In one implementation, each conductive element incl...
08/26/2008
7410809Particle or cell analyzer and method
A particle analyzer in which tagged particles to be analyzed are drawn through a suspended capillary tube where a predetermined volume in the capillary tube is illuminated. The illumination scattered by said particles is detected by a detector to count all particles...
08/12/2008
7407811System and method for analyte measurement using AC excitation
A method of measuring an analyte in a biological fluid comprises applying an excitation signal having a DC component and an AC component. The AC and DC responses are measured; a corrected DC response is determined using the AC response; and a concentration of the an...
08/05/2008
7404928Thiol terminated monodisperse ethylene oxide oligomer capped gold nanoclusters
A thiol terminated ethylene oxide oligomer and the method of substituting the oligomer onto a gold nanocluster surface using a thiol-exchange reaction to form a charge-neutral, non-ionizable, water soluble, ethylene oxide protected gold nanocluster. The thiol termin...
07/29/2008
7402381Method of immobilizing molecules onto a solid phase substrate and method of fabricating a biosensor using the method
Aspects of the invention can provide a method capable of easily realizing immobilization with the optimum density derived from a concentration control and without phase separation in coadsorption of a number of molecules. The immobilization method can include the st...
07/22/2008
7402425Stress-based electrostatic monitoring of chemical reactions and binding
Electrostatic capacitance measurements are used to detect chemical or biological analytes, or chemical interactions, with great sensitivity. A diaphragm is coated with a material capable of selectively interacting with an analyte of interest, and interaction of the ...
07/22/2008
7402283Electrolytic eluent generator and method of use
An acid or base is generated in an aqueous solution by the steps of: (a) providing a source of first ions adjacent an aqueous liquid in a first acid or base generation zone, separated by a first barrier (e.g., anion exchange membra...
07/22/2008
7390650System and method for obtaining and maintaining high-resistance seals in patch clamp recordings
The invention provides a system, system components, and a method for rapidly obtaining and stably maintaining a cell in optimal contact with the cell-contacting surface of a sensor in a cell-based biosensor. In one aspect, the system maximizes the seal between a who...
06/24/2008
7390667System and method for analyte measurement using AC phase angle measurements
A method of measuring an analyte in a biological fluid comprises applying an excitation signal having a DC component and an AC component. The AC and DC responses are measured; a corrected DC response is determined using the AC response; and a concentration of the an...
06/24/2008
7374721Chip with measuring reliability and a method thereof
A chip with measuring reliability and a method thereof are provided. The present invention serially connects a resistor having a resistance equal to or a little more than a maximum resistance of the chip itself to the resistor Rs of the chip so as to comp...
05/20/2008
7371561In vitro, multiple electrode pair array and multiple treatment cell apparatus for use in electroporation
A multiple electrode pair array apparatus is provided for use with a multiple well plate which has multiple wells distributed in a two-dimensional matrix array which has R rows and C columns. The multiple electrode pair array apparatus includes a non-conductive base...
05/13/2008
7368085Analyte detector
An analyte detector including a device having a surface, wherein the device is capable of detecting a charge adjacent to the surface. The surface includes a plurality of molecules bonded thereto, wherein the molecules have a structure (I):
05/06/2008
7367221Sensor for detection of liquid ingredients, particularly for biological materials and the detection device contained in the sensor
This invention relates to a sensor for the detection of liquid ingredients with a carrier element (10), a sensor element (1) on the carrier element (10) and a sensor array, which is disposed on the surface of the sensor element and contains one ...
05/06/2008
7364700Ozone gas sensing element, detection apparatus, and measurement method
A sensing element in which a dye that changes in the light absorption characteristic of the visible region upon reaction with ozone gas is deposited in the pores of a porous material is prepared. A change in dye before and after exposing the sensing element to a mea...
04/29/2008
7361307Biological fluid constituent sampling and measurement devices
A device for accessing biological fluid, sampling biological fluid constituents and determining the concentration of at least one target constituent within the accessed biological fluid is provided. The device has at least one micro-piercing member used to penetrate...
04/22/2008
7361313Methods for uniform metal impregnation into a nanoporous material
The methods, systems 400 and apparatus disclosed herein concern metal 150 impregnated porous substrates 110, 210. Certain embodiments of the invention concern methods for producing metal-coated porous silicon substrates 110, 210 that exhi...
04/22/2008
7354770Sensing device and method using photo-induced charge movements
A device and method which comprises a sensing surface on a membrane, solid surface or electrode, where the sensing surface contains a dye or chromophore chosen in relation to a particular target substance to be detected and quantified. The dye or chromophore is of a...
04/08/2008
7354553Method and apparatus for detecting the presence of elemental mercury in a gas sample
An improved elemental mercury analyzer utilizes a fluorescence assembly in combination with a fluorescence quenching reduction mechanism to detect the concentration of elemental mercury within an emission gas sample, via fluorescence of the mercury within the gas sa...
04/08/2008
7347974Materials, method and apparatus for detection and monitoring of chemical species
A method for investigating a target environment to determine whether or in what amount a chemical species may be present therein, which comprises: (a) exposing to said environment an article of manufacture comprising a multiplicity of particles in close-packed orien...
03/25/2008
7344679Method and apparatus for point of care osmolarity testing
An apparatus and a method are disclosed for providing point of care testing for osmolarity of a bodily fluid. An apparatus is disclosed as having a fluid pathway passing through it for receiving and testing a sample fluid. The invention permits osmolarity testing of...
03/18/2008
7341692Detection apparatus for biological materials and methods of making and using the same
Apparatus comprising a surface site layer having a distal site end, wherein the distal site end includes a substantially inorganic surface having a chemical composition selected from a group consisting of metals, semiconductors, insulators, and mixtures thereof, the...
03/11/2008
7338639System and method for analyte measurement
A method of measuring an analyte in a biological fluid comprises applying an excitation signal having a DC component and an AC component. The AC and DC responses are measured; a corrected DC response is determined using the AC response; and a concentration of the an...
03/04/2008
7338808Method and apparatus for determining zeta potential using alternating current electric field and T channel
Provided is a method for determining a zeta potential generated between a solid wall and a solution. The method includes (a) injecting an electrolyte solution into a first inlet of a T channel, which is provided with first and second inlet electrodes and a grounded ...
03/04/2008
7338637Microfluidic device with thin-film electronic devices
A microfluidic device for analysis of a sample. The microfluidic device includes a substrate portion that at least partially defines a chamber for receiving the sample. The substrate portion includes a substrate having a surface. The substrate portion also includes ...
03/04/2008
7335336Sensor array using lateral field excited resonators
A sensor for sensing a property of a plurality of analytes includes a substrate having a resonant frequency that varies based on contact with a predetermined property of an analyte. The substrate has an analyte contact surface and a non-analyte contact surface locat...
02/26/2008
7329387Field-effect transistor, sensor using it, and production method thereof
A sensor which has high measuring sensitivity and is excellent in response is provided by forming a porous film in a sensitive section of a field-effect transistor. It comprises a porous body, which is formed on a sensitive section (here, a gate insulating film) of ...
02/12/2008
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