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Class 436/150 - Of a liquid


Subclass of Class 436 - Chemistry: analytical and immunological testing
Definition: Subject matter wherein an electric or magnetic property
No. of patents: 394
Last issue date: 04/03/2012


1                    
NumberTitleIssue Date
8148163Sample processing units, systems, and related methods
Sample processing units useful for mixing and purifying materials, such as fluidic materials are provided. A sample processing unit typically includes a container configured to contain a sample comprising magnetically responsive particles, and one or more magnets th...
04/03/2012
8148164System and method for determining the concentration of an analyte in a sample fluid
The present disclosure relates to various methods for measuring the amount of an analyte present in a biological fluid using an electrochemical testing process. Various embodiments are disclosed, including the use of AC test signals and the performance of tests havi...
04/03/2012
8093064Method for using magnetic particles in droplet microfluidics
Methods of utilizing magnetic particles or beads (MBs) in droplet-based (or digital) microfluidics are disclosed. The methods may be used in enrichment or separation processes. A first method employs the droplet meniscus to assist in the magnetic collection and posi...
01/10/2012
8058077Method for coding information on a biosensor test strip
The present invention provides a test strip for measuring a concentration of an analyte of interest in a biological fluid, wherein the test strip may be encoded with information that can be read by a test meter into which the test strip is inserted. ...
11/15/2011
8026104Transient decay amperometry
A biosensor system determines an analyte concentration of a biological sample using an electrochemical process without Cottrell decay. The biosensor system generates an output signal having a transient decay, where the output signal is not inversely proportional to ...
09/27/2011
8008089Method and system for checking measurement result
A system for checking measurement results is provided with a urine qualitative analyzer for measuring the specific gravity of a urine, urinary particle analyzer for measuring urine conductivity, and a computer. The urine specific gravity measured by the urine qualit...
08/30/2011
7977112System and method for determining an abused sensor during 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...
07/12/2011
7803632Method for detecting substance in liquid and sensor for detecting substance in liquid
A method for detecting a substance in a liquid with high accuracy and high sensitivity includes recording frequency drifts of output frequencies of oscillator circuit outputs of m sensing oscillator circuits respectively including sensing SAW elements and frequency ...
09/28/2010
7488601System and method for determining an abused sensor during 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...
02/10/2009
7439072Apparatus and method for droplet measurements
There is provided a liquid droplet monitoring and measuring apparatus (1) for a liquid droplet dispensing system having a nozzle (5) with a dispensing tip (7). The apparatus (1) comprises an inner chamber (2) surrounded by an outer...
10/21/2008
7438853Photoelectrocatalytic method and photoelectrochemical detector for electrochemical analysis
A photoelectrocatalytic method for detecting current that illuminates a photoelectrochemical electrode to generate a photocurrent and to magnify the current. Thereby, accuracy of the detection is increased. A photoelectrochemical detector used in the method has a ba...
10/21/2008
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
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
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
7393504Flow injection electrochemical detecting device
A flow injection electrochemical detecting device has a base (10), a cover pivotally mounted on the base (10), and a locking device attached between the base (10) and the cover (20). The base (10) has a recess (12) defined i...
07/01/2008
7390662Method and apparatus for performing platelet measurement
The present invention relates to a hematology instrument system that discriminates platelets from red blood cells, debris and other particles within a blood sample. The instrument system uses an optical trigger and collects data at optical sensor locations relative ...
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
7384791Method of analyzing blood
A method of analyzing blood includes delivering a blood sample to a test device, applying a spatially varying electric field to the blood sample to provide a depleted cell concentration in a portion of the blood sample, and sensing a property of the portion of the b...
06/10/2008
7357898Microfluidics packages and methods of using same
Microfluidics packages and methods of use are described, comprising in one embodiment a substrate having a top surface and means to lower pressure on the top surface; a fluidics card having a bottom surface and means to allow fluids to traverse through the card; and...
04/15/2008
7354767Reference control composition containing a nucleated red blood cell component made of non-nucleated blood cells
A reference control composition containing a nucleated red blood cell component and the method of making are disclosed. The reference control composition includes a nucleated red blood cell component made of fixed non-nucleated blood cells and a suspension medium. T...
04/08/2008
7338811Integrated circuit chip for bioassays
The invention is directed to novel IC chips containing substances used particularly in bioassays. Furthermore, the invention is directed to assay methods and kits using these chips. ...
03/04/2008
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
7335526Sensing system
A ChemFET Sensing system is Described. ...
02/26/2008
7329489Methods for drug discovery, disease treatment, and diagnosis using metabolomics
The small molecule profiles of cells are compared to identify small molecules which are modulated in altered states. Cellular small molecule libraries, methods of identifying tissue sources, methods for treating genetic and non-genetic diseases, and methods for pred...
02/12/2008
7326384Method and apparatus for detecting physicochemical changes emitted by biological sample
A device for detecting a physicochemical change in a biological sample comprising at least one measuring electrode provided by causing a conductive material to enter into a porous film, and a conductor connected to the measuring electrode. ...
02/05/2008
7312087Devices and methods for biochip multiplexing
The invention is directed to devices and methods that allow for simultaneous multiple biochip analysis. The method of analyzing the plurality of biochips includes inserting a first biochp into a first station of an analysis device, inserting a second biochip into a ...
12/25/2007
7291503Reversible resistivity-based sensors
One aspect of the present invention relates to a method for detecting the presence of an analyte by comparing the conductivity of a mixture containing an analyte and a sensor to the conductivity of the sensor in the absence of analyte. In certain embodiments, the se...
11/06/2007
7291310Microsystem for determining clotting time of blood and low-cost, single-use device for use therein
A microsystem for determining clotting time of blood and a low-cost, single-use device for use therein are provided wherein the device has no moving parts or expensive optical sensors or magnets. The device includes a microfluidic channel and a microsensor at least ...
11/06/2007
7276377Method and apparatus for determining anticoagulant therapy factors
Methods and apparatus are disclosed for determining a new anticoagulant therapy factor (nATF) for monitoring oral anticoagulant therapy to help prevent excessive bleeding or deleterious blood clots that might otherwise occur before, during or after surgery. In one e...
10/02/2007
7267751Programmable multiplexed active biologic array
The present invention is directed to devices and methods for carrying out and/or monitoring biological reactions in response to electrical stimuli. A programmable multiplexed active biologic array includes an array of electrodes coupled to sample-and-hold circuits. ...
09/11/2007
7256048Method for detection of malaria and other parasite infections
A method of detecting parasite infection, particularly malaria, includes mixing a blood sample with a lytic reagent system to lyse red blood cells, and to form a sample mixture; performing a differential analysis of white blood cells of the sample mixture on a blood...
08/14/2007
7253616Microelectromechanical magnetometer
An apparatus comprising a substrate and a MEM device. The MEM includes a comb capacitor and a magnetic element physically connected to one electrode of the comb capacitor. The magnetic element is capable of moving the one electrode in a manner that alters a capacita...
08/07/2007
7247271Compact ceramic sensor for fuel volatility and oxygenate concentration
A compact ceramic fuel property sensor comprises a plurality of laminated ceramic layers. The heater, temperature sensor, and capacitance measurement electrodes are embedded between the layers. The capacitance electrodes include interdigitated electrodes and fuel tr...
07/24/2007
7247485Karl Fischer reagent
Karl Fischer reagent comprising iodide, sulphur dioxide with an initial concentration above 0.5 M, and imidazole/imidazole derivative dissolved in alcoholic solvent, whereby the molar ratio between the initial imidazole/imidazole derivative concentration and the ini...
07/24/2007
7237430Method and apparatus for enhanced detection of a specie using a gas chromatograph
The invention includes a method and apparatus for a chromatography system having a chromatographic column for separating gases in a mixture from one another and an electrochemical gas sensor coupled to the chromatographic column for detecting a gas being emitted fro...
07/03/2007
7226563Ion-detecting sensors comprising plasticizer-free copolymers
Plasticizer-free ion-detecting sensors for detecting a target ion in a sample are provided. The sensor comprises a plasticizer-free copolymer comprised of polymerized units of methacrylate monomers and a polymerizable ion exchanger, wherein the methacrylated monomer...
06/05/2007
7220550Molecular wire injection sensors
Disclosed is a sensor for sensing the presence of an analyte component without relying on redox mediators. This sensor includes (a) a plurality of conductive polymer strands each having at least a first end and a second end and each aligned in a substantially common...
05/22/2007
7205153Analytical reagent for acid copper sulfate solutions
Embodiments of the invention provide an analytical method and analytical reagent solutions for determining the concentration of electrolyte components, such as copper, acid and chloride constituents in an acid or basic metal plating bath using a chemical analyzer. C...
04/17/2007
7201876Ion-detecting sensors comprising plasticizer-free copolymers
Ion-detecting sensors for detecting a target ion in a sample are provided. The sensor comprises a plasticizer-free copolymer comprised of polymerized units of methacrylate monomers having pendent alkyl groups of different length and a functionalized ionophore of sai...
04/10/2007
7195738Sensor and detecting method
A sensor is provided for detecting a target substance in a sample by detecting a product formed in the presence of an enzyme and an enzyme substrate. The sensor comprises two or more working electrodes, a first capturing molecule immobilized on the working electrode...
03/27/2007
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