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Charles S. Vann

Charles S. Vann, Marietta, GA US

Patent application numberDescriptionPublished
20100227384Portable Genomic Analyzer - An apparatus for identifying a target portion of a sample. In some embodiments, the sample can be substantially purified and/or amplified in a test chamber. In some embodiments, the sample can be provided in an amount so that amplification is not necessary. The apparatus generally comprises a test chamber having an input region for receiving a sample and an analysis region. A sample chamber can be defined by at least a portion of the test chamber. A separation mechanism can separate a target portion of the sample from the sample and an analysis chamber can aid in analyzing at least the target portion of the sample.09-09-2010
20100236930Electrowetting Dispensing Devices and Related Methods - A method for dispensing liquid for use in biological analysis may comprise positioning liquid to be dispensed via electrowetting. The positioning may comprise aligning the liquid with a plurality of predetermined locations. The method may further comprise dispensing the aligned liquid from the plurality of predetermined locations through a plurality of openings respectively aligned with the predetermined locations. The dispensing may be via electrowetting.09-23-2010
20110020179Systems and Methods for Multiple Analyte Detection - Systems and methods for multiple analyte detection include a system for distribution of a biological sample that includes a substrate, wherein the substrate includes a plurality of sample chambers, a sample introduction channel for each sample chamber, and a venting channel for each sample chamber. The system may further include a preloaded reagent contained in each sample chamber and configured for nucleic acid analysis of a biological sample that enters the substrate and a sealing instrument configured to be placed in contact with the substrate to seal each sample chamber so as to substantially prevent sample contained in each sample chamber from flowing out of each sample chamber. The substrate can be constructed of detection-compatible and assay-compatible materials.01-27-2011

Charles S. Vann, Burlingame, CA US

Patent application numberDescriptionPublished
20100300879DUAL ELECTRODE INJECTION OF ANALYTE INTO A CAPILLARY ELECTROPHORETIC DEVICE - An injection system including a first electrical circuit for concentration of an analyte and a second electrical circuit for injection of the concentrated analyte into an electrophoretic device is described, as well as methods of using the injection system.12-02-2010

Patent applications by Charles S. Vann, Burlingame, CA US

Charles S. Vann, El Granada, CA US

Patent application numberDescriptionPublished
20080281466System and Method for Selective Retrieval of Support Beads - Systems and methods are provided that can include a storage and retrieval robot operating under program control to extract a selective number of support beads from a storage or retainment region, for dispensing to titer wells or other vessels for assays and other purposes. According to various embodiments, the storage and retrieval robot can position a capture device over any one or more storage wells containing oligonucleotide or other material support beads, and withdraw or extract those support beads into a collection tube under vacuum pressure or other force. According to various embodiments, a selected number of support beads can be extracted, using a linear motor piston to limit available space for support bead insertion. According to various embodiments, the collected support beads can be dispensed into one or more destination tubes, wells, or other containers, surfaces, vessels, receptacles or mixture containment region, for use in assays or other purposes. According to various embodiments, a calculated plurality of support beads can be extracted or mixed in selective quantities. According to various embodiments, a sample subset of the supply support beads can be taken, to calculate an amount of actual oligonucleotide contained in the support beads. According to various embodiments, an adjustment or normalization of the number of support beads dispensed can be performed to compensate for variations in oligonucleotide amount, thereby enhancing the uniformity of concentration in solution.11-13-2008
20090017554DETECTION AND MIXING IN A CONDUIT IN INTEGRATED BIOANALYSIS SYSTEMS - Apparatuses and methods in which detection is integrated with various liquid processing and environmental control functions to create integrated bioanalysis systems are disclosed. Though the various integrated bioanalysis systems are useful for any number of analysis formats, they are adaptable to high-throughput processing of samples.01-15-2009
20090071830Systems and Methods for Isolating Nucleic Acids - A system for collecting target nucleic acids from a sample can include at least one sample chamber configured to receive a sample containing target nucleic acids and other material, at least one collection chamber removably mountable relative to the at least one sample chamber and configured to collect target nucleic acids separated from the other material, a filter removably mountable relative to the at least one sample chamber and configured to be disposed between the at least one sample chamber and the at least one collection chamber when the at least one collection chamber is mounted relative to the at least one sample chamber. The system may further include a pair of electrodes configured to generate an electric field sufficient to cause target nucleic acids in the at least one sample chamber to migrate via electrophoresis from the at least one sample chamber through the filter into the at least one collection chamber, wherein the filter may be configured to permit passage of target nucleic acids and to block passage of material of a size larger than the target nucleic acids.03-19-2009
20090321259Portable Preparation, Analysis, and Detection Apparatus for Nucleic Acid Processing - The present teachings comprise a device and method for lysing and/or purifying biological sample. The device can comprise a cartridge having a chamber containing a biological sample receiving region, a plurality of electrodes, and one or more sieving matrices. The electrodes can be configured to lyse the biological sample through the production of a pulsed electrical field. The electrodes can also be configured to heat lyse the biological sample. The electrodes can also be configured to electrophoretically move the biological sample through one or more sieving matrices. A portion of the sample can be isolated on a membrane. The portion of the sample isolated on the membrane can be amplified and detected. A portion of the sample can be isolated in a collection area present in the cartridge. The portion of the sample isolated in the collection area can be removed from the cartridge.12-31-2009
20100167293Digital Assay - The invention relates to methods and compositions for the detection of targets in a sample.07-01-2010

Patent applications by Charles S. Vann, El Granada, CA US

Charles S. Vann, El Dorado Hills, CA US

Patent application numberDescriptionPublished
20110177562Portable Preparation, Analysis, and Detection Apparatus for Nucleic Acid Processing - The present teachings comprise a device and method for lysing and/or purifying biological sample. The device can comprise a cartridge having a chamber containing a biological sample receiving region, a plurality of electrodes, and one or more sieving matrices. The electrodes can be configured to lyse the biological sample through the production of a pulsed electrical field. The electrodes can also be configured to heat lyse the biological sample. The electrodes can also be configured to electrophoretically move the biological sample through one or more sieving matrices. A portion of the sample can be isolated on a membrane. The portion of the sample isolated on the membrane can be amplified and detected. A portion of the sample can be isolated in a collection area present in the cartridge. The portion of the sample isolated in the collection area can be removed from the cartridge.07-21-2011