Patents by Inventor John M. Dzenitis
John M. Dzenitis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9480935Abstract: Systems and methods for separating particles and/or toxins from a sample fluid. A method according to one embodiment comprises simultaneously passing a sample fluid and a buffer fluid through a chamber such that a fluidic interface is formed between the sample fluid and the buffer fluid as the fluids pass through the chamber, the sample fluid having particles of interest therein; applying a force to the fluids for urging the particles of interest to pass through the interface into the buffer fluid; and substantially separating the buffer fluid from the sample fluid.Type: GrantFiled: February 1, 2008Date of Patent: November 1, 2016Assignee: Lawrence Livermore National Security, LLCInventors: Raymond P. Mariella, Jr., George M. Dougherty, John M. Dzenitis, Robin R. Miles, David S. Clague
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Patent number: 9372135Abstract: Provided herein are fluidics platforms and related methods for performing integrated sample collection and solid-phase extraction of a target component of the sample all in one tube. The fluidics platform comprises a pump, particles for solid-phase extraction and a particle-holding means. The method comprises contacting the sample with one or more reagents in a pump, coupling a particle-holding means to the pump and expelling the waste out of the pump while the particle-holding means retains the particles inside the pump. The fluidics platform and methods herein described allow solid-phase extraction without pipetting and centrifugation.Type: GrantFiled: September 8, 2011Date of Patent: June 21, 2016Assignee: Lawrence Livermore National Security, LLCInventors: W. Henry Benner, John M. Dzenitis
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Patent number: 8808643Abstract: Herein provided are fluidics platform and method for sample preparation and analysis. The fluidics platform is capable of analyzing DNA from blood samples using amplification assays such as polymerase-chain-reaction assays and loop-mediated-isothermal-amplification assays. The fluidics platform can also be used for other types of assays and analyzes. In some embodiments, a sample in a sealed tube can be inserted directly. The following isolation, detection, and analyzes can be performed without a user's intervention. The disclosed platform may also comprises a sample preparation system with a magnetic actuator, a heater, and an air-drying mechanism, and fluid manipulation processes for extraction, washing, elution, assay assembly, assay detection, and cleaning after reactions and between samples.Type: GrantFiled: September 8, 2011Date of Patent: August 19, 2014Assignee: Lawrence Livermore National Security, LLCInventors: W. Henry Benner, John M. Dzenitis, William J Benett, Brian R. Baker
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Patent number: 8778663Abstract: A thermalcycler includes a first thermalcycler body section having a first face and a second thermalcycler body section having a second face. A cavity is formed by the first face and the second face. A thermalcycling unit is positioned in the cavity. A heater trace unit is connected to a support section, to the first thermalcycler body section, to the second thermalcycler body section, and to the thermalcycling unit. The first thermalcycler body section and the second thermalcycler body section are positioned together against the support section to enclose the thermalcycling unit and the heater trace unit.Type: GrantFiled: September 18, 2007Date of Patent: July 15, 2014Assignee: Lawrence Livermore National Security, LLC.Inventors: William J. Benett, John T. Andreski, John M. Dzenitis, Anthony J. Makarewicz, Dean R. Hadley, Satinderpall S. Pannu
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Patent number: 8762068Abstract: Methods for determination of threshold values of signatures comprised in an assay are described. Each signature enables detection of a target. The methods determine a probability density function of negative samples and a corresponding false positive rate curve. A false positive criterion is established and a threshold for that signature is determined as a point at which the false positive rate curve intersects the false positive criterion. A method for quantitative analysis and interpretation of assay results together with a method for determination of a desired limit of detection of a signature in an assay are also described.Type: GrantFiled: October 28, 2009Date of Patent: June 24, 2014Assignee: Lawrence Livermore National Security, LLCInventors: Lance F. Bentley Tammero, John M. Dzenitis, Benjamin J. Hindson
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Patent number: 8494780Abstract: Methods to improve the performance of an array assay are described. A correlation between fluorescence intensity-related parameters and negative control values of the assay is determined. The parameters are then adjusted as a function of the correlation. As a result, sensitivity of the assay is improved without changes in its specificity.Type: GrantFiled: February 2, 2010Date of Patent: July 23, 2013Assignee: Lawrence Livermore National Security, LLCInventors: Lance F. Bentley Tammero, John M. Dzenitis, Benjamin J. Hindson
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Publication number: 20110022344Abstract: Methods to improve the performance of an array assay are described. A correlation between fluorescence intensity-related parameters and negative control values of the assay is determined. The parameters are then adjusted as a function of the correlation. As a result, sensitivity of the assay is improved without changes in its specificity.Type: ApplicationFiled: February 2, 2010Publication date: January 27, 2011Inventors: Lance F. Bentley TAMMERO, John M. Dzenitis, Benjamin J. Hindson
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Publication number: 20110021368Abstract: Methods for determination of threshold values of signatures comprised in an assay are described. Each signature enables detection of a target. The methods determine a probability density function of negative samples and a corresponding false positive rate curve. A false positive criterion is established and a threshold for that signature is determined as a point at which the false positive rate curve intersects the false positive criterion. A method for quantitative analysis and interpretation of assay results together with a method for determination of a desired limit of detection of a signature in an assay are also described.Type: ApplicationFiled: October 28, 2009Publication date: January 27, 2011Inventors: Lance F.Bentley TAMMERO, John M. DZENITIS, Benjamin J. HINDSON
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Publication number: 20090209030Abstract: A thermalcycler is constructing with a first thermalcycler body section of a flexible circuit material or a circuit board material. The first thermalcycler body section has a first face. A first cavity portion is formed in the first face. A second thermalcycler body section is constructed of a flexible circuit material or a circuit board material. The second thermalcycler body section has a second face. A second cavity portion is formed in the second face. When the first cavity portion and the second cavity portion are positioned together they form a cavity. A thermalcycler unit is positioned in the cavity. The first thermalcycler body section and the second thermalcycler body section are connected together with the first face and the face opposed to each other and the thermalcycler unit operatively connected to the first cavity portion and the second cavity portion.Type: ApplicationFiled: March 31, 2009Publication date: August 20, 2009Inventors: William J. Benett, James B. Richards, Paul L. Stratton, Elizabeth K. Wheeler, Peter Krulevitch, Steve Visuri, John M. Dzenitis
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Publication number: 20090194420Abstract: Systems and methods for separating particles and/or toxins from a sample fluid. A method according to one embodiment comprises simultaneously passing a sample fluid and a buffer fluid through a chamber such that a fluidic interface is formed between the sample fluid and the buffer fluid as the fluids pass through the chambers the sample fluid having particles of interest therein; applying a force to the fluids for urging the particles of interest to pass through the interface into the buffer fluid; and substantially separating the buffer fluid from the sample fluid.Type: ApplicationFiled: February 1, 2008Publication date: August 6, 2009Inventors: Raymond P. Mariella, JR., George M. Dougherty, John M. Dzenitis, Robin R. Miles, David S. Clague
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Publication number: 20090074628Abstract: A thermalcycler includes a first thermalcycler body section having a first face and a second thermalcycler body section having a second face. A cavity is formed by the first face and the second face. A thermalcycling unit is positioned in the cavity. A heater trace unit is connected to a support section, to the first thermalcycler body section, to the second thermalcycler body section, and to the thermalcycling unit. The first thermalcycler body section and the second thermalcycler body section are positioned together against the support section to enclose the thermalcycling unit and the heater trace unit.Type: ApplicationFiled: September 18, 2007Publication date: March 19, 2009Inventors: William J. Benett, John T. Andreski, John M. Dzenitis, Anthony J. Makarewicz, Dean R. Hadley, Satinderpall S. Pannu
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Patent number: 7413711Abstract: A dispensing system delivers a precise amount of fluid for biological or chemical processing and/or analysis. Dispensing means moves the fluid. The dispensing means is operated by a pneumatic force. Connection means delivers the fluid to the desired location. An actuator means provides the pneumatic force to the dispensing means. Valving means transmits the pneumatic force from the actuator means to the dispensing means.Type: GrantFiled: July 16, 2003Date of Patent: August 19, 2008Assignee: Lawrence Livermore National Security, LLCInventors: William J. Benett, Peter A. Krulevitch, Steven R. Visuri, John M. Dzenitis, Kevin D. Ness
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Patent number: 7412356Abstract: A method of detecting real events by obtaining a set of recent signal results, calculating measures of the noise or variation based on the set of recent signal results, calculating an expected baseline value based on the set of recent signal results, determining sample deviation, calculating an allowable deviation by multiplying the sample deviation by a threshold factor, setting an alarm threshold from the baseline value plus or minus the allowable deviation, and determining whether the signal results exceed the alarm threshold.Type: GrantFiled: January 30, 2007Date of Patent: August 12, 2008Assignee: Lawrence Livermore National Security, LLCInventors: John M. Dzenitis, Claudia K. Hertzog, Anthony J. Makarewicz, Bruce D. Henderer, Vincent J. Riot
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Publication number: 20080183433Abstract: A method of detecting real events by obtaining a set of recent signal results, calculating measures of the noise or variation based on the set of recent signal results, calculating an expected baseline value based on the set of recent signal results, determining sample deviation, calculating an allowable deviation by multiplying the sample deviation by a threshold factor, setting an alarm threshold from the baseline value plus or minus the allowable deviation, and determining whether the signal results exceed the alarm threshold.Type: ApplicationFiled: January 30, 2007Publication date: July 31, 2008Inventors: John M. Dzenitis, Claudia K. Hertzog, Anthony J. Makarewicz, Bruce D. Henderer, Vincent J. Riot
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Publication number: 20080025871Abstract: A system for maintaining a liquid slurry of microbeads for use in biological or chemical analysis comprising providing a flexible bag and filling the flexible bag with a slurry of a liquid and microbeads. One embodiment is an apparatus for maintaining liquid slurries of particles for use in biological or chemical analysis comprising a bag, a liquid contained within the bag, and particles contained within the liquid in the bag.Type: ApplicationFiled: July 27, 2006Publication date: January 31, 2008Inventors: John M. Dzenitis, Benjamin J. Hindson, Anthony J. Makarewicz, William J. Benett, Aaron M. Mason, Paul B. Haigh
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Patent number: 7090979Abstract: A method of making very long, double-stranded synthetic poly-nucleotides. A multiplicity of short oligonucleotides is provided. The short oligonucleotides are sequentially hybridized to each other. Enzymatic ligation of the oligonucleotides provides a contiguous piece of PCR-ready DNA of predetermined sequence.Type: GrantFiled: November 21, 2003Date of Patent: August 15, 2006Assignee: The Regents of the University of CaliforniaInventors: Raymond P. Mariella, Jr., Allen T. Christian, James D. Tucker, John M. Dzenitis, Alexandros P. Papavasiliou
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Publication number: 20040072334Abstract: A thermalcycler for processing a sample holder includes a first thermalcycler body with a first face and a second thermalcycler body with a second face. A cavity for receiving the sample holder is formed in at least one of the first face or the second face. A thermalcycling unit is operatively connected to the cavity.Type: ApplicationFiled: October 15, 2002Publication date: April 15, 2004Applicant: The Regents of the University of CaliforniaInventors: William J. Benett, James B. Richards, Paul L. Stratton, Elizabeth K. Wheeler, Peter Krulevitch, Steve Visuri, John M. Dzenitis
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Publication number: 20010018536Abstract: This invention is directed to an improved process for the preparation of N-(phosphonomethyl)glycine (i.e., “glyphosate”), a salt of N-(phosphonomethyl)glycine, or an ester of N-(phosphonomethyl)glycine. The process comprises combining an N-substituted N-(phosphonomethyl)glycine reactant with oxygen in the presence of a noble metal catalyst.Type: ApplicationFiled: February 5, 2001Publication date: August 30, 2001Inventors: David A. Morgenstern, David E. McKenzie, Robert Orth, David Oburn, Cindy Ludwig, Kam-To Wan, John M. Dzenitis
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Patent number: 6232494Abstract: This invention is directed to an improved process for the preparation of N-(phosphonomethyl)glycine (i.e., “glyphosate”), a salt of N-(phosphonomethyl)glycine, or an ester of N-(phosphonomethyl)glycine. The process comprises combining an N-substituted N-(phosphonomethyl)glycine reactant with oxygen in the presence of a noble metal catalyst. The N-substituted N-(phosphonomethyl)glycine reactant has formula (V): wherein R1 and R2 are independently selected from the group consisting of hydrogen, halogen, —PO3R12R131, —SO3R14, —NO2, hydrocarbyl, and substituted hydrocarbyl other than —CO2R15; and R7, R8, R9, R12, R13, R14, and R15 are independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl, and an agronomically acceptable cation.Type: GrantFiled: March 5, 1999Date of Patent: May 15, 2001Assignee: Monsanto CompanyInventors: David A. Morgenstern, David E. McKenzie, Robert Orth, David Oburn, Cindy Ludwig, Kam-to Wan, John M. Dzenitis
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Patent number: 5279482Abstract: A bola body, a bola, and methods employing such bola bodies and bolas; in one aspect a bola body having a non-spherical body member from which extend one or more fingers for entanglement with a bola line, with each other, or for latching onto part of a target body.Type: GrantFiled: June 5, 1992Date of Patent: January 18, 1994Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: John M. Dzenitis, Linda W. Billica