Patents Assigned to Qiagen North American Holdings
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Patent number: 10947527Abstract: The invention features reagents, methods and kits for the purification of RNA, or DNA, or both, from a sample.Type: GrantFiled: November 27, 2018Date of Patent: March 16, 2021Assignee: QIAGEN North American Holdings, IncInventors: Robert Jackson Bair, Kim Paulsen
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Patent number: 8598338Abstract: The present disclosure provides methods for isolating substantially pure and undegraded DNA from biological material via a solid support. The methods may use a DNA lysing solution that comprises a surfactant, a DNA-complexing salt (e.g., a lithium salt), and a buffer. Alternatively, the methods may use a solid support pre-treated with the DNA lysing solution.Type: GrantFiled: March 5, 2010Date of Patent: December 3, 2013Assignee: QIAGEN North American Holdings, Inc.Inventors: Robert Jackson Bair, Kristen Campbell Benedict, Wendy J. Kivens, Robert W. Kwiatkowski, Jr., Kim Paulsen, Daniel A. Strom, John M. Wages
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Patent number: 8192960Abstract: The invention provides one-component and two-component DNA polymerases, as well as kits comprising the same, and methods of using the same for nucleic amplification and nucleic acid sequencing.Type: GrantFiled: April 7, 2005Date of Patent: June 5, 2012Assignee: Qiagen North American HoldingsInventors: Lars-Erik Peters, Anna Ettinger
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Patent number: 7932059Abstract: Methods and compositions are provided for enhanced specificity and sensitivity of amplification reaction mixtures. Compositions in accordance with the present invention provide for reduced formation of primer-aggregates during amplification reactions. Reaction mixes include dNTPs, where a portion of the dNTPs has been replaced with an unconventional nucleotide, e.g., dUTP. Unconventional nucleotide concentrations are typically between 10% to 50% of the concentration of one of the standard dNTP. In some compositions the unconventional nucleotide is dUTP which replaces from about 10% to about 50% of the dTTP in the dNTP mix.Type: GrantFiled: February 4, 2005Date of Patent: April 26, 2011Assignee: Qiagen North American HoldingsInventors: Ryan Smith Westberry, Lars-Erik Peters, Jessica Jaclyn Greenlee
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Patent number: 7893228Abstract: Reagents, methods and kits for the purification of RNA from biological materials are provided.Type: GrantFiled: October 12, 2001Date of Patent: February 22, 2011Assignee: Qiagen North American Holdings, Inc.Inventors: Ellen M. Heath, John M. Wages, Jr.
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Patent number: 7863050Abstract: Methods and compositions are provided for gently lysing and solubilizing cells. Methods and compositions are further provided for quickly purifying high quality low molecular weight nucleic acid from host cells. Target cells are treated with a pre-chilled lysis solution having a zwitterionic detergent, for example n-Dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate, and a brief room-temperature incubation. Where nucleic acid purification is required, the lysis solution-treated cells are contacted with a nucleic acid capture matrix having an average pore size of at least about 1 ?m.Type: GrantFiled: January 22, 2009Date of Patent: January 4, 2011Assignee: Qiagen North American Holdings, Inc.Inventors: Michael J. Domanico, Matt Myers, Kristian Keane, Lisa R. Braun, Thomas Kolzau
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Patent number: 7790865Abstract: Eluting reagents and methods for isolating DNA from biological materials are provided.Type: GrantFiled: February 2, 1999Date of Patent: September 7, 2010Assignee: Qiagen North American Holdings, IncInventors: Ellen M. Heath, Ruth M. Shuman
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Patent number: 7776616Abstract: The present invention is an apparatus and method for purifying and isolating nucleic acid. The system uses one or more automated stations to perform steps of the method, including loading a sample onto a solid support in a processing container, purifying the sample, and isolating nucleic acid from the sample. A pump or vacuum may be used in the apparatus of the present invention for supplying fluids to the sample. A pump, vacuum or centrifuge may be used to separate impurities from the sample or to separate nucleic acid from the solid support. Exemplary solid supports and sample processing containers are disclosed.Type: GrantFiled: September 9, 2004Date of Patent: August 17, 2010Assignee: Qiagen North American Holdings, Inc.Inventors: Ellen M. Heath, Ruth M. Shuman
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Patent number: 7767804Abstract: Reagents, methods and kits for the purification of RNA from biological materials are provided.Type: GrantFiled: October 30, 2006Date of Patent: August 3, 2010Assignee: Qiagen North American Holdings, Inc.Inventors: Robert Jackson Bair, Jr., Ellen M. Heath, Heather Meehan, Kim Elayne Paulsen, John M. Wages, Jr.
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Publication number: 20100160619Abstract: Reagents, methods and kits for the purification of DNA from biological materials are provided.Type: ApplicationFiled: March 5, 2010Publication date: June 24, 2010Applicant: Qiagen North American Holdings, Inc.Inventors: Robert Jackson Bair, Kristen Campbell Benedict, Wendy J. Kivens, Robert W. Kwiatkowski, JR., Kim Paulsen, Daniel A. Strom, John M. Wages
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Patent number: 7670768Abstract: Processes for isolating, amplifying, and characterizing DNA from biological materials are provided. DNA is isolated by contacting a biological material on a solid support which is preferably pre-treated with a lysing reagent. The isolation process is simple and efficient and provides a source of purified DNA without the use of harmful organic solvents such as urea and guanidine-based solvents. The purified DNA and remaining fractions of biological material may be characterized or amplified as necessary.Type: GrantFiled: February 2, 1999Date of Patent: March 2, 2010Assignee: Qiagen North American Holdings, Inc.Inventors: Ellen M. Heath, Ruth M. Shuman
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Publication number: 20090246859Abstract: Methods and compositions are provided for gently lysing and solubilizing cells. Methods and compositions are further provided for quickly purifying high quality low molecular weight nucleic acid from host cells. Target cells are treated with a pre-chilled lysis solution having a zwitterionic detergent, for example n-Dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate, and a brief room-temperature incubation. Where nucleic acid purification is required, the lysis solution-treated cells are contacted with a nucleic acid capture matrix having an average pore size of at least about 1 ?m.Type: ApplicationFiled: January 22, 2009Publication date: October 1, 2009Applicant: Qiagen North American Holdings, Inc.Inventors: Michael J. Domanico, Matt Meyers, Kristian Keane, Lisa R. Braun, Thomas Kolzau
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Publication number: 20090226896Abstract: The invention provides Pol III ? mutants, and modified Pol III replicases comprising the same, and methods of using modified Pol III replicases for a variety of nucleic acid replication reactions.Type: ApplicationFiled: January 3, 2006Publication date: September 10, 2009Applicant: Qiagen North American Holdings, Inc.Inventor: Lars-Erik Peters
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Publication number: 20090017531Abstract: A method for isolating plasmids from suspended bacterial or yeast cells using a filter matrix, at least one lysing substance being added to the suspension and predamaging or completely lysing the predominant portion of the suspended cells, at least one conformation-altering substance being added to the suspension to alter the conformation of the plasmids to be isolated so as to promote retention of the cell components in or at the filter matrix. The suspension is thereupon moved through the filter matrix and the cells if not yet lysed then being lysed to completion upon contact with the filter matrix and the released plasmids being retained in or at the filter matrix.Type: ApplicationFiled: June 4, 2007Publication date: January 15, 2009Applicant: QIAGEN NORTH AMERICAN HOLDINGS, INC.Inventors: Thomas Kolzau, Wilhelm Pluster
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Patent number: 7340324Abstract: A mixing and pouring apparatus for computer controlled processing of mixing and pouring operations includes a rotatable arm capable of holding vessels therein, the arm rotatable at programmable speeds and time lengths to perform automated moving and pouring processes. The present invention further provides a cap and vessel positioning system that securely locks a vessel in place and realigns the cap in essentially the identical position in relation to the vessel every time the vessel is capped. In one embodiment, both the cap and vessel have flanges that are aligned when the cap is properly secured to the vessel.Type: GrantFiled: October 16, 2003Date of Patent: March 4, 2008Assignee: Qiagen North American Holdings, Inc.Inventors: Ellen M. Heath, Ruth Shuman, Douglas J. Kluge, Glenn M. Campbell
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Patent number: 7323310Abstract: Methods and compositions are provided for amplifying RNA from an RNA template. Methods and compositions are further provided for detecting an RNA in an RNA containing sample. Compositions used for the amplification of RNA from RNA include a RNA-dependent RNA-polymerase, a RNA helicase, and an energy source. Illustrative RNA-dependent RNA-polymerase enzymes are derived from the tomato or tobacco plant, while illustrative RNA helicase enzymes include the eIF4A and eIF4B proteins.Type: GrantFiled: August 31, 2005Date of Patent: January 29, 2008Assignee: Qiagen North American Holdings, Inc.Inventors: Lars-Erik Peters, Michael Domanico, Sven Buelow