Patents by Inventor William Bourn
William Bourn 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: 11932847Abstract: Disclosed is a method of fragmenting DNA comprising contacting a sample of target DNA with (a) a composition comprising an active transpososome, and (b) a composition comprising an inactive transpososome, under conditions suitable for transpososome activity, wherein a ratio of an amount of the inactive transpososome in the composition of (b) to an amount of the active transpososome in the composition of (a) determines the mean fragment size and a level of insertion bias.Type: GrantFiled: April 19, 2017Date of Patent: March 19, 2024Assignee: KAPA BIOSYSTEMS, INC.Inventors: Martin Ranik, Eric Van der Walt, William Bourn, Jennifer Hsieh, Abre De Beer, Gerrida Uys, Paul McEwan
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Patent number: 11746339Abstract: The present invention provides improved DNA polymerases that may be better suited for applications in recombinant DNA technologies, in particular technologies involving plant-derived samples. Among other things, the present invention provides modified DNA polymerases derived from directed evolution experiments designed to select mutations that confer advantageous phenotypes under conditions used in industrial or research applications.Type: GrantFiled: March 11, 2021Date of Patent: September 5, 2023Assignee: Kapa Biosystems, Inc.Inventors: Wolfgang Schafer, Paul J. McEwan, Eric van der Walt, John Foskett, William Bourn
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Patent number: 11603547Abstract: The present invention provides improved DNA polymerases, in particular, type A DNA polymerases, that may be better suited for applications in recombinant DNA technologies. Among other things, the present invention provides modified DNA polymerases derived from directed evolution experiments designed to select mutations that confer advantageous phenotypes under conditions used in industrial or research applications.Type: GrantFiled: February 22, 2021Date of Patent: March 14, 2023Assignee: Kapa Biosystems, Inc.Inventors: William Bourn, Maryke Appel, Gavin Rush, John Foskett, Paul J. McEwan
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Publication number: 20210317422Abstract: The present invention provides improved DNA polymerases that may be better suited for applications in recombinant DNA technologies, in particular technologies involving plant-derived samples. Among other things, the present invention provides modified DNA polymerases derived from directed evolution experiments designed to select mutations that confer advantageous phenotypes under conditions used in industrial or research applications.Type: ApplicationFiled: March 11, 2021Publication date: October 14, 2021Inventors: Wolfgang Schafer, Paul J. McEwan, Eric van der Walt, John Foskett, William Bourn
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Publication number: 20210180102Abstract: The present invention provides improved DNA polymerases, in particular, type A DNA polymerases, that may be better suited for applications in recombinant DNA technologies. Among other things, the present invention provides modified DNA polymerases derived from directed evolution experiments designed to select mutations that confer advantageous phenotypes under conditions used in industrial or research applications.Type: ApplicationFiled: February 22, 2021Publication date: June 17, 2021Inventors: William Bourn, Maryke Appel, Gavin Rush, John Foskett, Paul J. McEwan
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Patent number: 10975361Abstract: The present invention provides improved DNA polymerases that may be better suited for applications in recombinant DNA technologies, in particular technologies involving plant-derived samples. Among other things, the present invention provides modified DNA polymerases derived from directed evolution experiments designed to select mutations that confer advantageous phenotypes under conditions used in industrial or research applications.Type: GrantFiled: April 15, 2016Date of Patent: April 13, 2021Assignee: Kapa Biosystems, Inc.Inventors: Wolfgang Schafer, Paul McEwan, Eric Van Der Walt, John Foskett, William Bourn
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Patent number: 10961555Abstract: The present invention provides improved DNA polymerases, in particular, type A DNA polymerases, that may be better suited for applications in recombinant DNA technologies. Among other things, the present invention provides modified DNA polymerases derived from directed evolution experiments designed to select mutations that confer advantageous phenotypes under conditions used in industrial or research applications.Type: GrantFiled: May 3, 2018Date of Patent: March 30, 2021Assignee: Kapa Biosystems, Inc.Inventors: William Bourn, Maryke Appel, Gavin Rush, John Foskett, Paul J. McEwan
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Publication number: 20200347441Abstract: The disclosure provides compositions and methods for high-throughput screening a plurality of transposases to identify rare mutations that affect desired features of the transposase. Compositions of the disclosures are provided that facilitate the high-throughput screening methods of the disclosure.Type: ApplicationFiled: August 30, 2018Publication date: November 5, 2020Applicant: Kapa Biosystems, Inc.Inventors: Raeeza Allie, Michael Stuart Berry, William Bourn, Bjarne Faurholm, Suzanne Margaret Huddy, Martin Ranik, Du Toit Schabort
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Patent number: 10457968Abstract: The present invention provides improved DNA polymerases, in particular, type A DNA polymerases, that may be better suited for applications in recombinant DNA technologies. Among other things, the present invention provides modified DNA polymerases derived from directed evolution experiments designed to select mutations that confer advantageous phenotypes under conditions used in industrial or research applications.Type: GrantFiled: November 3, 2009Date of Patent: October 29, 2019Assignee: Kapa Biosystems, Inc.Inventors: William Bourn, Maryke Appel, Gavin Rush, John Foskett, Paul McEwan
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Publication number: 20190100783Abstract: The present invention provides improved DNA polymerases, in particular, type A DNA polymerases, that may be better suited for applications in recombinant DNA technologies. Among other things, the present invention provides modified DNA polymerases derived from directed evolution experiments designed to select mutations that confer advantageous phenotypes under conditions used in industrial or research applications.Type: ApplicationFiled: December 21, 2018Publication date: April 4, 2019Inventors: William Bourn, Maryke Appel, Gavin Rush, John Foskett, Paul J. McEwan
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Publication number: 20180195059Abstract: Disclosed is a method of fragmenting DNA comprising contacting a sample of target DNA with (a) a composition comprising an active transpososome, and (b) a composition comprising an inactive transpososome, under conditions suitable for transpososome activity, wherein a ratio of an amount of the inactive transpososome in the composition of (b) to an amount of the active transpososome in the composition of (a) determines the mean fragment size and a level of insertion bias.Type: ApplicationFiled: April 19, 2017Publication date: July 12, 2018Inventors: Martin RANIK, Eric VAN DER WALT, William BOURN, Jennifer HSIEH
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Publication number: 20170067037Abstract: The present invention provides improved DNA polymerases that may be better suited for applications in recombinant DNA technologies, in particular technologies involving plant-derived samples. Among other things, the present invention provides modified DNA polymerases derived from directed evolution experiments designed to select mutations that confer advantageous phenotypes under conditions used in industrial or research applications.Type: ApplicationFiled: April 15, 2016Publication date: March 9, 2017Inventors: Wolfgang Schafer, Paul McEwan, Eric Van Der Walt, John Foskett, William Bourn
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Publication number: 20170051326Abstract: The present invention provides improved DNA polymerases, in particular, type A DNA polymerases, that may be better suited for applications in recombinant DNA technologies. Among other things, the present invention provides modified DNA polymerases derived from directed evolution experiments designed to select mutations that confer advantageous phenotypes under conditions used in industrial or research applications.Type: ApplicationFiled: September 22, 2016Publication date: February 23, 2017Inventors: William Bourn, Maryke Appel, Gavin Rush, John Foskett, Paul J. McEwan
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Patent number: 9388396Abstract: The present invention provides, among other things, chimeric DNA polymerases containing heterologous domains having sequences derived from at least two DNA polymerases that have at least one distinct functional characteristics (e.g., elongation rate, processivity, error rate or fidelity, salt tolerance or resistance) and methods of making and using the same. In some embodiments, the present invention can combine desired functional characteristics (e.g., high processivity; high elongation rate; thermostability; resistance to salt, PCR additives (e.g., PCR enhancers) and other impurities; and high fidelity) of different DNA polymerases in a chimeric polymerase.Type: GrantFiled: May 5, 2014Date of Patent: July 12, 2016Assignee: Kapa Biosystems, Inc.Inventors: Bjarne Faurholm, Paul McEwan, William Bourn, Gavin Rush
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Patent number: 9315787Abstract: The present invention provides improved DNA polymerases that may be better suited for applications in recombinant DNA technologies, in particular technologies involving plant-derived samples. Among other things, the present invention provides modified DNA polymerases derived from directed evolution experiments designed to select mutations that confer advantageous phenotypes under conditions used in industrial or research applications.Type: GrantFiled: January 13, 2012Date of Patent: April 19, 2016Assignee: KAPA BIOSYSTEMS, INC.Inventors: Wolfgang Schafer, Paul McEwan, Eric Van Der Walt, John Foskett, William Bourn
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Patent number: 9023633Abstract: The present invention provides, among other things, chimeric DNA polymerases containing heterologous domains having sequences derived from at least two DNA polymerases that have at least one distinct functional characteristics (e.g., elongation rate, processivity, error rate or fidelity, salt tolerance or resistance) and methods of making and using the same. In some embodiments, the present invention can combine desired functional characteristics (e.g., high processivity; high elongation rate; thermostability; resistance to salt, PCR additives (e.g., PCR enhancers) and other impurities; and high fidelity) of different DNA polymerases in a chimeric polymerase.Type: GrantFiled: November 3, 2009Date of Patent: May 5, 2015Assignee: Kapa BiosystemsInventors: Bjarne Faurholm, Paul McEwan, William Bourn, Gavin Rush
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Publication number: 20140363848Abstract: The present invention provides, among other things, chimeric DNA polymerases containing heterologous domains having sequences derived from at least two DNA polymerases that have at least one distinct functional characteristics (e.g., elongation rate, processivity, error rate or fidelity, salt tolerance or resistance) and methods of making and using the same. In some embodiments, the present invention can combine desired functional characteristics (e.g., high processivity; high elongation rate; thermostability; resistance to salt, PCR additives (e.g., PCR enhancers) and other impurities; and high fidelity) of different DNA polymerases in a chimeric polymerase.Type: ApplicationFiled: May 5, 2014Publication date: December 11, 2014Applicant: KAPA BIOSYSTEMS, INC.Inventors: Bjarne FAURHOLM, Paul MCEWAN, William BOURN, Gavin RUSH
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Publication number: 20140030765Abstract: The present invention provides improved DNA polymerases that may be better suited for applications in recombinant DNA technologies, in particular technologies involving plant-derived samples. Among other things, the present invention provides modified DNA polymerases derived from directed evolution experiments designed to select mutations that confer advantageous phenotypes under conditions used in industrial or research applications.Type: ApplicationFiled: January 13, 2012Publication date: January 30, 2014Inventors: Wolfgang Schafer, Paul McEwan, Eric Van Der Walt, John Foskett, William Bourn
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Patent number: 8481685Abstract: The present invention provides, among other things, modified DNA polymerases containing amino acid alterations based on mutations identified in directed evolution experiments designed to select enzymes that are better suited for applications in recombinant DNA technologies.Type: GrantFiled: November 3, 2009Date of Patent: July 9, 2013Assignee: Kapa BiosystemsInventors: William Bourn, Bjarne Faurholm, John Foskett
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Publication number: 20120115188Abstract: The present invention provides, among other things, chimeric DNA polymerases containing heterologous domains having sequences derived from at least two DNA polymerases that have at least one distinct functional characteristics (e.g., elongation rate, processivity, error rate or fidelity, salt tolerance or resistance) and methods of making and using the same. In some embodiments, the present invention can combine desired functional characteristics (e.g., high processivity; high elongation rate; thermostability; resistance to salt, PCR additives (e.g., PCR enhancers) and other impurities; and high fidelity) of different DNA polymerases in a chimeric polymerase.Type: ApplicationFiled: November 3, 2009Publication date: May 10, 2012Applicant: KAPA BIOSYSTEMSInventors: Bjarne Faurholm, Paul McEwan, William Bourn, Gavin Rush