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).

  • Patent number: 11932847
    Abstract: 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: Grant
    Filed: April 19, 2017
    Date of Patent: March 19, 2024
    Assignee: KAPA BIOSYSTEMS, INC.
    Inventors: Martin Ranik, Eric Van der Walt, William Bourn, Jennifer Hsieh, Abre De Beer, Gerrida Uys, Paul McEwan
  • Patent number: 11746339
    Abstract: 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: Grant
    Filed: March 11, 2021
    Date of Patent: September 5, 2023
    Assignee: Kapa Biosystems, Inc.
    Inventors: Wolfgang Schafer, Paul J. McEwan, Eric van der Walt, John Foskett, William Bourn
  • Patent number: 11603547
    Abstract: 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: Grant
    Filed: February 22, 2021
    Date of Patent: March 14, 2023
    Assignee: Kapa Biosystems, Inc.
    Inventors: William Bourn, Maryke Appel, Gavin Rush, John Foskett, Paul J. McEwan
  • Publication number: 20210317422
    Abstract: 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: Application
    Filed: March 11, 2021
    Publication date: October 14, 2021
    Inventors: Wolfgang Schafer, Paul J. McEwan, Eric van der Walt, John Foskett, William Bourn
  • Publication number: 20210180102
    Abstract: 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: Application
    Filed: February 22, 2021
    Publication date: June 17, 2021
    Inventors: William Bourn, Maryke Appel, Gavin Rush, John Foskett, Paul J. McEwan
  • Patent number: 10975361
    Abstract: 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: Grant
    Filed: April 15, 2016
    Date of Patent: April 13, 2021
    Assignee: Kapa Biosystems, Inc.
    Inventors: Wolfgang Schafer, Paul McEwan, Eric Van Der Walt, John Foskett, William Bourn
  • Patent number: 10961555
    Abstract: 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: Grant
    Filed: May 3, 2018
    Date of Patent: March 30, 2021
    Assignee: Kapa Biosystems, Inc.
    Inventors: William Bourn, Maryke Appel, Gavin Rush, John Foskett, Paul J. McEwan
  • Publication number: 20200347441
    Abstract: 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: Application
    Filed: August 30, 2018
    Publication date: November 5, 2020
    Applicant: Kapa Biosystems, Inc.
    Inventors: Raeeza Allie, Michael Stuart Berry, William Bourn, Bjarne Faurholm, Suzanne Margaret Huddy, Martin Ranik, Du Toit Schabort
  • Patent number: 10457968
    Abstract: 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: Grant
    Filed: November 3, 2009
    Date of Patent: October 29, 2019
    Assignee: Kapa Biosystems, Inc.
    Inventors: William Bourn, Maryke Appel, Gavin Rush, John Foskett, Paul McEwan
  • Publication number: 20190100783
    Abstract: 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: Application
    Filed: December 21, 2018
    Publication date: April 4, 2019
    Inventors: William Bourn, Maryke Appel, Gavin Rush, John Foskett, Paul J. McEwan
  • Publication number: 20180195059
    Abstract: 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: Application
    Filed: April 19, 2017
    Publication date: July 12, 2018
    Inventors: Martin RANIK, Eric VAN DER WALT, William BOURN, Jennifer HSIEH
  • Publication number: 20170067037
    Abstract: 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: Application
    Filed: April 15, 2016
    Publication date: March 9, 2017
    Inventors: Wolfgang Schafer, Paul McEwan, Eric Van Der Walt, John Foskett, William Bourn
  • Publication number: 20170051326
    Abstract: 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: Application
    Filed: September 22, 2016
    Publication date: February 23, 2017
    Inventors: William Bourn, Maryke Appel, Gavin Rush, John Foskett, Paul J. McEwan
  • Patent number: 9388396
    Abstract: 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: Grant
    Filed: May 5, 2014
    Date of Patent: July 12, 2016
    Assignee: Kapa Biosystems, Inc.
    Inventors: Bjarne Faurholm, Paul McEwan, William Bourn, Gavin Rush
  • Patent number: 9315787
    Abstract: 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: Grant
    Filed: January 13, 2012
    Date of Patent: April 19, 2016
    Assignee: KAPA BIOSYSTEMS, INC.
    Inventors: Wolfgang Schafer, Paul McEwan, Eric Van Der Walt, John Foskett, William Bourn
  • Patent number: 9023633
    Abstract: 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: Grant
    Filed: November 3, 2009
    Date of Patent: May 5, 2015
    Assignee: Kapa Biosystems
    Inventors: Bjarne Faurholm, Paul McEwan, William Bourn, Gavin Rush
  • Publication number: 20140363848
    Abstract: 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: Application
    Filed: May 5, 2014
    Publication date: December 11, 2014
    Applicant: KAPA BIOSYSTEMS, INC.
    Inventors: Bjarne FAURHOLM, Paul MCEWAN, William BOURN, Gavin RUSH
  • Publication number: 20140030765
    Abstract: 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: Application
    Filed: January 13, 2012
    Publication date: January 30, 2014
    Inventors: Wolfgang Schafer, Paul McEwan, Eric Van Der Walt, John Foskett, William Bourn
  • Patent number: 8481685
    Abstract: 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: Grant
    Filed: November 3, 2009
    Date of Patent: July 9, 2013
    Assignee: Kapa Biosystems
    Inventors: William Bourn, Bjarne Faurholm, John Foskett
  • Publication number: 20120115188
    Abstract: 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: Application
    Filed: November 3, 2009
    Publication date: May 10, 2012
    Applicant: KAPA BIOSYSTEMS
    Inventors: Bjarne Faurholm, Paul McEwan, William Bourn, Gavin Rush