Patents by Inventor Wayne M. Barnes

Wayne M. Barnes 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).

  • Publication number: 20240026315
    Abstract: Provided are mutant polymerases having DNA polymerase activity and reverse transcriptase activity or strand displacement activity, along with target nucleic acid amplification methods employing such mutant polymerases.
    Type: Application
    Filed: September 27, 2023
    Publication date: January 25, 2024
    Inventors: Wayne M. Barnes, Milko B. Kermekchiev, Zhian Zhang
  • Patent number: 11814655
    Abstract: Provided are mutant polymerases having DNA polymerase activity and reverse transcriptase activity or strand displacement activity, along with target nucleic acid amplification methods employing such mutant polymerases.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: November 14, 2023
    Assignee: DNA POLYMERASE TECHNOLOGY, INC.
    Inventors: Wayne M. Barnes, Milko B. Kermekchiev, Zhian Zhang
  • Publication number: 20210348142
    Abstract: Provided are mutant polymerases having DNA polymerase activity and reverse transcriptase activity or strand displacement activity, along with target nucleic acid amplification methods employing such mutant polymerases.
    Type: Application
    Filed: May 28, 2021
    Publication date: November 11, 2021
    Inventors: Wayne M. Barnes, Milko B. Kermekchiev, Zhian Zhang
  • Patent number: 11091745
    Abstract: Provided are mutant polymerases having DNA polymerase activity and reverse transcriptase activity or strand displacement activity, along with target nucleic acid amplification methods employing such mutant polymerases.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: August 17, 2021
    Assignee: DNA POLYMERASE TECHNOLOGY, INC.
    Inventors: Wayne M. Barnes, Milko B. Kermekchiev, Zhian Zhang
  • Publication number: 20180112195
    Abstract: Provided are mutant polymerases having DNA polymerase activity and reverse transcriptase activity or strand displacement activity, along with target nucleic acid amplification methods employing such mutant polymerases.
    Type: Application
    Filed: May 12, 2016
    Publication date: April 26, 2018
    Inventors: Wayne M. Barnes, Milko B. Kermekchiev, Zhian Zhang
  • Patent number: 9234226
    Abstract: Provided herein is a method for homologous end cloning using a 5?-exonuclease. One aspect provides a method of generating a recombinant DNA molecule comprising 5? exonuclease digestion of DNA molecules, exonuclease inactivation, annealing of 3? overhangs to form a annealed complex. Also provided is a method a method of generating a recombinant DNA molecule comprising 5? exonuclease digestion of DNA molecules, exonuclease inactivation, annealing of 3? overhangs to form a annealed complex, and extension of 3? ends to fill gaps corresponding to exonuclease removal to form a substantially non-gapped annealed complex. Also provided is a one reaction method in which no further additions need be made to the reaction mixture and the reaction mixture is only manipulated thereafter as to incubation time and incubation temperature. Complexes formed according to methods described herein can be transformed into a host cell without further in vitro processing.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: January 12, 2016
    Inventor: Wayne M. Barnes
  • Publication number: 20130252309
    Abstract: An isolated polypeptide having fast elongating polymerase activity. Also provided are kits containing the isolated polypeptide and isolated polynucleotides encoding the isolated polypeptide.
    Type: Application
    Filed: June 1, 2013
    Publication date: September 26, 2013
    Applicant: DNA Polymerase Technology Inc.
    Inventors: Milko B. Kermekchiev, Wayne M. Barnes
  • Publication number: 20110300583
    Abstract: Provided herein is a method for homologous end cloning using a 5?-exonuclease. One aspect provides a method of generating a recombinant DNA molecule comprising 5? exonuclease digestion of DNA molecules, exonuclease inactivation, annealing of 3? overhangs to form a annealed complex. Also provided is a method a method of generating a recombinant DNA molecule comprising 5? exonuclease digestion of DNA molecules, exonuclease inactivation, annealing of 3? overhangs to form a annealed complex, and extension of 3? ends to fill gaps corresponding to exonuclease removal to form a substantially non-gapped annealed complex. Also provided is a one reaction method in which no further additions need be made to the reaction mixture and the reaction mixture is only manipulated thereafter as to incubation time and incubation temperature. Complexes formed according to methods described herein can be transformed into a host cell without further in vitro processing.
    Type: Application
    Filed: October 14, 2009
    Publication date: December 8, 2011
    Inventor: Wayne M. Barnes
  • Patent number: 7855055
    Abstract: A formulation and kit of thermostable or other DNA polymerases comprising at least one thermostable or other DNA polymerase which lacks 3?-exonuclease activity, and at least one thermostable DNA polymerase exhibiting 3?-exonuclease activity. Also provided is an improved method for enzymatic extension of DNA strands, especially while, but not limited to, amplifying nucleic acid sequences by polymerase chain reaction wherein the above formulation is made and used to catalyze primer extension.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: December 21, 2010
    Assignee: Takara Shuzo Co., Ltd.
    Inventor: Wayne M. Barnes
  • Publication number: 20090148911
    Abstract: A formulation and kit of thermostable or other DNA polymerases comprising at least one thermostable or other DNA polymerase which lacks 3?-exonuclease activity, and at least one thermostable DNA polymerase exhibiting 3?-exonuclease activity. Also provided is an improved method for enzymatic extension of DNA strands, especially while, but not limited to, amplifying nucleic acid sequences by polymerase chain reaction wherein the above formulation is made and used to catalyze primer extension.
    Type: Application
    Filed: October 21, 2008
    Publication date: June 11, 2009
    Applicant: Takara Bio Inc.
    Inventor: Wayne M. Barnes
  • Patent number: 7465539
    Abstract: A formulation of thermostable or other DNA polymerases comprising (a) at least one thermostable or other DNA polymerase which lacks 3?-exonuclease activity, and (b) at least one thermostable DNA polymerase exhibiting 3?-exonuclease activity, wherein the ratio of (a) to (b) is greater than 1 to 1. Also provided is an improved method for enzymatic extension of DNA strands, especially while, but not limited to, amplifying nucleic acid sequences by polymerase chain reaction wherein the above formulation is made and used to catalyze primer extension, are also provided.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 16, 2008
    Assignee: Takara Bio, Inc.
    Inventor: Wayne M. Barnes
  • Patent number: 7462475
    Abstract: A method of obtaining DNA amplification of a nucleic acid target from a volume of whole blood comprising performing DNA amplification in a PCR assay mixture with a blood-resistant polymerase.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: December 9, 2008
    Assignee: DNA Poleymerase Technology, Inc.
    Inventors: Milko B. Kermekchiev, Wayne M. Barnes
  • Patent number: 7452665
    Abstract: A formulation and kit of thermostable or other DNA polymerases comprising at least one thermostable or other DNA polymerase which lacks 3?-exonuclease activity, and at least one thermostable DNA polymerase exhibiting 3?-exonuclease activity. Also provided is an improved method for enzymatic extension of DNA strands, especially while, but not limited to, amplifying nucleic acid sequences by polymerase chain reaction wherein the above formulation is made and used to catalyze primer extension.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: November 18, 2008
    Assignee: Takara Bio Inc.
    Inventor: Wayne M. Barnes
  • Publication number: 20030082567
    Abstract: The present invention provides a method of performing hot start PCR reactions. The method is based on sequestration of magnesium ions in the form of a precipitate which renders a DNA polymerase inactive until the appropriate time in the PCR reaction when a certain temperature is reached and the magnesium ions are released from the precipitate. Also provided are kits comprising reagents and instructions for amplifying a target nucleic acid by the magnesium precipitate hot start.
    Type: Application
    Filed: March 6, 2002
    Publication date: May 1, 2003
    Inventors: Wayne M. Barnes, Katherine R. Rowlyk
  • Publication number: 20030049634
    Abstract: A formulation and kit of thermostable or other DNA polymerases comprising at least one thermostable or other DNA polymerase which lacks 3′-exonuclease activity, and at least one thermostable DNA polymerase exhibiting 3′-exonuclease activity. Also provided is an improved method for enzymatic extension of DNA strands, especially while, but not limited to, amplifying nucleic acid sequences by polymerase chain reaction wherein the above formulation is made and used to catalyze primer extension.
    Type: Application
    Filed: October 17, 2001
    Publication date: March 13, 2003
    Applicant: Takara Shuzo Co., Ltd.
    Inventor: Wayne M. Barnes
  • Publication number: 20030027196
    Abstract: The present invention provides methods of performing enzymatic reactions which require the use of magnesium dependent enzymes, including restriction endonucleases, ligases, and reverse transcriptases. The method is based on sequestration of magnesium ions in the form of a precipitate which renders a magnesium dependent enzyme inactive until the appropriate time in the reaction when a certain temperature is reached and the magnesium ions are released from the precipitate. Also provided are kits comprising reagents and instructions for DNA digestion and ligation, and for reverse transcription of RNA into cDNA. Furthermore, the kits and reagents of the present invention can be utilized in other reactions requiring magnesium dependent enzymes.
    Type: Application
    Filed: August 2, 2002
    Publication date: February 6, 2003
    Inventors: Wayne M. Barnes, Katherine R. Rowlyk
  • Patent number: 6410277
    Abstract: A formulation and kit of thermostable or other DNA polymerases comprising at least one thermostable or other DNA polymerase which lacks 3′-exonuclease activity, and at least one thermostable DNA polymerase exhibiting 3′-exonuclease activity. Also provided is an improved method for enzymatic extension of DNA strands, especially while, but not limited to, amplifying nucleic acid sequences by polymerase chain reaction wherein the above formulation is made and used to catalyze primer extension.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: June 25, 2002
    Assignee: Takara Shuzo Co., Ltd.
    Inventor: Wayne M. Barnes
  • Patent number: 6403341
    Abstract: The present invention provides a method of performing hot start PCR reactions. The method is based on sequestration of magnesium ions in the form of a precipitate which renders a DNA polymerase inactive until the appropriate time in the PCR reaction when a certain temperature is reached and the magnesium ions are released from the precipitate. Also provided are kits comprising reagents and instructions for amplifying a target nucleic acid by the magnesium precipitate hot start.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: June 11, 2002
    Inventors: Wayne M. Barnes, Katherine R. Rowlyk
  • Publication number: 20020004203
    Abstract: Provided are mutant DNA polymerases having at least one mutation which exhibit substantially reduced polymerase activity at 25° C. when compared to the same DNA polymerases without the at least one mutation and which exhibit normal or near-normal polymerase activity at optimum temperatures when compared to the same DNA polymerases without the at least one mutation. Also provided are amino acid sequences and nucleic acid sequences encoding such DNA polymerases, and vector plasmids and host cells suitable for the expression of these sequences. Also described herein are improved methods for performing polymerase chain reaction (PCR) amplification and other genetic manipulations and analyses using the mutant DNA polymerases of the invention.
    Type: Application
    Filed: February 6, 2001
    Publication date: January 10, 2002
    Inventors: Wayne M. Barnes, Milko B. Kermekchiev
  • Patent number: 6333159
    Abstract: Provided are mutant DNA polymerases having at least one mutation which exhibit substantially reduced polymerase activity at 25° C. when compared to the same DNA polymerases without the at least one mutation and which exhibit normal or near-normal polymerase activity at optimum temperatures when compared to the same DNA polymerases without the at least one mutation. Also provided are amino acid sequences and nucleic acid sequences encoding such DNA polymerases, and vector plasmids and host cells suitable for the expression of these sequences. Also described herein are improved methods for performing polymerase chain reaction (PCR) amplification and other genetic manipulations and analyses using the mutant DNA polymerases of the invention.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: December 25, 2001
    Assignee: Washington University
    Inventors: Wayne M. Barnes, Milko B. Kermekchiev