Patents by Inventor Milko B. Kermekchiev

Milko B. Kermekchiev 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: 20230143626
    Abstract: Amino acid substitutions that provide for increased elongation rates, resistance to PCR inhibitors, and reverse transcriptase activity of Thermus aquaticus (Taq) DNA polymerase enzymes are provided. Also provided are related methods of using the Taq DNA polymerase enzymes to rapidly detect nucleic acids of interest in crude biological samples, without DNA/RNA extraction.
    Type: Application
    Filed: October 10, 2022
    Publication date: May 11, 2023
    Inventors: 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: 20210147908
    Abstract: Provided herein are mutant polymerase enzymes resistant to inhibitors encountered in Polymerase Chain Reactions (PCR). Also provided are nucleic acids or constructs encoding isolated polypeptides having polymerase activity. Also provided are kits useful for PCR containing isolated polypeptides having polymerase activity or isolated nucleic acids encoding such.
    Type: Application
    Filed: June 15, 2020
    Publication date: May 20, 2021
    Inventors: Milko B. Kermekchiev, Zhian Zhang
  • Patent number: 10683537
    Abstract: Provided herein are mutant polymerase enzymes resistant to inhibitors encountered in Polymerase Chain Reactions (PCR). Also provided are nucleic acids or constructs encoding isolated polypeptides having polymerase activity. Also provided are kits useful for PCR containing isolated polypeptides having polymerase activity or isolated nucleic acids encoding such.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: June 16, 2020
    Assignee: DNA Polymerase Technology, Inc.
    Inventors: 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
  • Publication number: 20140113299
    Abstract: Provided herein are mutant polymerase enzymes resistant to inhibitors encountered in Polymerase Chain Reactions (PCR). Also provided are nucleic acids or constructs encoding isolated polypeptides having polymerase activity. Also provided are kits useful for PCR containing isolated polypeptides having polymerase activity or isolated nucleic acids encoding such.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 24, 2014
    Applicant: DNA Polymerase Technology, Inc.
    Inventors: Milko B. Kermekchiev, Zhian Zhang
  • 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
  • Patent number: 8470563
    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 8, 2008
    Date of Patent: June 25, 2013
    Assignee: DNA Polymerase Technology Inc.
    Inventors: Milko B. Kermekchiev, Wayne Morris Barnes
  • Publication number: 20110027832
    Abstract: The present invention generally relates to detection of a target nucleic acid in standard PCR, real-time PCR, RT PCR, and real-time RT PCR. One aspect of the invention provides mutant DNA polymerase enzymes that are resistant to PCR inhibitors, such as dye, blood, and soil. Another aspect of the invention provides for methods of real-time PCR assays using mutant DNA polymerase enzymes resistant to PCR inhibitors with samples containing dye, blood, and/or soil. Another aspect of the invention provides for methods of standard PCR assays using mutant DNA polymerase enzymes resistant to PCR inhibitors with samples containing blood and/or soil.
    Type: Application
    Filed: March 16, 2009
    Publication date: February 3, 2011
    Applicant: DNA POLYMERASE TECHNOLOGY INC.
    Inventors: Milko B. Kermekchiev, Lyubka Kirilova, Zhian Zhang
  • Publication number: 20090170060
    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: Application
    Filed: December 8, 2008
    Publication date: July 2, 2009
    Applicant: DNA POLYMERASE TECHNOLOGY INC.
    Inventors: Milko B. Kermekchiev, Wayne Morris 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
  • 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
  • Patent number: 6316202
    Abstract: Provided are mutant DNA polymerase having at least one mutation which exhibit substantially reduced polymerase activity at 25° C. When compared to the same DNA polymerase without the at least one mutation and which exhibit normal or near-normal polymerase activity at optimum temperatures when compared to the same DNA polymerase without the at least one mutation. Also provided are amino acid sequences and nucleic acid sequences encoding such DNA polymerase, 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 polymerase of the invention.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: November 13, 2001
    Assignee: Washington University
    Inventors: Wayne M. Barnes, Milko B. Kermekchiev
  • Patent number: 6214557
    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: June 6, 2000
    Date of Patent: April 10, 2001
    Assignee: Washington University
    Inventors: Wayne M. Barnes, Milko B. Kermekchiev