Patents by Inventor Ayoub Rashtchian

Ayoub Rashtchian 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: 20210017575
    Abstract: Method and compositions for improving DNA polymerase and reverse transcriptase reactions are provided. Addition of anti-foam reagents to the reactions improves fluid handling, especially of small volumes and allows enhanced accuracy of optical detection, without substantially inhibiting enzymatic activity.
    Type: Application
    Filed: August 11, 2020
    Publication date: January 21, 2021
    Inventors: Ayoub Rashtchian, David M. Schuster
  • Publication number: 20190024167
    Abstract: The present invention provides novel primers and methods for the detection of specific nucleic acid sequences. The primers and methods of the invention are useful in a wide variety of molecular biology applications and are particularly useful in allele specific PCR.
    Type: Application
    Filed: June 28, 2018
    Publication date: January 24, 2019
    Inventors: Irina Nazarenko, Ayoub Rashtchian, Joseph Solus, Richard M. Pires, Marlene Darfler, Gulilat Gebeyehu, Mekbib Astatke
  • Patent number: 10041117
    Abstract: The present invention provides novel primers and methods for the detection of specific nucleic acid sequences. The primers and methods of the invention are useful in a wide variety of molecular biology applications and are particularly useful in allele specific PCR.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: August 7, 2018
    Assignee: LIFE TECHNOLOGIES CORPORATION
    Inventors: Irina Nazarenko, Ayoub Rashtchian, Joseph Solus, Richard M. Pires, Marlene Darfler, Gulilat Gebeyehu, Mekbib Astatke
  • Patent number: 9988660
    Abstract: Methods for making eDNA molecules, for amplification of RNA by PCR and for preparation of cDNA libraries are provided. Kits for making eDNA molecules also are provided. Compositions are also provided comprising mixtures of reagents, including reverse transcriptases, buffers, cofactors and other components, suitable for immediate use in conversion of RNA into eDNA and RT PCR without dilution or addition of further components. These compositions are useful, alone or in the form of kits, for eDNA synthesis or nucleic acid amplification (e.g., by the Polymerase Chain Reaction) or for any procedure utilizing reverse transcriptases in a variety of research, medical, diagnostic, forensic and agricultural applications.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: June 5, 2018
    Assignee: QUANTA BIOSCIENCES
    Inventors: Ayoub Rashtchian, David Schuster
  • Patent number: 9873901
    Abstract: The present invention is directed to compositions and methods useful for the amplification of nucleic acid molecules by reverse transcriptase-polymerase chain reaction (RT-PCR). Specifically, the invention provides compositions and methods for the amplification of nucleic acid molecules in a simplified one- or two-step RT-PCR procedure using combinations of reverse transcriptase and thermostable DNA polymerase enzymes in conjunction with sulfur-containing molecules or acetate-containing molecules (or combinations of such sulfur-containing molecules and acetate-containing molecules), and optionally bovine serum albumin. The invention thus facilitates the rapid and efficient amplification of nucleic acid molecules and the detection and quantitation of RNA molecules. The invention also is useful in the rapid production and amplification of cDNAs which may be used for a variety of industrial, medical and forensic purposes.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: January 23, 2018
    Assignee: LIFE TECHNOLOGIES CORPORATION
    Inventors: Jun Lee, Ayoub Rashtchian
  • Patent number: 9556466
    Abstract: The present invention is directed to compositions and methods useful for the amplification of nucleic acid molecules by reverse transcriptase-polymerase chain reaction (RT-PCR). Specifically, the invention provides compositions and methods for the amplification of nucleic acid molecules in a simplified one- or two-step RT-PCR procedure using combinations of reverse transcriptase and thermostable DNA polymerase enzymes in conjunction with sulfur-containing molecules or acetate-containing molecules (or combinations of such sulfur-containing molecules and acetate-containing molecules), and optionally bovine serum albumin. The invention thus facilitates the rapid and efficient amplification of nucleic acid molecules and the detection and quantitation of RNA molecules. The invention also is useful in the rapid production and amplification of cDNAs which may be used for a variety of industrial, medical and forensic purposes.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: January 31, 2017
    Assignee: LIFE TECHNOLOGIES CORPORATION
    Inventors: Jun Lee, Ayoub Rashtchian
  • Publication number: 20160108466
    Abstract: The present invention provides novel primers and methods for the detection of specific nucleic acid sequences. The primers and methods of the invention are useful in a wide variety of molecular biology applications and are particularly useful in allele specific PCR.
    Type: Application
    Filed: September 18, 2015
    Publication date: April 21, 2016
    Inventors: IRINA NAZARENKO, AYOUB RASHTCHIAN
  • Publication number: 20160046975
    Abstract: Methods for making cDNA molecules, for amplification of RNA by PCR and for preparation of cDNA libraries are provided. Kits for making cDNA molecules also are provided. Compositions are also provided comprising mixtures of reagents, including reverse transcriptases, buffers, cofactors and other components, suitable for immediate use in conversion of RNA into cDNA and RT PCR without dilution or addition of further components. These compositions are useful, alone or in the form of kits, for cDNA synthesis or nucleic acid amplification (e.g., by the Polymerase Chain Reaction) or for any procedure utilizing reverse transcriptases in a variety of research, medical, diagnostic, forensic and agricultural applications.
    Type: Application
    Filed: October 8, 2015
    Publication date: February 18, 2016
    Inventors: Ayoub Rashtchian, David Schuster
  • Publication number: 20150050660
    Abstract: The present invention is directed to compositions comprising mixtures of reagents, including thermostable enzymes (e.g., thermostable DNA polymerases), buffers, cofactors and other components, suitable for immediate use in nucleic acid amplification or sequencing techniques without dilution or addition of further components. The compositions contain no stablizing agents (e.g., glycerol or serum albumin) and unexpectedly maintain activity for extended periods of time upon storage at temperatures above freezing. These compositions are useful, alone or in the form of kits, for nucleic acid amplification (e.g., by the Polymerase Chain Reaction) and sequencing (e.g., by dideoxy or “Sanger” sequencing), or for any procedure utilizing thermostable DNA polymerases in a variety of medical, forensic and agricultural applications. In particular, the compositions and methods are useful for amplifying and sequencing nucleic acid molecules that are larger than about 7 kilobases in size.
    Type: Application
    Filed: August 22, 2014
    Publication date: February 19, 2015
    Inventors: Ayoub RASHTCHIAN, Joseph Solus
  • Publication number: 20150037792
    Abstract: The present invention provides novel primers and methods for the detection of specific nucleic acid sequences. The primers and methods of the invention are useful in a wide variety of molecular biology applications and are particularly useful in allele specific PCR.
    Type: Application
    Filed: July 11, 2014
    Publication date: February 5, 2015
    Inventors: Irina Nazarenko, Ayoub Rashtchian, Joseph Solus, Richard M. Pires, Marlene Darfler, Gulilat Gebeyehu, Mekbib Astatke
  • Publication number: 20150017688
    Abstract: The present invention is directed to compositions and methods useful for the amplification of nucleic acid molecules by reverse transcriptase-polymerase chain reaction (RT-PCR). Specifically, the invention provides compositions and methods for the amplification of nucleic acid molecules in a simplified one- or two-step RT-PCR procedure using combinations of reverse transcriptase and thermostable DNA polymerase enzymes in conjunction with sulfur-containing molecules or acetate-containing molecules (or combinations of such sulfur-containing molecules and acetate-containing molecules), and optionally bovine serum albumin. The invention thus facilitates the rapid and efficient amplification of nucleic acid molecules and the detection and quantitation of RNA molecules. The invention also is useful in the rapid production and amplification of cDNAs which may be used for a variety of industrial, medical and forensic purposes.
    Type: Application
    Filed: September 26, 2014
    Publication date: January 15, 2015
    Inventors: Jun LEE, Ayoub RASHTCHIAN
  • Patent number: 8741560
    Abstract: The present invention is directed to compositions comprising mixtures of reagents, including thermostable enzymes (e.g., thermostable DNA polymerases), buffers, cofactors and other components, suitable for immediate use in nucleic acid amplification or sequencing techniques without dilution or addition of further components. The compositions contain no stabilizing agents (e.g., glycerol or serum albumin) and unexpectedly maintain activity for extended periods of time upon storage at temperatures above freezing. These compositions are useful, alone or in the form of kits, for nucleic acid amplification (e.g., by the Polymerase Chain Reaction) and sequencing (e.g., by dideoxy or “Sanger” sequencing), or for any procedure utilizing thermostable DNA polymerases in a variety of medical, forensic and agricultural applications. In particular, the compositions and methods are useful for amplifying and sequencing nucleic acid molecules that are larger than about 7 kilobases in size.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: June 3, 2014
    Assignee: Life Technologies Corporation
    Inventors: Ayoub Rashtchian, Joseph Solus
  • Publication number: 20130252239
    Abstract: The present invention provides novel primers and methods for the detection of specific nucleic acid sequences. The primers and methods of the invention are useful in a wide variety of molecular biology applications and are particularly useful in allele specific PCR.
    Type: Application
    Filed: January 28, 2013
    Publication date: September 26, 2013
    Applicant: Life Technologies Corporation
    Inventors: Irina Nazarenko, Ayoub Rashtchian, Joseph Solus, Richard M. Pires, Marlene Darfler, Gulilat Gebeyehu, Mekbib Astatke
  • Publication number: 20130244286
    Abstract: Methods for making cDNA molecules, for amplification of RNA by PCR and for preparation of cDNA libraries are provided. Kits for making cDNA molecules also are provided. Compositions are also provided comprising mixtures of reagents, including reverse transcriptases, buffers, cofactors and other components, suitable for immediate use in conversion of RNA into cDNA and RT PCR without dilution or addition of further components. These compositions are useful, alone or in the form of kits, for cDNA synthesis or nucleic acid amplification (e.g., by the Polymerase Chain Reaction) or for any procedure utilizing reverse transcriptases in a variety of research, medical, diagnostic, forensic and agricultural applications.
    Type: Application
    Filed: March 4, 2013
    Publication date: September 19, 2013
    Applicant: QUANTA BIOSCIENCES, INC.
    Inventors: Ayoub Rashtchian, David Schuster
  • Publication number: 20130149698
    Abstract: The present invention is directed to compositions comprising mixtures of reagents, including thermostable enzymes (e.g., thermostable DNA polymerases), buffers, cofactors and other components, suitable for immediate use in nucleic acid amplification or sequencing techniques without dilution or addition of further components. The compositions contain no stablizing agents (e.g., glycerol or serum albumin) and unexpectedly maintain activity for extended periods of time upon storage at temperatures above freezing. These compositions are useful, alone or in the form of kits, for nucleic acid amplification (e.g., by the Polymerase Chain Reaction) and sequencing (e.g., by dideoxy or “Sanger” sequencing), or for any procedure utilizing thermostable DNA polymerases in a variety of medical, forensic and agricultural applications. In particular, the compositions and methods are useful for amplifying and sequencing nucleic acid molecules that are larger than about 7 kilobases in size.
    Type: Application
    Filed: January 6, 2012
    Publication date: June 13, 2013
    Applicant: LIFE TECHNOLOGIES CORPORATION
    Inventors: AYOUB RASHTCHIAN, JOSEPH SOLUS
  • Patent number: 8420324
    Abstract: Methods for making cDNA molecules, for amplification of RNA by PCR and for preparation of cDNA libraries are provided. Kits for making cDNA molecules also are provided. Compositions are also provided comprising mixtures of reagents, including reverse transcriptases, buffers, cofactors and other components, suitable for immediate use in conversion of RNA into cDNA and RT PCR without dilution or addition of further components. These compositions are useful, alone or in the form of kits, for cDNA synthesis or nucleic acid amplification (e.g., by the Polymerase Chain Reaction) or for any procedure utilizing reverse transcriptases in a variety of research, medical, diagnostic, forensic and agricultural applications.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: April 16, 2013
    Assignee: Quanta Biosciences
    Inventors: Ayoub Rashtchian, David Schuster
  • Patent number: 8394609
    Abstract: The present invention provides novel primers and methods for the detection of specific nucleic acid sequences. The primers and methods of the invention are useful in a wide variety of molecular biology applications and are particularly useful in allele specific PCR.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: March 12, 2013
    Assignee: Life Technologies Corporation
    Inventors: Irina Nazarenko, Ayoub Rashtchian, Joseph Solus, Richard Pires, Marlene Darfler, Gulilat Gebeyehu, Mekbib Astatke
  • Patent number: 8372604
    Abstract: The present invention is directed to compositions and methods useful for the amplification of nucleic acid molecules by reverse transcriptase-polymerase chain reaction (RT-PCR). Specifically, the invention provides compositions and methods for the amplification of nucleic acid molecules in a simplified one- or two-step RT-PCR procedure using combinations of reverse transcriptase and thermostable DNA polymerase enzymes in conjunction with sulfur-containing molecules or acetate-containing molecules (or combinations of such sulfur-containing molecules and acetate-containing molecules), and optionally bovine serum albumin. The invention thus facilitates the rapid and efficient amplification of nucleic acid molecules and the detection and quantitation of RNA molecules. The invention also is useful in the rapid production and amplification of cDNAs which may be used for a variety of industrial, medical and forensic purposes.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: February 12, 2013
    Assignee: Life Technologies Corporation
    Inventors: Jun Lee, Ayoub Rashtchian
  • Publication number: 20120142007
    Abstract: The present invention is directed to compositions comprising mixtures of reagents, including thermostable enzymes (e.g., thermostable DNA polymerases), buffers, cofactors and other components, suitable for immediate use in nucleic acid amplification or sequencing techniques without dilution or addition of further components. The compositions contain no stablizing agents (e.g., glycerol or serum albumin) and unexpectedly maintain activity for extended periods of time upon storage at temperatures above freezing. These compositions are useful, alone or in the form of kits, for nucleic acid amplification (e.g., by the Polymerase Chain Reaction) and sequencing (e.g., by dideoxy or “Sanger” sequencing), or for any procedure utilizing thermostable DNA polymerases in a variety of medical, forensic and agricultural applications. In particular, the compositions and methods are useful for amplifying and sequencing nucleic acid molecules that are larger than about 7 kilobases in size.
    Type: Application
    Filed: January 6, 2012
    Publication date: June 7, 2012
    Applicant: LIFE TECHNOLOGIES CORPORATION
    Inventors: Ayoub Rashtchian, Joseph Solus
  • Patent number: 8124340
    Abstract: Improved methods of studying RNA molecules are provided. In particular, methods of treating mixtures of RNA molecules so as to enrich the mixture for a desired type of RNA molecule are provided. For example, the methods permit depletion of mRNA from complex mixtures to facilitate study of microRNAs in the mixture.
    Type: Grant
    Filed: January 23, 2010
    Date of Patent: February 28, 2012
    Assignee: Quanta Biosciences
    Inventor: Ayoub Rashtchian