Patents by Inventor Amar P. Gupta

Amar P. Gupta 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: 8658366
    Abstract: Methods, reaction mixtures and systems for detecting the presence or absence of a target nucleic acid variant from a selection of possible variants is described.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: February 25, 2014
    Assignee: Roche Molecular Systems, Inc.
    Inventors: Stephen Gordon Will, Amar P. Gupta, Laura Geyer
  • Patent number: 8222003
    Abstract: This invention provides compositions and methods for HCV typing, e.g., genotyping and/or subtyping. The compositions and methods of the invention can be used to assign an HCV isolate to one of at least five HCV genotypes (for example, selected from genotypes 1, 2, 3, 4, 5 or 6), or assign an HCV isolate to one of at least six subtypes (for example, selected from subtypes 1a/b/c, 2a/c, 2b, 3a, 4a, 5a or 6a), where the methods of the invention use only a single typing probe to make the HCV type assignment.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: July 17, 2012
    Assignee: Roche Molecular Systems, Inc.
    Inventors: Amar P Gupta, Stephen Gordon Will
  • Patent number: 8163484
    Abstract: The present invention relates to methods and reagents for modifying the emission of light from labeled nucleic acids for the purpose of real time detection, analysis, and quantitation of nucleic acid sequences, e.g., using singly labeled probes. These methods and reagents exploit advantageous properties of thiazine dyes and diazine dyes. Furthermore, the use of these light emission modifiers in background reduction, nucleic acid duplex stabilization and other uses is also described. Related kits, reaction mixtures and integrated systems are described.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: April 24, 2012
    Assignee: Roche Molecular Systems, Inc.
    Inventors: Amar P. Gupta, Stephen G. Will
  • Publication number: 20120070820
    Abstract: This invention provides compositions and methods for HCV typing, e.g., genotyping and/or subtyping. The compositions and methods of the invention can be used to assign an HCV isolate to one of at least five HCV types (for example, selected from types 1, 2, 3, 4, 5 or 6), or to one of at least five subtypes (for example, subtypes 1a/b/c, 2a/c, 2b, 3a, 4a, 5a or 6a). These methods integrate the hybridization data from a plurality of HCV typing probes in a multidimensional analysis to make an HCV type assignment for an HCV in an experimental sample. The invention also provides related compositions, including, for example, the HCV typing probes and HCV typing diagnostic kits.
    Type: Application
    Filed: October 7, 2011
    Publication date: March 22, 2012
    Applicant: ROCHE MOLECULAR SYSTEMS, INC.
    Inventors: Amar P. Gupta, Stephen Gordon Will
  • Patent number: 8119346
    Abstract: The present invention relates to methods and reagents for modifying the emission of light from labeled nucleic acids for the purpose of real time detection, analysis, and quantitation of nucleic acid sequences, e.g., using singly labeled probes. These methods and reagents exploit advantageous properties of thiazine dyes and diazine dyes. Furthermore, the use of these light emission modifiers in background reduction, nucleic acid duplex stabilization and other uses is also described. Related kits, reaction mixtures and integrated systems are described.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: February 21, 2012
    Assignee: Roche Molecular Systems, Inc.
    Inventors: Amar P. Gupta, Stephen G. Will
  • Patent number: 8114595
    Abstract: The present invention relates to methods and reagents for modifying the emission of light from labeled nucleic acids for the purpose of real time detection, analysis, and quantitation of nucleic acid sequences, e.g., using singly labeled probes. These methods and reagents exploit advantageous properties of thiazine dyes and diazine dyes. Furthermore, the use of these light emission modifiers in background reduction, nucleic acid duplex stabilization and other uses is also described. Related kits, reaction mixtures and integrated systems are described.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: February 14, 2012
    Assignee: Roche Molecular Systems, Inc.
    Inventors: Amar P. Gupta, Stephen Gordon Will
  • Patent number: 8067208
    Abstract: This invention provides compositions and methods for HCV typing, e.g., genotyping and/or subtyping. The compositions and methods of the invention can be used to assign an HCV isolate to one of at least five HCV types (for example, selected from types 1, 2, 3, 4, 5 or 6), or to one of at least five subtypes (for example, subtypes 1a/b/c, 2a/c, 2b, 3a, 4a, 5a or 6a). These methods integrate the hybridization data from a plurality of HCV typing probes in a multidimensional analysis to make an HCV type assignment for an HCV in an experimental sample. The invention also provides related compositions, including, for example, the HCV typing probes and HCV typing diagnostic kits.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: November 29, 2011
    Assignee: Roche Molecular Systems, Inc.
    Inventors: Amar P. Gupta, Stephen Gordon Will
  • Patent number: 7977108
    Abstract: The present invention provides methods and probe nucleic acids for detecting mutant forms of target nucleic acids that comprise repetitive nucleotide sequences. In certain embodiments, for example, these approaches and reagents can be used to detect instability in regions of genomic DNA that include microsatellite markers. The invention also provides related reaction mixtures, systems, and kits.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: July 12, 2011
    Assignee: Roche Molecular Systems, Inc.
    Inventors: Christopher D. Newhouse, Stephen Gordon Will, Amar P. Gupta
  • Patent number: 7928207
    Abstract: The invention provides methods of producing blocked oligonucleotides that include 2?-terminator nucleotides. These blocked oligonucleotides are used primers and probes in a variety of nucleic acid technologies. Related kits are also provided.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: April 19, 2011
    Assignee: Roche Molecular Systems, Inc
    Inventors: Veeraiah Bodepudi, Amar P. Gupta, Stephen G. Will
  • Patent number: 7919242
    Abstract: The present invention relates to methods and reagents for modifying the emission of light from labeled nucleic acids for the purpose of real time detection, analysis, and quantitation of nucleic acid sequences, e.g., using singly labeled probes. These methods and reagents exploit advantageous properties of thiazine dyes and diazine dyes. Furthermore, the use of these light emission modifiers in background reduction, nucleic acid duplex stabilization and other uses is also described. Related kits, reaction mixtures and integrated systems are described.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: April 5, 2011
    Assignee: Roche Molecular Systems, Inc.
    Inventors: Amar P. Gupta, Stephen Gordon Will
  • Patent number: 7745125
    Abstract: The present invention provides reaction mixtures that include blocked oligonucleotides comprising 2?-terminator nucleotides. The blocked oligonucleotides are rendered extendible when the 2?-terminator nucleotides are removed from the oligonucleotides, e.g., via pyrophosphorolysis. The reaction mixtures can be used in various nucleic acid polymerization and/or amplification assays, among many other applications. In addition to reaction mixtures, the invention also provides related methods and reaction mixtures.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: June 29, 2010
    Assignee: Roche Molecular Systems, Inc.
    Inventors: David H. Gelfand, Keith A. Bauer, Amar P. Gupta, Veeraiah Bodepudi, John Niemiec
  • Publication number: 20100124744
    Abstract: Methods, reaction mixtures and systems for detecting the presence or absence of a target nucleic acid variant from a selection of possible variants is described.
    Type: Application
    Filed: September 14, 2009
    Publication date: May 20, 2010
    Applicant: Roche Molecular Systems, Inc.
    Inventors: Stephen Gordon Will, Amar P. Gupta, Laura Geyer
  • Publication number: 20100015598
    Abstract: The present invention relates to methods and reagents for modifying the emission of light from labeled nucleic acids for the purpose of real time detection, analysis, and quantitation of nucleic acid sequences, e.g., using singly labeled probes. These methods and reagents exploit advantageous properties of thiazine dyes and diazine dyes. Furthermore, the use of these light emission modifiers in background reduction, nucleic acid duplex stabilization and other uses is also described. Related kits, reaction mixtures and integrated systems are described.
    Type: Application
    Filed: September 1, 2009
    Publication date: January 21, 2010
    Applicant: ROCHE MOLECULAR SYSTEM, INC.
    Inventors: Amar P. Gupta, Stephen Gordon Will
  • Publication number: 20100015630
    Abstract: The present invention relates to methods and reagents for modifying the emission of light from labeled nucleic acids for the purpose of real time detection, analysis, and quantitation of nucleic acid sequences, e.g., using singly labeled probes. These methods and reagents exploit advantageous properties of thiazine dyes and diazine dyes. Furthermore, the use of these light emission modifiers in background reduction, nucleic acid duplex stabilization and other uses is also described. Related kits, reaction mixtures and integrated systems are described.
    Type: Application
    Filed: September 1, 2009
    Publication date: January 21, 2010
    Applicant: ROCHE MOLECULAR SYSTEM, INC.
    Inventors: Amar P. Gupta, Stephen Gordon Will
  • Publication number: 20100015629
    Abstract: The present invention relates to methods and reagents for modifying the emission of light from labeled nucleic acids for the purpose of real time detection, analysis, and quantitation of nucleic acid sequences, e.g., using singly labeled probes. These methods and reagents exploit advantageous properties of thiazine dyes and diazine dyes. Furthermore, the use of these light emission modifiers in background reduction, nucleic acid duplex stabilization and other uses is also described. Related kits, reaction mixtures and integrated systems are described.
    Type: Application
    Filed: September 1, 2009
    Publication date: January 21, 2010
    Applicant: ROCHE MOLECULAR SYSTEM, INC.
    Inventors: Amar P. Gupta, Stephen Gordon Will
  • Publication number: 20090098532
    Abstract: This invention provides compositions and methods for HCV typing, e.g., genotyping and/or subtyping. The compositions and methods of the invention can be used to assign an HCV isolate to one of at least five HCV genotypes (for example, selected from genotypes 1, 2, 3, 4, 5 or 6), or assign an HCV isolate to one of at least six subtypes (for example, selected from subtypes 1a/b/c, 2a/c, 2b, 3a, 4a, 5a or 6a), where the methods of the invention use only a single typing probe to make the HCV type assignment.
    Type: Application
    Filed: November 11, 2008
    Publication date: April 16, 2009
    Applicant: ROCHE MOLECULAR SYSTEMS, INC.
    Inventors: Amar P. Gupta, Stephen Gordon Will
  • Patent number: 7465561
    Abstract: This invention provides compositions and methods for HCV typing, e.g., genotyping and/or subtyping. The compositions and methods of the invention can be used to assign an HCV isolate to one of at least five HCV genotypes (for example, selected from genotypes 1, 2, 3, 4, 5 or 6), or assign an HCV isolate to one of at least six subtypes (for example, selected from subtypes 1a/b/c, 2a/c, 2b, 3a, 4a, 5a or 6a), where the methods of the invention use only a single typing probe to make the HCV type assignment.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: December 16, 2008
    Assignee: Roche Molecular Systems, Inc.
    Inventors: Amar P. Gupta, Stephen Gordon Will