Patents by Inventor Baback Gharizadeh

Baback Gharizadeh 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: 11680290
    Abstract: The present disclosure relates to methods of enzymatic treatment of double-stranded PCR amplified products for eliminating or minimizing primer-dimers in multiplex PCR reactions and for the efficient ligation of adapters. The present disclosure relates to methods and compositions that allow more efficient highly multiplex target amplification compared to conventional methods, compositions and kits by minimizing laboratory steps, eliminating primer-dimers and increasing the efficiency of adapter ligation. The disclosed methods use multiple target-specific primers for specific and selective amplification of targets in a subject's genome. The disclosed methods can be used for numerous downstream procedures and analysis, including DNA sequencing.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: June 20, 2023
    Assignee: Chapter Diagnostics, Inc.
    Inventors: Chunlin Wang, Zhihai Ma, Baback Gharizadeh
  • Patent number: 11261479
    Abstract: The present disclosure relates to a method of target enrichment and amplification of selective target regions of genomes or nucleic acid samples and further analysis by systems such as NGS. The disclosure provides methods and kits that can be used in numerous downstream procedures including DNA sequencing. The disclosed methods can be utilized to sequence the target nucleic acid sequences such as to detect the presence of genetic variations for biological assays, assessment of disease, to count copies of target regions, and to allow such target enrichment prior to sequencing.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: March 1, 2022
    Assignee: Chapter Diagnostics, Inc.
    Inventors: Chunlin Wang, Zhihai Ma, Baback Gharizadeh
  • Patent number: 11149322
    Abstract: The present disclosure relates to compositions and methods for detection, identification and quantification of human papillomaviruses (HPV) and clinically significant sexually transmitted infections (STI) in a single amplification reaction. The disclosed method utilizes next-generation sequencing (NGS) to sequence amplified products. The present disclosure is also directed to kits containing primers specific to multiple HPV and STI targets.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: October 19, 2021
    Assignee: Chapter Diagnostics, Inc.
    Inventors: Chunlin Wang, Zhihai Ma, Baback Gharizadeh
  • Publication number: 20210189457
    Abstract: The present disclosure relates to methods of enzymatic treatment of double-stranded PCR amplified products for eliminating or minimizing primer-dimers in multiplex PCR reactions and for the efficient ligation of adapters. The present disclosure relates to methods and compositions that allow more efficient highly multiplex target amplification compared to conventional methods, compositions and kits by minimizing laboratory steps, eliminating primer-dimers and increasing the efficiency of adapter ligation. The disclosed methods use multiple target-specific primers for specific and selective amplification of targets in a subject's genome. The disclosed methods can be used for numerous downstream procedures and analysis, including DNA sequencing.
    Type: Application
    Filed: December 19, 2019
    Publication date: June 24, 2021
    Inventors: Chunlin Wang, Zhihai Ma, Baback Gharizadeh
  • Publication number: 20200385821
    Abstract: The present disclosure relates to compositions and methods for detection, identification and quantification of human papillomaviruses (HPV) and clinically significant sexually transmitted infections (STI) in a single amplification reaction. The disclosed method utilizes next-generation sequencing (NGS) to sequence amplified products. The present disclosure is also directed to kits containing primers specific to multiple HPV and STI targets.
    Type: Application
    Filed: June 7, 2019
    Publication date: December 10, 2020
    Inventors: Chunlin Wang, Zhihai Ma, Baback Gharizadeh
  • Publication number: 20200340035
    Abstract: The present disclosure relates to a method of target enrichment and amplification of selective target regions of genomes or nucleic acid samples and further analysis by systems such as NGS. The disclosure provides methods and kits that can be used in numerous downstream procedures including DNA sequencing. The disclosed methods can be utilized to sequence the target nucleic acid sequences such as to detect the presence of genetic variations for biological assays, assessment of disease, to count copies of target regions, and to allow such target enrichment prior to sequencing.
    Type: Application
    Filed: April 23, 2019
    Publication date: October 29, 2020
    Inventors: Chunlin Wang, Zhihai Ma, Baback Gharizadeh
  • Patent number: 8304184
    Abstract: This invention relates to the identification of variants of an organism using variant-specific oligonucleotide primer pools to specifically hybridize to those polynucleotides in an sample comprising a plurality of polynucleotides that contain a target sequence that is unambiguously identifiable with a particular variant of the organism.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: November 6, 2012
    Inventor: Baback Gharizadeh
  • Patent number: 7875428
    Abstract: A DNA microarray, preferably in the form of a chip, contains probes which hybridize to generate primers capable of amplifying approximately 89 HPV types. These target the E1 region of the gene. The design of the chip allows for the detection of any known HPV type, based on a unique probe sequence derived from the HPV E1 region. The present assay utilizes a number of primers that can amplify from about one to six different types of HPV. A large number of primers can be used together. After amplification, the amplicons are contacted with specific probes that are unique for each HPV type. The array further employs a control sequence, which normalizes variability due to sample size.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: January 25, 2011
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Nader Pourmand, Baback Gharizadeh, Ronald W. Davis
  • Publication number: 20100196888
    Abstract: This invention relates to the identification of variants of an organism using variant-specific oligonucleotide primer pools to specifically hybridize to those polynucleotides in an sample comprising a plurality of polynucleotides that contain a target sequence that is unambiguously identifiable with a particular variant of the organism.
    Type: Application
    Filed: June 25, 2009
    Publication date: August 5, 2010
    Inventor: Baback GHARIZADEH
  • Publication number: 20070207456
    Abstract: A DNA microarray, preferably in the form of a chip, contains probes which hybridize to generate primers capable of amplifying approximately 89 HPV types. These target the E1 region of the gene. The design of the chip allows for the detection of any known HPV type, based on a unique probe sequence derived from the HPV E1 region. The present assay utilizes a number of primers that can amplify from about one to six different types of HPV. A large number of primers can be used together. After amplification, the amplicons are contacted with specific probes that are unique for each HPV type. The array further employs a control sequence, which normalizes variability due to sample size.
    Type: Application
    Filed: February 13, 2007
    Publication date: September 6, 2007
    Inventors: Nader Pourmand, Baback Gharizadeh, Ronald Davis
  • Publication number: 20050202436
    Abstract: The invention relates to a method of typing a sample of nucleic acid molecules in DNA sequencing technologies, whereby the molecules are suspected to comprise at least DNA from one type or species, e.g. microorganisms or viruses, with each species or type or target DNA having different nucleotide patterns. By adding a mixed set of at least two oligonucleotide primers, whereby each primer is designed for being specific for one type or species or target DNA, thereby allowing a primer or primers to hybridize in or close to the type-specific or target regions; determining the types or targets sequence by extending the hybridized primer or primers in a sequencing reaction. Hereby, the typing is simplified by using a set of type-specific primers and sequence pattern recognition approach. The method of invention is suitable for samples containing a plurality of types or species, multiple pathogenic infections or variants, and amplicons with unspecific amplification products.
    Type: Application
    Filed: July 17, 2003
    Publication date: September 15, 2005
    Inventor: Baback Gharizadeh