Patents by Inventor William John Feaver

William John Feaver 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: 9909118
    Abstract: This invention provides compositions and methods for rapid separation, isolation and purification of nucleic acids from biological samples using anionic exchange media. The method can utilize commercially available strong or weak anion exchanger materials with selected solutions of known ionic strength for adsorption and elution. The instant method is particularly advantageous as it permits the purification and identification of shorter fragments of nucleic acids from bodily fluids which, until now, had not been identified.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: March 6, 2018
    Assignee: Trovagene, Inc.
    Inventors: Samuil R Umansky, Hovsep S Melkonyan, Erik Meyer, William John Feaver
  • Patent number: 9163229
    Abstract: This invention provides compositions and methods for rapid isolation and purification of nucleopolymers from biological samples using anionic exchange media. The method of this invention can utilize commercially available anion exchanger materials with selected solutions of known ionic strength for absorption and elution. The medium/nucleoprotein bound complex may be optionally stored or transported, and is subsequently treated with eluents to remove undesirable proteins and inorganic salts. The partially purified complex may also be stored or transported. This method is particularly advantageous since it allows rapid isolation and purification of soluble nucleic acids from a large volume of biological fluids with easy handling and storage, stabilizing the samples against degradation prior to analysis. It also permits the purification and identification of shorter fragments of nucleic acids from bodily fluids which, until now, had not been identified.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: October 20, 2015
    Assignee: Trovagene, Inc.
    Inventors: Hovsep Melkonyan, Erik Meyer, William John Feaver, Samuil R. Umansky
  • Publication number: 20150275198
    Abstract: This invention provides compositions and methods for rapid separation, isolation and purification of nucleic acids from biological samples using anionic exchange media. The method can utilize commercially available strong or weak anion exchanger materials with selected solutions of known ionic strength for adsorption and elution. The instant method is particularly advantageous as it permits the purification and identification of shorter fragments of nucleic acids from bodily fluids which, until now, had not been identified.
    Type: Application
    Filed: April 30, 2015
    Publication date: October 1, 2015
    Applicant: TROVAGENE, INC.
    Inventors: Samuil R Umansky, Hovsep S Melkonyan, Erik Meyer, William John Feaver
  • Publication number: 20080139801
    Abstract: This invention provides compositions and methods for rapid separation, isolation and purification of nucleopolymers, especially nucleic acids, from biological samples using anionic exchange media. The method of the present invention can utilize commercially available strong or weak anion exchanger materials with selected solutions of known ionic strength for adsorption and elution. The medium/nucleoprotein bound complex may be optionally stored or transported, but is subsequently treated with appropriate eluents to remove any undesirable proteins, including destabilizing enzymes, and inorganic salts and the like. The partially purified complex may also be stored or transported prior to further processing.
    Type: Application
    Filed: October 10, 2007
    Publication date: June 12, 2008
    Inventors: Samuil R. Umansky, Hovsep Melkonyan, Erik Meyer, William John Feaver
  • Publication number: 20040248103
    Abstract: Disclosed are compositions and methods for proximity-mediated rolling circle amplification and for real-time detection of proximity-mediated rolling circle amplification products. Rolling circle amplification (RCA) refers to nucleic acid amplification reactions involving replication of a circular nucleic acid template to form a long strand with tandem repeats of the sequence complementary to the circular template. In proximity-mediated RCA, binding guide conjugates are brought into close proximity, generally by associating them to the same analyte or to two analytes in close proximity. The binding guide conjugates comprise a specific binding molecule and a guide oligonucleotide. The guide oligonucleotides are complementary to guide complement portions on half circle probes.
    Type: Application
    Filed: June 4, 2003
    Publication date: December 9, 2004
    Inventors: William John Feaver, Michael Mullenix