Patents by Inventor Xinsheng Ling

Xinsheng Ling 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: 8882980
    Abstract: Devices and methods for detecting an analyte are provided. Devices for voltage sensing of analytes may comprise a fluidic channel defined in a substrate, a pair of sensing electrodes disposed in a fluidic channel for sensing voltage therein, and a pair of electromotive electrodes for applying potential along the fluidic channel. The pair of sensing electrodes may include a first and second sensing electrode disposed at two discrete locations along the length of the fluidic channel and the pair of electromotive electrodes may be disposed at a first end and a second end of the fluidic channel. The fluidic channel may include a nanochannel or a microchannel.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: November 11, 2014
    Assignee: NABsys, Inc.
    Inventors: Xinsheng Ling, Barrett Bready, John S. Oliver, Maryam Jouzi, Leo Petrossian
  • Publication number: 20100096268
    Abstract: Devices and methods for detecting an analyte are provided. Devices for voltage sensing of analytes may comprise a fluidic channel defined in a substrate, a pair of sensing electrodes disposed in a fluidic channel for sensing voltage therein, and a pair of electromotive electrodes for applying potential along the fluidic channel. The pair of sensing electrodes may include a first and second sensing electrode disposed at two discrete locations along the length of the fluidic channel and the pair of electromotive electrodes may be disposed at a first end and a second end of the fluidic channel. The fluidic channel may include a nanochannel or a microchannel.
    Type: Application
    Filed: September 3, 2009
    Publication date: April 22, 2010
    Applicant: NABsys, Inc.
    Inventors: Xinsheng Ling, Barrett Bready, John S. Oliver, Maryam Jouzi, Leo Petrossian
  • Publication number: 20070190542
    Abstract: A method of employing a nanopore structure in a manner that allows the detection of the positions (relative and/or absolute) of nucleic acid probes that are hybridized onto a single-stranded nucleic acid molecule. In accordance with the method the strand of interest is hybridized with a probe having a known sequence. The strand and hybridized probes are translocated through a nanopore. The fluctuations in current measured across the nanopore will vary as a function of time corresponding to the passing of a probe attachment point along the strand. These fluctuations in current are then used to determine the attachment positions of the probes along the strand of interest. This probe position data is then fed into a computer algorithm that returns the sequence of the strand of interest.
    Type: Application
    Filed: October 3, 2006
    Publication date: August 16, 2007
    Inventors: Xinsheng Ling, Barrett Bready
  • Publication number: 20070042366
    Abstract: Featured are devices and systems embodying one or more solid-state nanopores useable for sensing and/or characterizing single macromolecules as well as sequencing DNA or RNA and/or determining RNA secondary structures. In once solid state nanopore of the present invention the width and/or length of the nanopore is defined or established by sharp edges of cleaved crystals that are maintained in fixed relation during the formation of the insulating member including the nanopore. In another aspect of the present invention, there is featured a linear or 2-D electrically addressable array of nanopores, where the nanopores are located at points of intersections between grooves formed in an upper surface of the insulating member and a groove formed in a lower surface of the insulating member.
    Type: Application
    Filed: February 13, 2004
    Publication date: February 22, 2007
    Applicant: Brown University
    Inventor: Xinsheng Ling
  • Publication number: 20050127035
    Abstract: Featured are devices and systems embodying one or more electrically-addressable-solid-state nanopores useful for sensing and/or characterizing single macromolecules as well as sequencing DNA or RNA. In one aspect of the present invention, there is featured a linear or 2-D electrically-addressable array of nanopores, where the nanopores are located at points of intersections between V-shaped grooves formed in an upper surface of the insulating member and a V-shaped groove formed in a lower surface of the insulating member. In another aspect of the present invention the solid-state nanopore of the present invention the width and/or length of the nanopore is defined or established by sharp edges of cleaved crystals that are maintained in fixed relation during the formation of the insulating member including the nanopore.
    Type: Application
    Filed: February 27, 2004
    Publication date: June 16, 2005
    Inventor: Xinsheng Ling