Patents by Inventor Karin A. Hughes

Karin A. Hughes 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: 6818760
    Abstract: This invention provides methods for removing unincorporated dye-labeled molecules from a mixture that includes dye-labeled polynucleotides or other polymers and the unincorporated dye-labeled molecules. The methods involve adsorbing the unincorporated dye-labeled molecules into a plurality of particles that are made up of one or more porous hydrophobic materials that are encapsulated in a hydrophilic matrix.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: November 16, 2004
    Assignee: Prolinx Incorporated
    Inventors: Douglas A. Spicer, Karin A. Hughes, Robert J. Kaiser, James E. Mahoney, Amy L. Springer, Mark L. Stolowitz, Carl H. D. Weissman
  • Publication number: 20040072203
    Abstract: This invention provides methods for purifying nucleic acids, in particular primer extension products such as those obtained in nucleic acid sequencing reactions. The methods involve the use of a primer to which is attached a string of arylboronic acid moieties. After extension of the primer using a polymerase, the primer extension-products are complexed with a solid support to which is attached an arylboronic acid complexing moiety. The resulting complex is separated from the reaction mixture, washed, and the primer extension products are dissociated from the solid support. The primer extension products are obtained in a form particularly suitable for loading directly on a capillary electrophoresis apparatus.
    Type: Application
    Filed: April 16, 2003
    Publication date: April 15, 2004
    Applicant: Prolinx, Inc.
    Inventors: Connie Kim Dix, Karin A. Hughes, Robert J. Kaiser, Mark L. Stolowitz
  • Patent number: 6462179
    Abstract: Reagents suitable for the modification of a bioactive species for the purpose of incorporating one or more phenyldiboronic acid (PDBA) moieties for subsequent conjugation to a different (or the same) bioactive species having one or more pendant boronic compound complexing moieties of the general formula of General Formula I, wherein group R is a reactive electrophilic or nucleophilic moiety suitable for reaction of the PDBA reagent with a bioactive species. Group Z is a spacer selected from a saturated or unsaturated chain up to about 0 to 6 carbon equivalents in length, an unbranched saturated or unsaturated chain of from about 6 to 18 carbon equivalents in length with at least one intermediate amide or disulfide moiety, and a polyethylene glycol chain of from about 3 to 12 carbon equivalents in length. Group Q is a linkage that includes one of amide, ether and thioether moieties.
    Type: Grant
    Filed: July 25, 2000
    Date of Patent: October 8, 2002
    Assignee: Prolinx, Inc.
    Inventors: Mark L. Stolowitz, Edward A. Kesicki, Kevin P. Lund, Karin A. Hughes
  • Patent number: 6414136
    Abstract: This invention provides methods for removing unincorporated fluorescent dye-labeled molecules from a mixture that includes fluorescently-labeled polynucleotides and the unincorporated fluorescent dye-labeled molecules. The methods involve adsorbing the unincorporated fluorescent dye-labeled molecules into a plurality of particles that are made up of one or more porous hydrophobic materials that are encapsulated in a hydrophilic matrix.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: July 2, 2002
    Assignee: Prolinx, Inc.
    Inventors: Douglas A. Spicer, Karin A. Hughes, Robert J. Kaiser, James E. Mahoney, Amy L. Springer, Mark L. Stolowitz, Carl H. D. Weissman
  • Publication number: 20010049438
    Abstract: This invention provides methods for purifying nucleic acids, in particular primer extension products such as those obtained in nucleic acid sequencing reactions. The methods involve the use of a primer to which is attached a string of arylboronic acid moieties. After extension of the primer using a polymerase, the primer extension products are complexed with a solid support to which is attached an arylboronic acid complexing moiety. The resulting complex is separated from the reaction mixture, washed, and the primer extension products are dissociated from the solid support. The primer extension products are obtained in a form particularly suitable for loading directly on a capillary electrophoresis apparatus.
    Type: Application
    Filed: July 8, 1999
    Publication date: December 6, 2001
    Inventors: CONNIE KIM DIX, KARIN A. HUGHES, ROBERT J. KAISER, MARK L. STOLOWITZ
  • Patent number: 6124471
    Abstract: Reagents suitable for the modification of a bioactive species for the purpose of incorporating one or more phenyldiboronic acid (PDBA) moieties for subsequent conjugation to a different (or the same) bioactive species having one or more pendant boronic compound complexing moieties of the general formula of General Formula I, ##STR1## wherein group R is a reactive electrophilic or nucleophilic moiety suitable for reaction of the PDBA reagent with a bioactive species. Group Z is a spacer selected from a saturated or unsaturated chain up to about 0 to 6 carbon equivalents in length, an unbranched saturated or unsaturated chain of from about 6 to 18 carbon equivalents in length with at least one intermediate amide or disulfide moiety, and a polyethylene glycol chain of from about 3 to 12 carbon equivalents in length. Group Q is a linkage that includes one of amide, ether and thioether moieties.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: September 26, 2000
    Assignee: Prolinx, Inc.
    Inventors: Mark L. Stolowitz, Edward A. Kesicki, Kevin P. Lund, Karin A. Hughes
  • Patent number: 6075126
    Abstract: Boron compound complexing reagents, boron compound complexes, and methods of synthesizing these reagents and complexes are disclosed. These reagents and complexes include those shown in General Formula CIII, General Formula CIV, and General Formula CVI. In one embodiment, the reagents of General Formula CIII may be used to produce, after condensation with a bioactive species (BAS), the reagent of General Formula CIV. The reagent of General Formula CIV may be used to form a complex with a boron compound, such as a complex shown in General Formula CVI.
    Type: Grant
    Filed: August 21, 1998
    Date of Patent: June 13, 2000
    Assignee: Prolinx, Inc.
    Inventors: Mark L. Stolowitz, Edward A. Kesicki, Kevin P. Lund, Karin A. Hughes