Patents by Inventor Erin Doherty

Erin Doherty 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).

  • Sparsely cross-linked nanogels: a novel polymer structure for microchannel DNA sequencing
    Patent number: 7531073
    Abstract: The present invention is generally directed to novel polymeric materials for use in the electrophoretic separation of nucleic acids. In particular, the novel polymer materials are sparsely crosslinked nanogels, dissolved in an aqueous buffer to form solutions with moderate to high viscosity. The present invention further provides methods for generating such novel polymers, and related methods of their use.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: May 12, 2009
    Assignee: Northwestern University
    Inventors: Annelise Barron, Erin Doherty
  • SPARSELY CROSS-LINKED NANOGELS: A NOVEL POLYMER STRUCTURE FOR MICROCHANNEL DNA SEQUENCING
    Publication number: 20090011420
    Abstract: The present invention is generally directed to novel polymeric materials for use in the electrophoretic separation of nucleic acids. In particular, the novel polymer materials are sparsely crosslinked nanogels, dissolved in an aqueous buffer to form solutions with moderate to high viscosity. The present invention further provides methods for generating such novel polymers, and related methods of their use.
    Type: Application
    Filed: June 11, 2008
    Publication date: January 8, 2009
    Applicant: Northwestern University
    Inventors: Annelise Barron, Erin Doherty
  • Sparsely cross-linked nanogels: a novel polymer structure for microchannel DNA sequencing
    Patent number: 7399396
    Abstract: The present invention is generally directed to novel polymeric mateirals for use in the electrophoretic separation of nucleic acids. In particular, the novel polymer materials are sparsely crosslinked nanogels, dissolved in an aqueous buffer to form solutions with moderate to high viscosity. The present invention further provides methods for generating such novel polymers, and related methods of their use.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: July 15, 2008
    Assignee: Northwestern University
    Inventors: Annelise Barron, Erin Doherty
  • Hydrophobically modifed poly[ethylene glycol] for use in pitch and stickies control in pulp and papermaking processes
    Publication number: 20080029231
    Abstract: Methods for inhibiting the depositions of organic contaminants from pulp in pulp and papermaking systems are disclosed. Hydrophobically modified poly[ethylene glycol] are added to the pulp or applied to deposition-prone surfaces of a papermaking system.
    Type: Application
    Filed: July 25, 2007
    Publication date: February 7, 2008
    Inventors: Qu-Ming Gu, Huai Cheng, William Carey, Robert Gelman, Jennifer Rittenhouse Pruss, Erin Doherty
  • Retention and drainage in the manufacture of paper
    Publication number: 20060289136
    Abstract: A method of improving retention and drainage in a papermaking process is disclosed. The method provides for the addition of an associative polymer, a second component and optionally a siliceous material to the papermaking slurry. Additionally, a composition comprising an associative polymer, and a second component, and optionally further comprising cellulose fiber is disclosed.
    Type: Application
    Filed: December 21, 2005
    Publication date: December 28, 2006
    Inventors: Erin Doherty, Robert Gelman
  • Retention and drainage in the manufacture of paper
    Publication number: 20060289137
    Abstract: A method of improving retention and drainage in a papermaking process is disclosed. The method provides for the addition of an associative polymer, prepared by an inverse emulsion polymerization process that utilizes multiple, discrete additions of initiator. Additionally, a process for preparation of an associative polymer, prepared by an inverse emulsion polymerization process that utilizes multiple discrete additions of initiator is disclosed.
    Type: Application
    Filed: December 21, 2005
    Publication date: December 28, 2006
    Inventors: Robert Gelman, Erin Doherty
  • Hydrophobic polymers and their use in preparing cellulosic fiber compositions
    Publication number: 20060266488
    Abstract: A method of improving retention and drainage comprising adding a water compatible hydrophobic copolymer to a papermaking slurry is disclosed. A composition comprising a water compatible hydrophobic copolymer is described.
    Type: Application
    Filed: December 21, 2005
    Publication date: November 30, 2006
    Inventors: Erin Doherty, Robert Gelman
  • Process for preparing high molar mass polymers
    Publication number: 20060127351
    Abstract: The present invention describes processes for preparing water-compatible anionic polymers of high molar mass via water-in-oil polymerization.
    Type: Application
    Filed: December 14, 2004
    Publication date: June 15, 2006
    Applicant: Hercules Incorporated
    Inventors: Erin Doherty, Martha Hollomon, Robert Gelman
  • Sparsely cross-linked nanogels: a novel polymer structure for microchannel DNA sequencing
    Publication number: 20060074186
    Abstract: The present invention is generally directed to novel polymeric mateirals for use in the electrophoretic separation of nucleic acids. In particular, the novel polymer materials are sparsely crosslinked nanogels, dissolved in an aqueous buffer to form solutions with moderate to high viscosity. The present invention further provides methods for generating such novel polymers, and related methods of their use.
    Type: Application
    Filed: January 18, 2005
    Publication date: April 6, 2006
    Applicant: Northwestern University
    Inventors: Annelise Barron, Erin Doherty