Patents by Inventor Ellen Gawalt

Ellen Gawalt 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: 8758899
    Abstract: The present invention provides a dense-coverage, adherent phosphorous-based coating on the native oxide surface of a material. Disclosed phosphorous-based coatings include phosphate and organo-phosphonate coatings. The present invention also provides further derivatization of the phosphorous-based coatings to yield dense surface coverage of chemically reactive coatings and osetoblast adhesion-promoting and proliferation-promoting coatings on the native oxide surface of a titanium material.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: June 24, 2014
    Assignee: The Trustees of Princeton University
    Inventors: Jeffrey Schwartz, Michael J. Avaltroni, Kim S. Midwood, Jean E. Schwarzbauer, Ellen Gawalt
  • Publication number: 20120012033
    Abstract: The present invention provides a dense-coverage, adherent phosphorous-based coating on the native oxide surface of a material. Disclosed phosphorous-based coatings include phosphate and organo-phosphonate coatings. The present invention also provides further derivatization of the phosphorous-based coatings to yield dense surface coverage of chemically reactive coatings and osetoblast adhesion-promoting and proliferation-promoting coatings on the native oxide surface of a titanium material.
    Type: Application
    Filed: September 21, 2011
    Publication date: January 19, 2012
    Inventors: Jeffrey Schwartz, Michael J. Avaltroni, Kim S. Midwood, Jean E. Schwarzbauer, Ellen Gawalt
  • Patent number: 8092585
    Abstract: The present invention provides a dense-coverage, adherent phosphorous-based coating on the native oxide surface of a material. Disclosed phosphorous-based coatings include phosphate and organo-phosphonate coatings. The present invention also provides further derivatization of the phosphorous-based coatings to yield dense surface coverage of chemically reactive coatings and osteoblast adhesion-promoting and proliferation-promoting coatings on the native oxide surface of a titanium material.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: January 10, 2012
    Assignee: The Trustees of Princeton University
    Inventors: Jeffrey Schwartz, Michael J. Avaltroni, Kim S. Midwood, Jean E. Schwarzbauer, Ellen Gawalt
  • Publication number: 20110093082
    Abstract: The present invention provides a dense-coverage, adherent phosphorous-based coating on the native oxide surface of a material. Disclosed phosphorous-based coatings include phosphate and organo-phosphonate coatings. The present invention also provides further derivatization of the phosphorous-based coatings to yield dense surface coverage of chemically reactive coatings and osetoblast adhesion-promoting and proliferation-promoting coatings on the native oxide surface of a titanium material.
    Type: Application
    Filed: October 19, 2010
    Publication date: April 21, 2011
    Applicant: The Trustees of Princeton University
    Inventors: Jeffrey Schwartz, Michael J. Avaltroni, Kim S. Midwood, Jean E. Schwarzbauer, Ellen Gawalt
  • Patent number: 7815963
    Abstract: The present invention provides a dense-coverage, adherent phosphorous-based coating on the native oxide surface of a material. Disclosed phosphorous-based coatings include phosphate and organo-phosphonate coatings. The present invention also provides further derivatization of the phosphorous-based coatings to yield dense surface coverage of chemically reactive coatings and osteoblast adhesion-promoting and proliferation-promoting coatings on the native oxide surface of a titanium material.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: October 19, 2010
    Assignee: The Trustees of Princeton University
    Inventors: Jeffrey Schwartz, Michael J. Avaltroni, Kim S. Midwood, Jean E. Schwarzbauer, Ellen Gawalt
  • Publication number: 20070077440
    Abstract: A modified metal composition is disclosed comprising a metal surface or metal alloy surface having a metal oxide, and an organic acid having a phosphonic acid, a hydroxamic acid, sulphonic acid, or a carboxylic acid functional group that is deposited onto the surface of the metal oxide forming a self assembled monolayer, multiple monolayers, or a film of a phosphonate, sulphonate, hydroxamic acid, or carboxylate with —COOH, —OH and —NH2 terminal tail groups on the native oxide surface of the metal or the metal alloy. A process for preparing the modified metal surface or metal alloy surface is provided. Biomaterials and medical devices containing the modified metal surface or metal alloy surface are disclosed that are substantially inert or resistant to cell adhesion.
    Type: Application
    Filed: October 4, 2006
    Publication date: April 5, 2007
    Inventor: Ellen Gawalt
  • Publication number: 20060194008
    Abstract: Phosphorus-based coatings having a plurality of phosphate moieties, a plurality of phosphonate moieties, or both, covalently bonded to an oxide surface of an implantable substrate exhibiting one or more of the following characteristics: (a) the surface phosphorus-containing group density of the coated regions of the substrate is at least about 0.1 nmol/cm2; (b) the phosphorus-based coating has a thickness of less than about 10 nm; or (c) the surface phosphorus-containing group density of the coated regions of the substrate is equal to or greater than the surface hydroxyl group density of the oxide surface of the substrate. Implantable devices embodying the coated substrates are also disclosed.
    Type: Application
    Filed: January 12, 2006
    Publication date: August 31, 2006
    Applicant: Princeton University
    Inventors: Jeffrey Schwartz, Ellen Gawalt, Michael Alvatroni
  • Patent number: 6645644
    Abstract: Ligand-containing coating layers on the surface of hydroxide-bearing substrates comprising transition metal atoms selected from the group consisting of Group IVB, Group VB and Group VIB of the Periodic Chart covalently bonded to the surface hydroxyls of said substrate, wherein each transition metal atom is further covalently bonded to one or more ligands of said coating layer, thereby covalently bonding said coating layer to said substrate. Disclosed ligands include inorganic phosphates and organic phosphonates.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: November 11, 2003
    Assignee: The Trustees of Princeton University
    Inventors: Jeffrey Schwartz, Ellen Gawalt, Michael Avaltroni