Patents by Inventor David R. Leon

David R. Leon 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).

  • Thiol-, hydroxyl-, amine- or vinyl-terminated polythioethers
    Patent number: 7834105
    Abstract: Curable compositions comprising polythioether polymers and polybasic acid-based polyepoxies, and methods of using curable compositions comprising polythioether polymers and polybasic acid-based polyepoxies are disclosed. Cured, curable compositions exhibit enhanced corrosion resistance and adhesion upon exposure to fuels.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: November 16, 2010
    Assignee: PRC DeSoto International, Inc.
    Inventors: Suresh G. Sawant, Chandra B. Rao, David R. Leon
  • COMPOSITIONS AND METHODS OF MAKING COMPOSITIONS EXHIBITING FUEL RESISTANCE
    Publication number: 20090326167
    Abstract: Curable compositions comprising polythioether polymers and polybasic acid-based polyepoxies, and methods of using curable compositions comprising polythioether polymers and polybasic acid-based polyepoxies are disclosed. Cured, curable compositions exhibit enhanced corrosion resistance and adhesion upon exposure to fuels.
    Type: Application
    Filed: May 12, 2008
    Publication date: December 31, 2009
    Applicant: PRC-DESOTO INTERNATIONAL, INC.
    Inventors: Suresh G. Sawant, Chandra B. Rao, David R. Leon
  • Compositions and methods of making compositions exhibiting fuel resistance
    Patent number: 7390859
    Abstract: Curable compositions comprising polythioether polymers and polybasic acid-based polyepoxies, and methods of using curable compositions comprising polythioether polymers and polybasic acid-based polyepoxies are disclosed. Cured, curable compositions exhibit enhanced corrosion resistance and adhesion upon exposure to fuels.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: June 24, 2008
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Suresh G. Sawant, Chandra B. Rao, David R. Leon