Patents by Inventor Larry E. Hewitt

Larry E. Hewitt 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).

  • Thermoplastic Polyurethanes With Good Fuel Resistance
    Publication number: 20110064898
    Abstract: A high molecular weight, thermoplastic polyurethane composition characteristically resistant to aliphatic hydrocarbon fuels, where the polyurethane composition is adapted for use as an aliphatic hydrocarbon fuel barrier in the construction of flexible fuel containers, and the polyurethane is the reaction product of a poly(diethylene adipate) glycol reacted with a non-hindered diisocyanate and an aliphatic chain extender.
    Type: Application
    Filed: May 12, 2009
    Publication date: March 17, 2011
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: Julius Farkas, Larry E. Hewitt, Charles P. Jacobs, Sridhar K. Siddhamalli, Joseph J. Vontorcik
  • Golf ball
    Patent number: 4248432
    Abstract: Golf balls are provided having a thermoplastic polyesterurethane cover comprising the reaction product of a polyester having a molecular weight from about 800 to 1500 reacted with para-phenylene diisocyanate or 1,4-cyclohexane diisocyanate, which is thereafter molded around a golf ball core.
    Type: Grant
    Filed: July 16, 1979
    Date of Patent: February 3, 1981
    Assignee: The B. F. Goodrich Company
    Inventors: Larry E. Hewitt, David T. Popovich