Patents by Inventor Roger L. Hill

Roger L. Hill 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).

  • Mold making method
    Patent number: 4925611
    Abstract: A method of making molds which is easy, quick and can be accomplished at room temperatures and atmospheric pressures. The method includes applying at least one layer of gel to a male mandrel and curing at least one layer of polyester impregnated fabric to the gel layer. At least one layer of epoxy impregnated fabric is cured to the polyester impregnated fabric. At least one layer of plaster impregnated is cured to the epoxy impregnated fabric. At least one layer of epoxy impregnated fabric is cured to the plaster impregnated fabric. The resulting mold is removed from the male mandrel.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: May 15, 1990
    Assignee: USBI Company
    Inventors: Charles H. Shockney, Roger L. Hill, William T. White
  • Trowelable ablative coating composition and method of use
    Patent number: 4837250
    Abstract: A trowelable ablative coating composition is disclosed. The composition comprises an epoxy resin, an amide curing agent, glass microspheres and ground cork. A method for protecting a substrate is also disclosed. The method comprises applying the trowelable ablative coating discussed above to a substrate and curing the coating composition.
    Type: Grant
    Filed: April 11, 1988
    Date of Patent: June 6, 1989
    Assignee: USBI Booster Production Company, Inc.
    Inventors: Stephen E. Headrick, Roger L. Hill
  • Trowelable ablative coating composition and method of use
    Patent number: 4772495
    Abstract: A trowelable ablative coating composition is disclosed. The composition comprises an epoxy resin, an amide curing agent, glass microspheres and ground cork. A method for protecting a substrate is also disclosed. The method comprises applying the trowelable ablative coating discussed above to a substrate and curing the coating composition.
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: September 20, 1988
    Assignee: United Technologies Corporation
    Inventors: Stephen E. Headrick, Roger L. Hill