Patents by Inventor John R. Penn, III

John R. Penn, III 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).

  • Passive fire protection system
    Patent number: 4220685
    Abstract: A passive system for protecting a structure against high temperatures which consists of a thin protective foil of heat-resistant material such as stainless steel fastened to the face of the structure to be protected. When subjected to high heating rates, the local thermal expansion of the foil forms a blister bulging away from the structure to thereby create an air space which thermally insulates the structure.
    Type: Grant
    Filed: July 19, 1978
    Date of Patent: September 2, 1980
    Assignee: Grumman Aerospace Corporation
    Inventors: Edward G. Markow, John R. Penn, III