Patents by Inventor Gordon P. Petrash

Gordon P. Petrash 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).

  • Roof system
    Patent number: 4747247
    Abstract: Disclosed is a roof structure containing a fire retardant. The roof structure has a fluted deck with troughs therein and a meltable insulation layer overlying the fluted deck. The fire retardant includes a series of non-flammable absorbent strips or strip segments which can be placed in the troughs of the fluted deck for retarding the flow of molten insulation in the trough during a fire by absorbing the molten insulation material in the trough.
    Type: Grant
    Filed: September 19, 1986
    Date of Patent: May 31, 1988
    Assignee: The Dow Chemical Company
    Inventors: Wayne E. Petersen, Jr., Gordon P. Petrash, David L. Roodvoets, Elizabeth A. Riley