Patents by Inventor Roger R. Rugroden

Roger R. Rugroden 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).

  • Thermally isolated roof structure
    Patent number: 4254598
    Abstract: A corrugated panel adapted to be nailed to a roof between the base roof structure and the roof covering material so as to provide a multitude of ventilating air passages under the roof covering and thermally isolate the roof covering from the building.
    Type: Grant
    Filed: May 21, 1979
    Date of Patent: March 10, 1981
    Inventor: Roger R. Rugroden