Patents by Inventor Cathy W. Dougherty

Cathy W. Dougherty 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).

  • Roofing element and roof employing such element
    Patent number: 4601150
    Abstract: A roofing panel is provided comprising a layer of closed cell plastic foam and a layer of mortar. A reinforcing grid is disposed within the mortar layer.
    Type: Grant
    Filed: February 4, 1985
    Date of Patent: July 22, 1986
    Assignee: The Dow Chemical Company
    Inventor: Cathy W. Dougherty