Patents by Inventor Clifford D. Smith

Clifford D. Smith 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).

  • Flexible insulated air duct
    Patent number: 4410014
    Abstract: A glass wool blanket is formed directly on glass fiber scrim for use in flexible insulated air duct with any kind of outer jacket. The scrim-faced wool passes the flame-penetration test of Underwriter's Laboratories Standard UL 181 regardless of the outer jacket material used.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: October 18, 1983
    Assignee: Owens-Corning Fiberglas Corporation
    Inventor: Clifford D. Smith