Patents by Inventor Robert W. Southard

Robert W. Southard 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).

  • Mattress foundation
    Patent number: 4106139
    Abstract: An improved mattress foundation is prepared by splitting a foam slab along a corrugated path to provide two slabs, each having a corrugated face and each being supported by a rigid base to form a mattress foundation.
    Type: Grant
    Filed: November 19, 1975
    Date of Patent: August 15, 1978
    Assignee: The Dow Chemical Company
    Inventor: Robert W. Southard