Patents by Inventor Christopher A. Rockstead

Christopher A. Rockstead 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).

  • Box beam reinforced concrete structure
    Patent number: 4393636
    Abstract: A box beam reinforced concrete and steel construction providing spaced apart wire mesh reinforced concrete skin walls and interior concrete supporting frangible sheets providing for solid concrete cores contiguous to and monolithically integrated with the skin walls.
    Type: Grant
    Filed: September 24, 1980
    Date of Patent: July 19, 1983
    Inventors: Raymond H. Rockstead, Christopher A. Rockstead