Patents by Inventor John M. Barnard

John M. Barnard 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).

  • Method of encasing a structure in metal
    Patent number: 5574957
    Abstract: An improved method is disclosed for encasing an object in a shell or layer of outer material. The encased object and the outer material are formed from sinterable metal or ceramic particulate material. Both the object to be encased and the shell or encasement are formed by extrusion. Novel methods are disclosed by which the object and the outer material can be simultaneously formed by co-extruding the sinterable particulate materials, or by extruding the outer layer onto a formed object using the die assembly of the invention.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: November 12, 1996
    Assignee: Corning Incorporated
    Inventors: John M. Barnard, Ronald E. Johnson, Kathleen A. Wexell