Patents by Inventor John D. Birle

John D. Birle 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).

  • Polycrystalline diamond and/or cubic boron nitride body and process for making said body
    Patent number: 4220455
    Abstract: A shaped confined mass of diamond and/or cubic boron nitride crystals coated with elemental non-diamond carbon, under a partial vacuum, is infiltrated by fluid silicon producing a like-shaped product wherein the crystals are bonded together by a medium comprised of silicon carbide and elemental silicon.
    Type: Grant
    Filed: October 24, 1978
    Date of Patent: September 2, 1980
    Assignee: General Electric Company
    Inventors: Philippe D. St. Pierre, Charles R. Morelock, John D. Birle