Patents by Inventor Vonnie D. Hood

Vonnie D. Hood 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).

  • Multi-layer anvil for ultra high pressure presses
    Patent number: 5780139
    Abstract: An anvil for use in ultra high pressure presses capable of operating in the pressure ranges where diamonds, polycrystalline diamond composites and cubic boron nitride are stable, fabricated by diffusion bonding together a plurality of cemented tungsten carbide layers. The anvil has a working layer adjacent to the highest pressure of the press with the remaining plurality of layers behind the working layer for support. The working layer has a higher hardness than the supporting layers and the supporting layers each have higher toughness than the working layer.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: July 14, 1998
    Assignee: Rogers Tool Works, Inc.
    Inventors: Lan Carter, Madapusi K. Keshavan, Ghanshyam Rai, Jimmy W. Eason, Vonnie D. Hood