Patents by Inventor James E. Hetzner

James E. Hetzner 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).

  • Powder metal mold casting for three dimensional parts
    Patent number: 7578335
    Abstract: A process for powder metal mold casting of three-dimensional parts is disclosed wherein a casting of complex parts is facilitated.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: August 25, 2009
    Assignee: GM Global Technology Operations, Inc.
    Inventors: James E. Hetzner, Frederick J. Rozario
  • Aluminum/magnesium 3D-Printing rapid prototyping
    Patent number: 7141207
    Abstract: A 3D Printing Rapid Prototyping process using Al/Mg particles coated with a metal (i.e. copper, nickel, zinc, or tin) that (1) prevents oxidation of the Al/Mg particles, and (2) either alone, or when alloyed with the aluminum or magnesium core metal, melts below the liquidus temperature of the core.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: November 28, 2006
    Assignee: General Motors Corporation
    Inventors: William F. Jandeska, Jr., James E. Hetzner