Patents by Inventor Robert James Hoye

Robert James Hoye 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).

  • Gas-assisted molding of thixotropic semi-solid metal alloy
    Patent number: 5787959
    Abstract: High strength to weight ratio, improved dimensional and surface quality hollow metal moldings are formed by injecting thixotropic, semi-solid metal billets as a "short shot" into a mold cavity; introducing an inert gas into the charge under pressure to force the metal into full and faithful contact with cavity surfaces and to form a hollow portion in the molding; maintaining the pressure of the gas on the charge in the cavity until the metal has solidified and then venting the gas for molded product removal.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: August 4, 1998
    Assignee: General Motors Corporation
    Inventors: Venkatasubramanian Laxmanan, Robert James Hoye, Jayprakash Uttamchand Raisoni, Suresh Deepchand Shah