Patents by Inventor Donald E. Hammond

Donald E. Hammond 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).

  • Cast composite material with high-silicon aluminum matrix alloy and its applications
    Patent number: 5394928
    Abstract: A cast composite material is formed from about 5 to about 35 volume percent of particulate reinforcement, preferably silicon carbide particles, embedded in an aluminum alloy matrix having from about 8.5 to about 12.6, most preferably about 9.5 to about 11.0, weight percent silicon. The cast composite material is particularly well suited for use as a foundry alloy for remelting purposes. Other alloying elements may be added without interfering with the beneficial effects of the silicon.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: March 7, 1995
    Assignee: Alcan International Ltd.
    Inventors: Donald E. Hammond, Michael D. Skibo
  • Cast compsoite material with high silicon aluminum matrix alloy and its applications
    Patent number: 5186234
    Abstract: A cast composite material is formed from about 5 to about 35 volume percent of particulate reinforcement, preferably silicon carbide particles, embedded in an aluminum alloy matrix having from about 8.5 to about 12.6, most preferably about 9.5 to about 11.0, weight percent silicon. The cast composite material is particularly well suited for use as a foundry alloy for remelting purposes. Other alloying elements may be added without interfering with the beneficial effects of the silicon.
    Type: Grant
    Filed: October 29, 1991
    Date of Patent: February 16, 1993
    Assignee: Alcan International Ltd.
    Inventors: Donald E. Hammond, Michael D. Skibo