Patents Assigned to Alma Phillips
  • Corrosion resistant alloys
    Patent number: 4717539
    Abstract: A group of alloys exhibiting good corrosion resistance and with properties suitable for fabricating dental prostheses consist essentially of copper, nickel and tantalum. Copper and nickel comprise the major components, while tantalum is present in lesser quantities. Lithium and/or Ce, Si metal may be added in small amounts as a deoxidant. Minor amounts of elements such as aluminum, gallium, indium, silicon, titanium and cerium can be added to modify the physical properties of the alloys.
    Type: Grant
    Filed: April 22, 1986
    Date of Patent: January 5, 1988
    Assignees: Alma Phillips, Hugh Finley
    Inventor: David P. Morisey