Patents by Inventor Charles E. T. White

Charles E. T. White 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).

  • Lead-free alloy containing tin, silver and indium
    Patent number: 5580520
    Abstract: A low melting point solder alloy comprising effective amounts of tin, silver and indium.
    Type: Grant
    Filed: November 4, 1994
    Date of Patent: December 3, 1996
    Assignee: The Indium Corporation of America
    Inventors: James A. Slattery, Charles E. T. White
  • Lead-free alloy containing tin, silver and indium
    Patent number: 5256370
    Abstract: A low melting point solder alloy comprising effective amounts of tin, silver and indium.
    Type: Grant
    Filed: May 4, 1992
    Date of Patent: October 26, 1993
    Assignee: The Indium Corporation of America
    Inventors: James A. Slattery, Charles E. T. White
  • Fusible alloy containing bismuth, indium, lead, tin and gallium
    Patent number: 5248476
    Abstract: An alloy composition comprising effective amounts of bismuth, indium, lead, tin, and gallium, which is especially suited for lens blocking.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: September 28, 1993
    Assignee: The Indium Corporation of America
    Inventors: James A. Slattery, Charles E. T. White, George E. Kraeger, John R. Sovinsky
  • Lead-free alloy containing tin, zinc and indium
    Patent number: 5242658
    Abstract: A low melting point solder alloy comprising effective amounts of tin, zinc and indium.
    Type: Grant
    Filed: July 7, 1992
    Date of Patent: September 7, 1993
    Assignee: The Indium Corporation of America
    Inventors: Laurence G. Stevens, Charles E. T. White
  • Treatment of indium dusts
    Patent number: 5108497
    Abstract: Indium-containing feedstocks, such as flue dusts from a refining or smelting process, are treated to increase the concentration of indium and at the same time to reduce the concentrations of lead, copper, and arsenic. The flue dusts are treated in a sodium-doped lead bath at temperatures of 675.degree. to 800.degree. C. Soda ash in the amount of 15 to 35 weight percent is blended with the feed stock and added to the sodium-doped lead bullion. The sodium reacts with the dusts to form a liquid dross, which is removed, cooled, and crushed. The powdered dross is water leached to remove the sodium salts. The indium remains in the filler cake and can be processed by conventional methods for the recovery of indium. About 95% of the indium reports to the filter cake, while lead retention in the filter cake is only about 5-15% of the initial lead content in the dust. A majority of the zinc also reports to the filter cake.
    Type: Grant
    Filed: September 5, 1990
    Date of Patent: April 28, 1992
    Assignee: Indium Corporation of America
    Inventors: Nicholas B. Gomez, John P. Hager, Charles E. T. White, Laurence G. Stevens