Patents by Inventor Roger W. Ramsey

Roger W. Ramsey 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).

  • Method for recovery of high grade gold alloy from karat gold-clad base metal substrates
    Patent number: 4606797
    Abstract: A method for recovering high grade gold alloy in an unoxidized condition from karat gold clad to a base metal substrate without significant oxidation of the substrate, wherein the substrate is employed as an anode in an aqueous solution of from about 0.02 to about 2% by weight nitric acid and is subjected to electrolysis at a temperature of from about 48.degree. C. to about 94.degree. C. for sufficient time to delaminate karat gold from the substrate in particulate form and deposit same in the solution, from which the delaminated karat gold may be separated.
    Type: Grant
    Filed: September 12, 1985
    Date of Patent: August 19, 1986
    Assignee: Engelhard Corporation
    Inventors: Arthur D. Taylor, Roger W. Ramsey