Patents by Inventor Philip G. Russell

Philip G. Russell 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).

  • Nodular copper removal from aluminum foil surfaces
    Patent number: 4337114
    Abstract: Nodular copper is dissolved from aluminum foil surfaces by contacting the aluminum with a 0.1 to 2 M ammonium persulfate solution. The contacting temperature is 20.degree. to 40.degree. C., preferably 30.degree. C., and the contacting time is 1 to 10 minutes, preferably 2 minutes.
    Type: Grant
    Filed: October 29, 1980
    Date of Patent: June 29, 1982
    Assignee: Sprague Electric Company
    Inventors: Philip G. Russell, Walter J. Bernard, Sidney D. Ross