Patents by Inventor Roy D. MacPherson

Roy D. MacPherson 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).

  • Improvements in or relating to the electrowinning of metals
    Patent number: 4105532
    Abstract: An electrolytic cell and process are described for use in a plant for the cathodic recovery of a metal from, for example, an ore. The cell includes one or more intermediate compartments which are bounded by ion-permeable separators and are disposed between the anode compartment and the cathode compartment. In the process, an aqueous solution of a salt of the metal is circulated around a first circuit including the cathode compartment of the cell, and an acid solution is circulated around a second circuit including the anode compartment. The fluid in the intermediate compartment(s) may also be circulated.
    Type: Grant
    Filed: January 8, 1976
    Date of Patent: August 8, 1978
    Assignee: Parel Societe Anonyme
    Inventors: Kendrick P. Haines, Roy D. MacPherson