Patents Assigned to Jennifer May Smith
  • Electrowinning of metal from sulphide ores and recovery of water soluble sulphides
    Patent number: 4225571
    Abstract: Process and apparatus for the electrowinning of metals from sulphide ores wherein a sulphide ore is initially leached in a water soluble sulphide solution, alkali is then added, and the resulting solution is electrolyzed so as to deposit metal at the cathode and obtain water soluble sulphide as a by-product. The process is particularly suitable for obtaining antimony from stibnite.
    Type: Grant
    Filed: March 9, 1979
    Date of Patent: September 30, 1980
    Assignees: Berenice Isabelle de Denus, David Vivian Smith, Jennifer May Smith
    Inventor: Robert N. de Denus