Patents by Inventor Joe W. Cotton

Joe W. Cotton 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).

  • Ore dewatering process and compositions therefor
    Patent number: 4990264
    Abstract: The present invention is directed to a dewatering aid which functions unexpectedly efficiently in the dewatering of a particulate solids slurry, e.g. mineral ore concentrate or slurry, wherein a dewatering aid is added thereto followed by filtration of the slurry. Such improved dewatering results are achieved by adding to the mineral ore slurry, an effective amount of a dewatering aid comprising an alkoxylated C.sub.6 -C.sub.11 alkanol or alkanoic acid wherein alkoxylation is conducted with propylene oxide or butylene oxide.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: February 5, 1991
    Assignee: Sherex Chemical Company, Inc.
    Inventors: James G. Fuller, Owen Portwood, Joe W. Cotton
  • Ion exchange process for the purification of base metal electrolyte solutions
    Patent number: 4067802
    Abstract: A co-reagent system in the form of an admixture of a metal chelation collector and a mono- or dialkyl substituted phosphoric acid is adapted for selectively removing ferric iron from base metal electrolytic solutions in accordance with the liquid-liquid ion exchange extraction technique.
    Type: Grant
    Filed: May 10, 1976
    Date of Patent: January 10, 1978
    Assignee: Ashland Oil, Inc.
    Inventors: Alvin D. Cronberg, James A. Hartlage, Joe W. Cotton