Patents by Inventor Robert F. Conley

Robert F. Conley 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 removing radioactivity from kaolin
    Patent number: 4077874
    Abstract: A method of reducing the radioactivity found in naturally occurring kaolins to about 40% below its native value, and the leachable radiogenic components to less than 20%. This reduction is achieved by removing from the kaolin particles of a size less than 0.5 microns. This removal may be carried out by gravitational settling, flocculation of non-colloidal particles, or acid leaching.
    Type: Grant
    Filed: June 19, 1975
    Date of Patent: March 7, 1978
    Inventor: Robert F. Conley
  • Process for bleaching kaolin
    Patent number: 4002487
    Abstract: In a process for treating raw kaolin clay to improve the color and brightness by treating the clay in an aqueous dispersion with sodium dithionite, the improvement consisting of treating the dispersion with hydroxylamine or salt thereof after the treatment with sodium dithionite is complete.
    Type: Grant
    Filed: May 13, 1976
    Date of Patent: January 11, 1977
    Assignee: IMC Chemical Group
    Inventor: Robert F. Conley