Patents by Inventor Robin L. Phinney

Robin L. Phinney 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).

  • Metal hydroxide deodorant formulation
    Patent number: 5512274
    Abstract: A deodorant composition consists essentially of magnesium hydroxide in an amount sufficient to neutralize 3-methyl-2-hexanoic acid associated with human perspiration. The composition is used by applying it to a surface in contact with human perspiration in an amount sufficient to reduce perspiration odor. The composition and method are useful for inhibiting perspiration odor in humans.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: April 30, 1996
    Inventor: Robin L. Phinney
  • Process for refining kaolin
    Patent number: 5143599
    Abstract: A process is disclosed for producing high brightness kaolin from ore containing silica, other types of clays, minerals such as ilmenite micas, feldspars and various metal silicates as well as organic matter. The process consists of sizing, a double floatation step, magnetic separation, leaching and oxidative brightening steps. This is a novel combination of conventional unit operations and in particular the use of a double floatation step to remove quartz and various trace minerals that interfere with achieving high optical brightness for kaolin.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: September 1, 1992
    Assignee: Kaolin Industries, Ltd.
    Inventors: Gary Derdall, Robin L. Phinney
  • Apparatus for producing phosphoric acid from phosphate ore
    Patent number: 5093088
    Abstract: An apparatus for producing phosphoric acid by the recovery of P.sub.2 O.sub.5 from a phosphate ore is disclosed. A slurry of a phosphate ore in an aqueous phosphoric acid solution is formed in each of a plurality of reaction zones connected in series. Phosphate ore is introduced into the first reaction zone and phosphoric acid into the last reaction zone whereby the reaction of the phosphoric acid with the ore forms a slurry of coarse solids, fine solids and monocalcium phosphate in the phosphoric acid solution. A first process stream comprising coarse solids is removed from the first reaction zone and each of the other reaction zones and is tranferred to the adjacent, successive reaction zone.
    Type: Grant
    Filed: February 14, 1989
    Date of Patent: March 3, 1992
    Assignee: Potash Corporation of Saskatchewan
    Inventors: Gary D. Derdall, William R. Erickson, Robin L. Phinney, James D. Wilson
  • Method for producing phosphoric acid from phosphate ore
    Patent number: 4828811
    Abstract: A process and apparatus for producing phosphoric acid by the recovery of P.sub.2 O.sub.5 from a phosphate ore is disclosed. A slurry of a phosphate ore in an aqueous phosphoric acid solution is formed in each of a plurality of reaction zones connected in series. Phosphate ore is introduced into the first reaction zone and phosphoric acid into the last reaction zone whereby the reaction of the phosphoric acid with the ore forms a slurry of coarse solids, fine solids and monocalcium phosphate in the phosphoric acid solution. A first process stream comprising coarse solids is removed from the first reaction zone and each of the other reaction zones and is transferred to the adjacent, successive reaction zone.
    Type: Grant
    Filed: July 28, 1987
    Date of Patent: May 9, 1989
    Assignee: Potash Corporation of Saskatchewan
    Inventors: Gary D. Derdall, William R. Erickson, Robin L. Phinney, James D. Wilson