Patents by Inventor Joseph Allen Norris

Joseph Allen Norris 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).

  • Kaolin clays which are conditioned prior to removing impurities
    Patent number: 6007618
    Abstract: Kaolin clays are conditioned for the removal of colored titaniferous impurities by (A) first mixing the kaolin clay with a collector to condition the impurities, in the absence of a dispersant, but in the presence of sufficient water to yield a mixture having a solids content of at least 65 percent by weight and (B) then deflocculating the kaolin clay mixture at a pH of at least 4.0 with a dispersant in amounts sufficient to yield a kaolin clay slurry which is suitable for subsequent processing to remove colored titaniferous impurities.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: December 28, 1999
    Assignee: Thiele Kaolin Company
    Inventors: Joseph Allen Norris, Jorge L. Yordan
  • Process for conditioning kaolin clays prior to removing impurities
    Patent number: 5685899
    Abstract: Kaolin clays are conditioned for the removal of colored titaniferous impurities by (A) first mixing the kaolin clay with a collector to condition the impurities, in the absence of a dispersant, but in the presence of sufficient water to yield a mixture having a solids content of at least 65 percent by weight and (B) then deflocculating the kaolin clay mixture at a pH of at least 4.0 with a dispersant in amounts sufficient to yield a kaolin clay slurry which is suitable for subsequent processing to remove colored titaniferous impurities.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: November 11, 1997
    Assignee: Thiele Kaolin Company
    Inventors: Joseph Allen Norris, Jorge L. Yordan