Patents by Inventor David Kirk Thompson

David Kirk Thompson 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 pigments and methods of making the same
    Patent number: 7494541
    Abstract: Disclosed are methods of processing kaolin to produce two distinct grades of kaolin in a simultaneous manner. The methods involve processing kaolin by degritting a kaolin crude; subjecting the degritted kaolin crude to flotation to provide a kaolin having reduced titania content; ozonating the kaolin having reduced titania content; centrifuging the kaolin to provide a coarse stream and fine stream; refining the coarse stream into a coarse engineered kaolin pigment; and refining the fine stream into a fine glossing kaolin pigment. Also disclosed are systems for the automated processing of kaolin to produce two distinct grades of kaolin with real time feedback.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: February 24, 2009
    Assignee: BASF Corporation
    Inventors: Sharad Mathur, Kenneth W. Folmar, David Kirk Thompson, Barry L. Daniels