Patents by Inventor David S. Bokor

David S. Bokor 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 for improving the rheology of calcined kaolin clay products
    Patent number: 5261956
    Abstract: A method for preparing a calcined kaolin clay powder having good high shear rheology in high solids aqueous slurries. A kaolin clay powder of fine particle size is calcined at a sufficient temperature and for a sufficient period to destroy the crystallinity thereof; and the calcined product is dry milled in a media mill, using a work input of from 100 to 160 hp-hr/ton of dry clay.
    Type: Grant
    Filed: October 15, 1992
    Date of Patent: November 16, 1993
    Assignee: ECC International Inc.
    Inventors: Weyman H. Dunaway, Paul R. Suitch, David S. Bokor, Raymond B. McNeeley, Michael D. Smith, Tony May