Patents by Inventor Kenneth B. Files

Kenneth B. Files 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).

  • Coarse particle size kaolin clay and method
    Patent number: 5846309
    Abstract: A coarse particle kaolin clay is provided having an average Stokes equivalent particle diameter of about 4.5-6.0 microns, a BET surface area of about 8-11 m.sup.2 /g, and preferably having a median Malvern particle size of about 9.0-10.5 microns as determined by laser light-scattering measurement and a high aspect ratio preferably of about 12-14 as determined by Sphericity Model calculations. The coarse particle kaolin clay provides low viscosity build, good reinforcement properties and excellent surface finish qualities as a filler in thermoset composite materials, such as polyester molding compounds, and also provides excellent pigmenting properties in paints and industrial coatings.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: December 8, 1998
    Assignee: J. M. Huber Corporation
    Inventors: Gary M. Freeman, John M. M. Harrison, Kenneth B. Files