Patents by Inventor Claud E. Westbrook

Claud E. Westbrook 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).

  • Dust free silica particles
    Patent number: 10738193
    Abstract: A long term dust free mass of natural silica particles is produced by covering 10-60 percent of the total surface area of the particles with a thin film of white mineral oil with a low viscosity of less than 200 Saybolt SUS at 100° F. and preferably in the range of 60-100 Saybolt SUS at 100° F.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: August 11, 2020
    Assignee: Covia Holdings Corporation
    Inventors: Jeffery Hicks, Claud E. Westbrook
  • Dry clay powder for asphalt sealer and novel asphalt sealer
    Patent number: 7641729
    Abstract: A ball clay powder having a moisture content of less than 5% and at least about 25% of indigenous silica, said powder comprising a blend of at least two natural ball clays, wherein one of the ball clays is naturally silica rich and has at least about 40% indigenous silica.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: January 5, 2010
    Assignee: Unimin Corporation
    Inventors: Claud E. Westbrook, Russell J. Fish