Patents by Inventor H. Vincent Brown

H. Vincent Brown 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).

  • Compositions comprising kaolin having nanosize dimensions
    Patent number: 7727324
    Abstract: Disclosed herein is a kaolin composition having nanosize dimensions. At least about 75% of the kaolin particles by weight have an equivalent spherical diameter (esd) of less than about 0.25 ?m. The kaolin can also have a particle size distribution wherein at least about 99% of the particles by weight have an esd of less than about 2 ?m, and/or wherein at least about 98% of the particles by weight have an esd of less than about 1 ?m, and/or wherein at least about 97% of the particles by weight have an esd of less than about 0.5 ?m. The kaolin can have a mean diameter ranging from about 0.075 ?m to about 0.2 ?m, and a shape factor of about 30 or less.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: June 1, 2010
    Assignee: Imerys Pigments, Inc.
    Inventors: H. Vincent Brown, Robert J. Pruett
  • Compositions Comprising Kaolin Having Nanosize Dimensions
    Publication number: 20070221092
    Abstract: Disclosed herein is a kaolin composition having nanosize dimensions. At least about 75% of the kaolin particles by weight have an equivalent spherical diameter (esd) of less than about 0.25 ?m. The kaolin can also have a particle size distribution wherein at least about 99% of the particles by weight have an esd of less than about 2 ?m, and/or wherein at least about 98% of the particles by weight have an esd of less than about 1 ?m, and/or wherein at least about 97% of the particles by weight have an esd of less than about 0.5 ?m. The kaolin can have a mean diameter ranging from about 0.075 ?m to about 0.2 ?m, and a shape factor of about 30 or less.
    Type: Application
    Filed: April 28, 2005
    Publication date: September 27, 2007
    Inventors: H. Vincent Brown, Robert Pruett