The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 01, 2010
Filed:
Apr. 28, 2005
H. Vincent Brown, Sandersville, GA (US);
Robert J. Pruett, Milledgeville, GA (US);
H. Vincent Brown, Sandersville, GA (US);
Robert J. Pruett, Milledgeville, GA (US);
Imerys Pigments, Inc., Roswell, GA (US);
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 μm. 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 μm, and/or wherein at least about 98% of the particles by weight have an esd of less than about 1 μm, and/or wherein at least about 97% of the particles by weight have an esd of less than about 0.5 μm. The kaolin can have a mean diameter ranging from about 0.075 μm to about 0.2 μm, and a shape factor of about 30 or less.