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:
Oct. 06, 2009
Filed:
Aug. 15, 2003
David L. Light, Cornwall, GB;
Christopher R. L. Golley, Bugle St Austell Cornwall, GB;
Ernest Gay, Macon, GA (US);
Milton Constantin, Vila Cabanas Barcarena, BR;
David L. Light, Cornwall, GB;
Christopher R. L. Golley, Bugle St Austell Cornwall, GB;
Ernest Gay, Macon, GA (US);
Milton Constantin, Vila Cabanas Barcarena, BR;
Imerys Pigments, Inc., Roswell, GA (US);
Abstract
A pigment product for use in a coating composition to provide a gloss coating on paper, the pigment product comprising a processed particulate kaolin having a particle size distribution such that at least about 80% by weight of the particles have an equivalent spherical diameter less than about 2 p,m and in the range of from about 10% to about 20% by weight of the particles have an equivalent spherical diameter less than about 0.25 wm, the particles have a shape factor in the range of from about 20 to about 36 and the particles have a particle steepness in the range of about greater than about 35, more preferably in the range of about 35 to about 40, and wherein the kaolin is derived from a secondary kaolin source.