Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Reexamination Certificate
2003-08-15
2009-10-06
Marcheschi, Michael A (Department: 1793)
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
C106S416000, C106S484000, C106S487000, C162S181800, C241S006000
Reexamination Certificate
active
07597755
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.
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Constantin Milton
Gay Ernest
Golley Christopher R. L.
Light David L.
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Imerys Pigments, Inc.
Marcheschi Michael A
Parvini Pegah
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