Paper making and fiber liberation – Processes and products – Non-fiber additive
Reexamination Certificate
2007-04-10
2007-04-10
Hug, Eric (Department: 1731)
Paper making and fiber liberation
Processes and products
Non-fiber additive
C162S158000, C423S327100, C423S700000, C424S684000, C502S064000
Reexamination Certificate
active
10847066
ABSTRACT:
A microparticle retention aid for use in papermaking containing a high performance purified natural zeolite pigment is disclosed. Use of the pigment facilitates manufacture of papers with improved quality and economics. When used as filler, the novel zeolite pigment is readily retained and eliminates print-through in uncoated papers. The novel zeolite pigment is low in abrasion and provides improved coefficient of friction.
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Klass Charles P.
Sikora Martin D.
Cordray Dennis
Evans Michelle
Gunn & Lee , P.C.
Hug Eric
ZO Mineral Partners Ltd.
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