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:
Sep. 28, 2010
Filed:
Mar. 27, 2007
Leonard J. Schliesman, Wisconsin Rapids, WI (US);
James P. Niemiec, Wisconsin Rapids, WI (US);
Fikret Kaya, Wisconsin Rapids, WI (US);
Robert S. Van Helden, Appleton, WI (US);
Leonard J. Schliesman, Wisconsin Rapids, WI (US);
James P. Niemiec, Wisconsin Rapids, WI (US);
Fikret Kaya, Wisconsin Rapids, WI (US);
Robert S. Van Helden, Appleton, WI (US);
Newpage Wisconsin System, Inc., Miamisburg, OH (US);
Abstract
A paper coating includes a combination of a primary pigment and a secondary pigment. The primary pigment includes anionic particles having a particle size distribution where at least 96% of the particles by weight have a particle size less than 2 microns. The secondary pigment is a cationic, grit-free pigment having an average particle size of 3 microns or less. The coating also includes up to 17 weight % of a hydrophilic styrene-butadiene latex based on the weight of the dry pigments and a co-binder. Another embodiment of this invention is a coated base sheet that includes a base sheet to which the above coating has been applied.