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. 19, 2012
Filed:
Feb. 15, 2008
Glen O. Vetter, New Hope, MN (US);
Larry L. Herfindal, Chisago City, MN (US);
John W. Mittelsteadt, Lakeville, MN (US);
Heidi M. Turner, Rosemount, MN (US);
Andrew Ubel, Saint Paul, MN (US);
Kevin W. Evanson, Maple Grove, MN (US);
Glen O. Vetter, New Hope, MN (US);
Larry L. Herfindal, Chisago City, MN (US);
John W. Mittelsteadt, Lakeville, MN (US);
Heidi M. Turner, Rosemount, MN (US);
Andrew Ubel, Saint Paul, MN (US);
Kevin W. Evanson, Maple Grove, MN (US);
Valspar Sourcing, Inc., Minneapolis, MN (US);
Abstract
A cement fiberboard substrate is treated on at least one edge of the substrate with an aqueous solution containing at least one phosphorus acid or salt of a phosphorus acid. The treated edge is overcoated with a sealer, primer or topcoat. The resulting prefinished fiber cement siding product has improved coating adhesion, especially near burnished regions and near edges and corners proximate the burnished regions. A phosphorus acid or salt of a phosphorus acid also may be added to the sealer to provide further improvement in coating adhesion.