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. 08, 2019
Filed:
Jul. 11, 2017
Applicant:
Armstrong World Industries, Inc., Lancaster, PA (US);
Inventors:
Michelle X. Wang, Lititz, PA (US);
Joanne Lefever, Lancaster, PA (US);
Lida Lu, Coraopolis, PA (US);
Assignee:
AWI Licensing LLC, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E04B 9/04 (2006.01); E04B 9/06 (2006.01); E04B 1/74 (2006.01); E04B 1/84 (2006.01); E04B 1/86 (2006.01); E04B 9/24 (2006.01); E04B 9/28 (2006.01);
U.S. Cl.
CPC ...
E04B 9/0435 (2013.01); E04B 1/86 (2013.01); E04B 9/045 (2013.01); E04B 9/067 (2013.01); E04B 9/241 (2013.01); E04B 9/28 (2013.01); E04B 2001/742 (2013.01); E04B 2001/8461 (2013.01);
Abstract
Described herein is an stain and sag resistant acoustic ceiling panel comprising a porous body formed from mineral and cellulosic fibers having an upper surface opposite a lower surface and at least one side surface extending between the upper surface and the lower surface; a first layer applied to the upper surface, the first layer comprising a hygroscopic component and a hydrophobic component; and a second layer applied to the lower surface, the second layer comprising a hydrophobic component.