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:
Feb. 20, 2018
Filed:
Sep. 25, 2015
Applicant:
Usg Interiors, Llc, Chicago, IL (US);
Inventors:
Mark H. Englert, Libertyville, IL (US);
William A. Frank, Lake Villa, IL (US);
Assignee:
USG INTERIORS, LLC, Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
D21J 1/20 (2006.01); D21J 1/16 (2006.01); D21H 13/40 (2006.01); D21H 13/44 (2006.01); D21H 17/28 (2006.01); D21H 17/68 (2006.01); E04B 1/86 (2006.01); C04B 14/46 (2006.01); D21H 23/04 (2006.01); C04B 26/28 (2006.01); E04B 1/84 (2006.01); C04B 111/10 (2006.01); C04B 111/52 (2006.01);
U.S. Cl.
CPC ...
D21J 1/20 (2013.01); C04B 26/285 (2013.01); D21H 13/40 (2013.01); D21H 13/44 (2013.01); D21H 17/28 (2013.01); D21H 17/68 (2013.01); D21H 23/04 (2013.01); D21J 1/16 (2013.01); E04B 1/86 (2013.01); C04B 2111/10 (2013.01); C04B 2111/52 (2013.01); E04B 2001/8461 (2013.01); E04B 2001/8476 (2013.01);
Abstract
An acoustical tile including: 8 to 25 wt % mineral wool, 9 to 15 wt % starch binder, 9 to 15 wt % cellulosic fiber, wherein preferably the cellulosic fiber is newsprint, and 40 to 65 wt % perlite, wherein the weight ratio of the starch to the cellulosic fiber is 0.6 to 1.3:1; and a process for making the acoustical tile.