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. 03, 2002
Filed:
Sep. 15, 2000
Applicant:
Inventors:
Dean L. Putt, Lititz, PA (US);
Marsha Stalker Bischel, Lancaster, PA (US);
Anthony L. Wiker, Lancaster, PA (US);
Andrea M. Moser, Millersville, PA (US);
Assignee:
AWI Licensing Company, Wilmington, DE (US);
Primary Examiner:
Int. Cl.
CPC ...
E04B 1/84 ;
U.S. Cl.
CPC ...
E04B 1/84 ;
Abstract
An acoustically absorbent porous panel formed from a cured aqueous foamed cementitious material comprising on a wet basis of about 53% to about 68% by weight cement, about 17% to about 48% by weight water, about 0.05% to about 5% by weight fiber, and about 0.01% to about 10% by weight surfactant. The panel also has pores distributed within the cured material comprising about 75% to about 95% by volume of the material. The cement-based, foamed panel provides good acoustical performance with enhanced durability and moisture resistance.