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:
Jan. 06, 2015
Filed:
Dec. 20, 2012
Applicant:
Georgia-pacific Gypsum Llc, Atlanta, GA (US);
Inventors:
Vincent B. Thomas, Bogart, GA (US);
Jeffrey Thomas Fields, Suwanee, GA (US);
Assignee:
Georgia-Pacific Gypsum LLC, Atlanta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E04B 1/04 (2006.01); C04B 24/00 (2006.01); C04B 111/52 (2006.01); E04F 15/20 (2006.01); E04B 1/82 (2006.01);
U.S. Cl.
CPC ...
E04F 15/20 (2013.01); E04B 1/82 (2013.01);
Abstract
Building materials include a dampening layer which contains a plaster and a viscoelastic polymer, such as polyvinyl butyral. The dampening layer may also include a barium salt. Methods of making a sound dampening material include providing a plaster mixture. The mixture may include a viscoelastic polymer and/or a barium salt. The plaster mixture is combined with water and/or a viscoelastic polymer dispersion, to form a slurry. The slurry is applied to a surface and set to form a sound dampening layer.