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:
May. 24, 2022
Filed:
Jan. 23, 2018
National Gypsum Properties, Llc, Charlotte, NC (US);
Eli Stav, Charlotte, NC (US);
Jie Ling, Irmo, SC (US);
Brad Busche, Shelby, NC (US);
Joseph J. Bailey, Charlotte, NC (US);
R. G. Iyer, Fort Mill, SC (US);
Veda Evans, Charlotte, NC (US);
Gold Bond Building Products, LLC, Charlotte, NC (US);
Abstract
The present disclosure is directed to a method of manufacturing gypsum board as well as the resulting gypsum board. The method comprises providing a gypsum slurry with a shrinkage-reducing additive comprising a metal salt of an acid, a silica, or a mixture thereof. As a result, the gypsum board includes gypsum and a shrinkage-reducing additive comprising a metal salt of an acid, a silica, or a mixture thereof. The gypsum board exhibits an area shrinkage of less than 10%.