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:
Jun. 04, 2024
Filed:
Jun. 28, 2022
Applicant:
United States Gypsum Company, Chicago, IL (US);
Inventors:
Qinghua Li, Rolling Meadows, IL (US);
Mark Hemphill, Hawthorn Woods, IL (US);
Assignee:
UNITED STATES GYPSUM COMPANY, Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C04B 28/14 (2006.01); B28B 19/00 (2006.01); B32B 5/02 (2006.01); B32B 5/18 (2006.01); B32B 5/24 (2006.01); B32B 7/02 (2019.01); B32B 13/04 (2006.01); B32B 13/08 (2006.01); B32B 29/00 (2006.01); B32B 37/15 (2006.01); B32B 38/00 (2006.01); C04B 11/26 (2006.01); C04B 14/04 (2006.01); C04B 18/04 (2006.01); C04B 18/06 (2006.01); C04B 22/00 (2006.01); C04B 22/06 (2006.01); C04B 22/10 (2006.01); C04B 22/16 (2006.01); C04B 103/00 (2006.01); C04B 111/00 (2006.01);
U.S. Cl.
CPC ...
C04B 28/14 (2013.01); B28B 19/0092 (2013.01); B32B 5/022 (2013.01); B32B 5/18 (2013.01); B32B 5/245 (2013.01); B32B 7/02 (2013.01); B32B 13/045 (2013.01); B32B 13/08 (2013.01); B32B 29/007 (2013.01); B32B 37/15 (2013.01); B32B 38/0004 (2013.01); B32B 38/164 (2013.01); C04B 11/266 (2013.01); C04B 14/047 (2013.01); C04B 18/0445 (2013.01); C04B 18/064 (2013.01); C04B 18/065 (2013.01); C04B 22/0093 (2013.01); C04B 22/064 (2013.01); C04B 22/10 (2013.01); C04B 22/16 (2013.01); B32B 2038/0084 (2013.01); B32B 2250/40 (2013.01); B32B 2262/101 (2013.01); B32B 2264/10 (2013.01); B32B 2264/30 (2020.08); B32B 2266/049 (2016.11); B32B 2305/022 (2013.01); B32B 2307/72 (2013.01); B32B 2307/732 (2013.01); B32B 2309/02 (2013.01); B32B 2315/00 (2013.01); B32B 2315/085 (2013.01); B32B 2317/12 (2013.01); B32B 2607/00 (2013.01); C04B 2103/0078 (2013.01); C04B 2111/00629 (2013.01);
Abstract
A gypsum wallboard having a core with a central core layer and one or more densified layers is disclosed. At least one densified layer contains salt absorbent particles of zeolite and/or hydrotalcite to improve adhesion of the gypsum core to a cover sheet. Also, methods of making the gypsum wallboard and a wall system for employing the gypsum wallboard are disclosed.