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. 10, 2019
Filed:
Nov. 02, 2017
Applicant:
United States Gypsum Company, Chicago, IL (US);
Inventors:
Qiang Yu, Grayslake, IL (US);
Weixin David Song, Shanghai, CN;
Assignee:
United States Gypsum Company, Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
B32B 13/08 (2006.01); B32B 3/26 (2006.01); B32B 5/02 (2006.01); B32B 17/02 (2006.01); B32B 29/00 (2006.01); C04B 28/14 (2006.01); B32B 13/14 (2006.01); C04B 111/00 (2006.01); C04B 111/40 (2006.01);
U.S. Cl.
CPC ...
B32B 13/08 (2013.01); B32B 3/26 (2013.01); B32B 5/02 (2013.01); B32B 13/14 (2013.01); B32B 17/02 (2013.01); B32B 29/00 (2013.01); C04B 28/14 (2013.01); C04B 2111/0062 (2013.01); C04B 2111/40 (2013.01); Y10T 428/249968 (2015.04);
Abstract
This invention provides gypsum wallboards with a unique microstructure where the walls between voids are enhanced in thickness and strength to substantially improve the strength and handling properties of the wallboards. A method of making lightweight gypsum wallboards is also provided.