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. 22, 1992
Filed:
Aug. 06, 1991
Applicant:
Inventors:
Charles W Lehnert, Stone Mountain, GA (US);
Brian G Randall, Stone Mountain, GA (US);
George F Fowler, Jr, Norcross, GA (US);
Ray W Hinkel, Stone Mountain, GA (US);
Assignee:
Georgia-Pacific Corporation, Atlanta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E04F / ; E04F / ;
U.S. Cl.
CPC ...
52443 ; 52481 ; 52317 ; 52416 ; 156 42 ; 428285 ; 428920 ;
Abstract
Glass mat-faced gypsum boards having a set core containing gypsum dihydrate and at least a minimum amount of chopped fibers, as well as other optional fire-resistant additives, are provided. The resulting boards obtain superior fire resistance properties over conventional paper-faced boards of like thickness which include a similar amount of chopped glass fibers.