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:
Dec. 14, 1999
Filed:
Aug. 16, 1996
Applicant:
Inventor:
Debbie O'Haver-Smith, Lilburn, GA (US);
Assignee:
G-P Gypsum Corporation, Atlanta, GA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428703 ; 428141 ; 428143 ; 428172 ; 428219 ; 428220 ; 4283124 ; 428337 ; 428393 ; 4284111 ; 4285375 ; 428920 ; 4273898 ; 156 39 ; 156 71 ; 523091 ; 5230917 ; 52408 ;
Abstract
Disclosed is a mat-faced gypsum board of the general type having a gypsum-based core formed from a gypsum slurry compressed through an extrusion ratio of at least about 3:1 wherein the fibrous mat facing on at least one side of the board has a weight per unit surface area of greater than about 1.85 lb./100 ft..sup.2 and consists essentially of inorganic fibers having a diameter of less than about 15 microns. Also disclosed are methods for manufacturing such a gypsum board and the use of such a gypsum board in exterior finishing systems, interior lath systems and as a door core.