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:
Apr. 19, 2011
Filed:
Dec. 13, 2007
Applicant:
Hubert C. Francis, Lithonia, GA (US);
Inventor:
Hubert C. Francis, Lithonia, GA (US);
Assignee:
Georgia-Pacific Gypsum LLC, Atlanta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 28/14 (2006.01); B29C 43/00 (2006.01); E04C 2/00 (2006.01); C09K 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention describes a fire resistant building material composition, useful for example as a fire door core and to a method of making this composition where the building material of the present invention is prepared from an aqueous slurry of calcined gypsum, paper fibers, a water insoluble organic binder, fiber reinforcement and a set retarder.