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:
Jan. 26, 2016
Filed:
Dec. 13, 2012
Applicant:
Saint-gobain Placo Sas, Suresnes, FR;
Inventors:
Jean-Louis Mongrolle, Bassens, FR;
Jean-Luc Germain, Livry-Gargan, FR;
Assignee:
Saint-Gobain Placo SAS, , FR;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C01F 11/46 (2006.01); C04B 28/14 (2006.01); C04B 11/032 (2006.01); C04B 111/00 (2006.01);
U.S. Cl.
CPC ...
C01F 11/466 (2013.01); C04B 11/032 (2013.01); C04B 28/146 (2013.01); C04B 2111/0062 (2013.01);
Abstract
A method of forming a gypsum based product is disclosed. The method comprises the steps of: calcining a mixture of water and gypsum under conditions of raised temperature and pressure within a vessel to produce an alpha-hemihydrate slurry therein; passing the alpha-hemihydrate slurry from the vessel to a mixer for mixing with additional water to produce a settable slurry, which is arranged to set to form the gypsum based product.