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:
Feb. 24, 2004
Filed:
Oct. 24, 2002
Bruno Classen, Neauphle le Chateau, FR;
Pierre Colombet, Longnes, FR;
Ciments Francais, Puteaux, FR;
Abstract
The lightly colored sulfoaluminous clinker contains: more than 55% by weight of calcium sulfoaluminate phase (C A S), more than 10% by weight of belite phase (C S), less than 10% by weight of anhydrite (C{overscore (S)}), and contains practically no ferrite phase, nor a gehlenite phase (C AS), nor free lime. It is prepared by a process of roasting carried out at temperatures comprised between about 1250° C. and 1350° C. It can be used for a wide range of applications by combining it with a source of calcium sulfate and/or Portland cement, to obtain binders having specific properties (color, setup time, mechanical strength, expansion or contraction . . . ).