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:
Nov. 13, 2012
Filed:
Jun. 16, 2009
Applicants:
Michel Gaubil, Les Angles, FR;
Ludovic Massard, Monteux, FR;
Inventors:
Michel Gaubil, Les Angles, FR;
Ludovic Massard, Monteux, FR;
Assignee:
Saint-Gobain Centre de Recherches et d'Etudes Europeen, Courbevoie, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/484 (2006.01);
U.S. Cl.
CPC ...
Abstract
Fused and cast refractory product including on oxides basis in percent by weight and for a total of 100%: ZrO+HfOcomplement to 100%; 3.5% to 6.0% SiO; 0.7% to 1.5% AlO; 0.10% to 0.43% NaO+KO; 0.05% to 0.80% BO; less than 0.4% CaO+SrO+MgO+ZnO; less than 0.05% PO; less than 0.55% FeO+TiO; less than 1.5% other species. The ratio of percentages by weight of AlO/(NaO+KO) being greater than or equal to 3.5 and the ratio of percentages by weight of BO/(NaO+KO) being between 0.3 and 2.5.