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. 28, 2012
Filed:
Feb. 22, 2008
Applicants:
Yves Boussant-roux, Lexington, MA (US);
Edouard Schiavo, Villeneuve les Avignon, FR;
Alain Zanoli, Neuilly sur Seine, FR;
Inventors:
Yves Boussant-Roux, Lexington, MA (US);
Edouard Schiavo, Villeneuve les Avignon, FR;
Alain Zanoli, Neuilly sur Seine, 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
The present invention provides a fused cast refractory block comprising a mean zirconia (ZrO+HfO) content of more than 85% as a percentage by weight based on the oxides, and with a standard deviation σ of the local zirconia content divided by the volume of the block of less than 7.5.