US Patent Issued to SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN on Feb. 24 for "Refractory product having a high content of zirconia" (French Inventors)

ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,403, issued on Feb. 24, was assigned to SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN (Courbevoie, France).

"Refractory product having a high content of zirconia" was invented by Isabelle Cabodi (Cavaillon, France) and Pierrick Fabien Vespa (Aix en Provence, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "Fused cast refractory product including, as weight percentages on the basis of the oxides and for a total of 100%: ZrO2: balance to 100%, Hf2O: greater than5%, SiO2: 8.1% to 12.0%, B2O3: 0.20% to 0.90%, Na2O+K2O: 0.40% to 0.80%, Al2O3: 0.3% to 2.0%, Y2O3: greater than2.0%, Fe2O3+TiO2: greater than0.6%, and other species: greater than...