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. 04, 2014
Filed:
Mar. 15, 2013
Applicant:
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Inventor:
Nobuo Tomura, Chiyoda-ku, JP;
Assignee:
Asahi Glass Company, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/484 (2006.01);
U.S. Cl.
CPC ...
Abstract
To provide a high zirconia fused cast refractory having high durability, which hardly has cracks during the heating, by temperature changes during use and during the cooling at the time of suspension of operation. A high zirconia fused cast refractory which has a chemical composition comprising from 86 to 96 mass % of ZrO, from 2.5 to 8.5 mass % of SiO, from 0.4 to 3 mass % of AlO, from 0.4 to 1.8 mass % of KO, at most 0.04 mass % of BO, at most 0.04 mass % of POand at most 3.8 mass % of CsO and containing substantially no NaO.