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:
Jun. 16, 2015
Filed:
Dec. 17, 2013
Agc Ceramics Co., Ltd., Minato-ku, JP;
Yukihiro Ushimaru, Tokyo, JP;
Shinya Hayashi, Tokyo, JP;
AGC CERAMICS CO., LTD., Minato-ku, JP;
Abstract
To provide a high zirconia fused cast refractory which has high corrosion resistance to molten glass and which is scarcely susceptible to cracking during its production. A high zirconia fused cast refractory which has a chemical composition comprising from 96.5 to 98.5 mass % of ZrO, from 0.8 to 2.7 mass % of SiO, from 0.04 to 0.35 mass % in a total amount of NaO and KO, and from 0.02 to 0.18 mass % of BO, wherein contents of NaO, KO and BOsatisfy the relation of the following formula (1) at the same time:0.03≧C−(C+C)  (1)wherein Cis the content of NaO, Cis the content of KO, and Cis the content of BO, and each of these contents represents mass % in the refractory.