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, 1992
Filed:
Nov. 23, 1990
Applicant:
Inventors:
Assignee:
Asahi Glass Company Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501105 ; 501103 ;
Abstract
A high zirconia fused cast refractory having excellent thermal cycle resistance which comprises, as chemical components of the refractory, from 90 to 95% by weight of ZrO.sub.2, from 3.5 to 7% by weight of SiO.sub.2 and from 1 to 3% by weight of Al.sub.2 O.sub.3 and which does not substantially contain any one of P.sub.2 O.sub.5, B.sub.2 O.sub.3 and CuO.