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:
Jan. 17, 1995
Filed:
Oct. 22, 1993
Applicant:
Inventors:
Joseph L Stein, Pittsburgh, PA (US);
Donald A McIntyre, Aurora, OH (US);
P Sean McHugh, Duncanville, PA (US);
Assignee:
General Acquisition Corporation, Mexico, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501127 ; 501 89 ; 501128 ;
Abstract
A high alumina refractory and its preparation are disclosed. In addition to the mix of alumina particles providing an Al.sub.2 O.sub.3 content of at least 50%, by weight, there is included metallic carbide particles, having a critically-selected particle size distribution, in an amount between about 3 and about 25%, by weight, based on the total dry weight at the mixture. Other forms of carbon, like tar, pitch and graphite are omitted. The product is free from black core and has improved resistance to molten slags and metals.