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:
Mar. 25, 2003
Filed:
Mar. 17, 2000
Applicant:
Inventors:
Paul Martin Benson, Allegheny County, PA (US);
John Prentiss Sanders, III, Allegheny County, PA (US);
Assignee:
Yesuvius Crucible Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D 4/108 ;
U.S. Cl.
CPC ...
B22D 4/108 ;
Abstract
A refractory shape is described for transferring molten metal in a continuous casting operation. The shape includes an inner surface made from an unfired composition comprising a calcium rich grain, a hydration-resistant grain, 6-28 wt. % carbon, and a binder. The unfired composition may also include an antioxidant and silica. The inner surface resists spalling and alumina deposition.