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:
Nov. 09, 1993
Filed:
Apr. 07, 1992
Aldo Ruffaldi, Kraainem, BE;
Vesuvius Crucible Company, Pittsburgh, PA (US);
Abstract
Erosion resistant stopper rod for steel casting having an elongated body of a first refractory material and a sleeve of a second refractory material having elevated erosion resistance characteristics. The sleeve may be copressed with the stopper rod body or separately formed and cemented thereto. The sleeve is positioned around the stopper rod in the region where contact with the slagline occurs. The erosion resistant material of the sleeve is selected from the group consisting of zirconia, magnesia, zirconia-graphite and magnesia-graphite.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile