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:
Jul. 09, 2002
Filed:
Apr. 16, 2001
Applicant:
Inventors:
Siba P. Ray, Murrysville, PA (US);
Xinghua Liu, Monroeville, PA (US);
Douglas A. Weirauch, Murrysville, PA (US);
Robert A. DiMilia, Baton Rouge, LA (US);
Joseph M. Dynys, New Kensington, PA (US);
Frankie E. Phelps, Apollo, PA (US);
Alfred F. LaCamera, Trafford, PA (US);
Assignee:
Alcoa Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C 3/08 ;
U.S. Cl.
CPC ...
C25C 3/08 ;
Abstract
A method of producing commercial purity aluminum in an electrolytic reduction cell comprising ceramic inert anodes is disclosed. The method produces aluminum having acceptable levels of Fe, Cu and Ni impurities. The ceramic inert anodes used in the process may comprise oxides containing Fe and Ni, as well as other oxides, metals and/or dopants.