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. 27, 1982
Filed:
Dec. 18, 1980
Applicant:
Inventor:
Howard I Kaplan, Florence, AL (US);
Assignee:
Reynolds Metals Company, Richmond, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C / ;
U.S. Cl.
CPC ...
2042 / ; 204294 ;
Abstract
An improved alumina reduction cell is described in which the carbonaceous cathode includes refractory hard metal tiles forming the surface in contact with molten aluminum formed in the cell and intermediate tiles separating the refractory hard metal tiles from the carbonaceous cathode to prevent reaction between refractory hard metal tiles and the carbonaceous cathode in the presence of the molten aluminum.