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:
Oct. 03, 1978
Filed:
Jun. 08, 1977
Applicant:
Inventors:
Derek John Fray, Trumpington, GB;
James Henry Cleland, Cambridge, GB;
Assignee:
National Research Development Corporation, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C / ; C25C / ; C25C / ;
U.S. Cl.
CPC ...
204 67 ; 204 / ; 204 / ; 204 66 ;
Abstract
A molten metal, such as aluminium, is refined by passing a stream thereof into an anode comprising a bed of conductive particles, such as carbon, in a molten or conductive-solution salt. A diaphragm, pervious to the salt but impervious to the molten metal, separates the anode from a cathode comprising a bed of conductive particles in a salt which is molten or in conductive solution.