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:
Apr. 23, 1985
Filed:
Feb. 13, 1984
Applicant:
Inventors:
Bernd D Struck, Langerwehe, DE;
Francisco J Dias, Julich, DE;
Hartmut Luhleich, Duren, DE;
Ursula Paffen nee Siebert, Wurselen, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ;
U.S. Cl.
CPC ...
204104 ; 2042 / ; 204294 ; 427113 ; 427228 ;
Abstract
An anode for electrolytic oxidation of sulfur dioxide is made by coating an lectrode of a graphite-like carbon material with a layer of cokable organic material such as sugar, phenolic resin, and asphalt pitch, heating the coated electrode body in an inert atmosphere to a temperature of between 400.degree. to 800.degree. C. and thereafter heating the coated electrode to a temperature in the range of 1400.degree. to 2000.degree. C., so that the material is first coked on the graphite to produce a porous flow-through electrode body which, thereafter, is heated to a higher temperature, followed by cooling.