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:
Sep. 04, 1984
Filed:
May. 09, 1983
Samuel Cukier, Toronto, Ontario, CA;
Henry A Kremer, Thornhill, Ontario, CA;
Other;
Abstract
A new oxidation-resistant pitch composition is obtained by treating in the molten state a coal tar or petroleum pitch with at least one pitch-soluble and compatible alkyl-aryl sulfonic acid or some salts thereof in an amount of less than 1% of said pitch, with a pitch suitable for making an electrode treated that way, upon subsequent carbonization in conjunction with petroleum coke, an electrode can be formed, with great resistance to oxidation, and with very little dusting. Due to increased coking value of the pitch, the fuming is decreased both during the art of making electrodes and during the use of same in the actual electrolysis thus providing environmental benefits. Such a pitch may also be used as a refractory material.