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:
Nov. 13, 1979
Filed:
Jun. 21, 1978
Applicant:
Inventors:
William W Carlin, Portland, TX (US);
Lois A Dahlberg, Corpus Christi, TX (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25F / ;
U.S. Cl.
CPC ...
20412995 ; 20412975 ; 2041 / ;
Abstract
Disclosed is a method of cleaning foraminous metal bodies, for example, cathodes, of corrosion products and asbestos. The method is carried out by contacting the body with an aqueous cleaning solution containing an oxidation inhibitor, hydrochloric acid, and a source of hydrofluoric acid. Also disclosed is a method of electrolytically treating the cleaned metal surface with an organic hydroxy phosphonic acid.