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:
Feb. 23, 1982
Filed:
Oct. 16, 1980
Applicant:
Inventor:
Max Kronstein, Bronx, NY (US);
Assignee:
International Lead Zinc Research Organization, Inc., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ; C23C / ;
U.S. Cl.
CPC ...
148-616 ; 148 / ; 148 / ;
Abstract
The surface of a metal, namely, carbon steel (automotive steel), galvanized steel and/or aluminum, can be modified by treating the metal surface with a dilute aqueous oxalic acid solution. The resultant oxalic acid treated metal surface can be further treated with a phosphatizing bath. Such dual treatment improves the corrosion resistance of the metal surface and is particularly useful in the treatment of lighter weight automobile bodies having joints of carbon steel, galvanized steel and/or aluminum.