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:
Jul. 19, 1994
Filed:
Mar. 31, 1993
Applicant:
Inventors:
David R McCormick, Madison Heights, MI (US);
Chi-Fan Hsu, Farmington Hills, MI (US);
Assignee:
Henkel Corporation, Plymouth Meeting, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C23F / ;
U.S. Cl.
CPC ...
75715 ; 423 53 ; 75711 ; 156665 ; 148253 ;
Abstract
The invention is a process for removing a chromium containing coating from an aluminum article. The chromium containing coating is removed from the aluminum article by contacting the aluminum article having the chromium containing coating with an alkaline treating bath to form an ultrasonically removable chromium containing coating and treating the aluminum article with the ultrasonically removable coating with ultrasonic vibrations to remove the chromium containing coating.