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. 04, 1989
Filed:
Mar. 28, 1988
Applicant:
Inventors:
Jean-Claude Charbonnier, Chambourcy, FR;
Alain Roche, Saint Jean de Niost, FR;
Maurice Romand, Villeurbanne, FR;
Janine Lenoir, Chaponost, FR;
Eric Sahakian, Decines, FR;
Assignee:
Institut de Recherches de la Siderurgie Francaise (IRSID), Maizieres-les-Metz, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
148254 ; 148 / ; 148 / ; 134-2 ;
Abstract
This process for treating surfaces of products dip-coated in a bath of molten zinc and aluminum, and intended to be phosphated, involves pickling, preceding the phosphating, with a highly alkaline solution of high pH and containing zinc in solution. The process applies chiefly to products whose coating contains a high proportion of aluminum, particularly in the case of galvanized sheet metal, which it makes easier to phosphate. It is used for painted sheet metal for motor vehicles.