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:
Jun. 02, 1987
Filed:
Aug. 15, 1985
Applicant:
Inventors:
Joseph Schapira, Paris, FR;
Victor Ken, Colombes, FR;
Francois-Joseph Duboys, Pacy sur Eure, FR;
Patrick Regnard, Asnieres, FR;
Assignee:
Compagnie Francaise de Produits Industriels, Gennevilliers, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
148 / ;
Abstract
Process for the treatment by chemical conversion, within very short spaces of time of substrates of zinc or of one of its alloys especially of continuously zinc coated steel coils, wherein the bath employed in the phosphatization step proper comprises, besides the conventional constituents, a proportion of 0.3 to 2 g/l of Fe.sup.2+ ions, this bath comprising also from 0.2 to 1.5 g/l, preferably from 0.2 to 1.2 gl/ of Zn.sup.2+ ions and from 0.3 to 2 g/l, preferably from 0.3 to 1.2 g/l of Ni.sup.2+ ions, the weight ratios