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:
Jan. 19, 1982
Filed:
Jul. 03, 1980
Applicant:
Inventors:
Joseph Schapira, Paris, FR;
Victor Ken, Colombes, FR;
Jean C Masson, Le Perreux, FR;
Francois J Duboys, Le Plessis Robinson, FR;
Assignee:
Compagnie Francaise de Produits Industriels, Gennevilliers, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23F / ;
U.S. Cl.
CPC ...
148 / ; 252135 ; 252156 ; 252173 ; 25217425 ;
Abstract
The invention relates to a process of phosphating surfaces of iron and of steel with manganese. The abovesaid process is characterized by the fact on the one hand, that it does not include a refining treatment preceding the proper phosphating, and on the other hand, that the alkali degreasing bath has a pH of 9 to 12 and includes in suspension bivalent manganese in orthophosphate form.