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:
Aug. 16, 1994
Filed:
Nov. 18, 1992
Applicant:
Inventors:
Assignee:
Ugine, Aciers de Chatillon et Gueugnon, Puteaux, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23G / ;
U.S. Cl.
CPC ...
134-3 ; 134 41 ;
Abstract
Pickling process in an acid bath containing an oxidant in order to enhance the pickling kinetics, wherein at least one peroxygenated derivative of titanium or at least of one element of the titanium family included in the product to be pickled is formed, the metal being ionized to a higher valency, the formation of the peroxygenated compound is controlled by measurement of the redox potential, and the quantity of oxidizing agent is limited so as to maintain an oxido-reduction potential lower than the passivation potential of the metallic product.