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:
Apr. 03, 2001
Filed:
Jan. 11, 1999
Ioannis Demertzis, Milan, IT;
Paolo Giordani, Crema, IT;
Cesare Pedrazzini, Milan, IT;
Maurizio Busnelli, Saronno, IT;
Other;
Abstract
Stainless steel pickling process in which a pickling solution containing HF and Fe,ions as essential components is used, and wherein the oxidation to Fe,of the Fe,formed during the process in order to maintain the Fe,concentration to the predetermined value, is electrolytically carried out by submitting the pickling solution as it is to an oxidation process in an electrolytic cell equipped with anode made of inalterable materials chosen among graphite, granular coal, lead and with cathodes made of stainless steel, graphite or other unalterable materials, said cell working with an applied tension between 1 and 8 V and with an anodic current density between 0.4 and 15 A/dm,.