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. 04, 2002
Filed:
Dec. 21, 1999
Applicant:
Inventors:
Jovan Starcevic, Vienna, AT;
Dietfried Gamsriegler, Neustadt, AT;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
C23G 1/02 ;
U.S. Cl.
CPC ...
C23G 1/02 ;
Abstract
Stainless steel is pickled by a chemical and/or electrochemical pickling process using an acid liquid, containing substantially no nitric acid. The process uses a spent electrolyte solution from an electrochemical, neutral salt pickling tank, such as a sodium sulfate pickling tank. The spent electrolyte solution is added to an acid solution to form a pickling acid capable of pickling stainless steel, oxidizing Fe to Fe and reducing Cr to Cr .