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:
May. 20, 2014
Filed:
Nov. 02, 2010
Stefan Faβbender, Speyer, DE;
Peter Petersen, Dannstadt-Schauernheim, DE;
Arnulf Lauterbach, Ludwigshafen, DE;
Günter Renz, Freinsheim, DE;
Frieder Borgmeier, Mannheim, DE;
Peter Kolb, Ludwigshafen, DE;
Stefan Faβbender, Speyer, DE;
Peter Petersen, Dannstadt-Schauernheim, DE;
Arnulf Lauterbach, Ludwigshafen, DE;
Günter Renz, Freinsheim, DE;
Frieder Borgmeier, Mannheim, DE;
Peter Kolb, Ludwigshafen, DE;
BASF SE, Ludwigshafen, DE;
Abstract
A method for handling aqueous solutions of methanesulfonic acid (MSA) having a concentration from 50 to 99% by weight of MSA and a total chlorine content of less than 50 mg/kg in apparatuses in which the aqueous MSA solution is in contact with steel surfaces. The steel comprises austenitic steels having a chromium content of from 15 to 22% by weight and a nickel content of from 9 to 15% by weight.