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. 22, 2014
Filed:
May. 27, 2009
Applicants:
Rainer Gassen, Fürth, DE;
Christoph Stiepani, Fürth, DE;
Horst-otto Bertholdt, Forchheim, DE;
Bertram Zeiler, Bischberg, DE;
Inventors:
Rainer Gassen, Fürth, DE;
Christoph Stiepani, Fürth, DE;
Horst-Otto Bertholdt, Forchheim, DE;
Bertram Zeiler, Bischberg, DE;
Assignee:
Areva GmbH, Erlangen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C23G 1/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for decontaminating nuclear plant surfaces, which have been contaminated with alpha emitters, is carried out subsequently to a decontamination process which is aimed at the removal of oxide layers. The surfaces are treated with an aqueous solution which contains a cationic or zwitterionic surfactant and oxalic acid. At least a part of the solution, after having acted on a surface, is conducted across an ion exchanger.