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:
Jan. 15, 2013
Filed:
Aug. 17, 2011
Rainer Gassen, Fuerth, DE;
Luis Sempere Belda, Erlangen, DE;
Werner Schweighofer, Erlangen, DE;
Bertram Zeiler, Bischberg, DE;
Rainer Gassen, Fuerth, DE;
Luis Sempere Belda, Erlangen, DE;
Werner Schweighofer, Erlangen, DE;
Bertram Zeiler, Bischberg, DE;
Areva NP GmbH, Erlangen, DE;
Abstract
A process is provided for chemically decontaminating the surface of a metallic component. In a first treatment step, an oxide layer formed on the component by corrosion of the material of the component is detached from the surface of the component with a first aqueous treatment solution containing an organic decontamination acid. In a subsequent second treatment step, the surface which is at least partially freed of the oxide layer is treated with an aqueous solution containing an active component for removing particles which adhere to the surface. The active component is formed of at least one anionic surfactant from the group including sulphonic acids, phosphonic acids, carboxylic acids and salts of those acids.