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:
Aug. 13, 2019
Filed:
Oct. 12, 2015
Heraeus Deutschland Gmbh & Co. Kb, Hanau, DE;
Christoph Roehlich, Hanau, DE;
Vasco Thiel, Alzenau, DE;
Stefanie Fuchs-Alameda, BiebergemĂĽnd, DE;
Jan Schapp, Potsdam, DE;
Steffen Voss, Limeshain, DE;
HERAEUS DEUTSCHLAND GMBH & CO. KG, Hanau, DE;
Abstract
Process for removing precious metal from precious metal-containing catalyst form bodies comprising form bodies and precious metal, whereby the precious metal to be removed is at least one precious metal selected from the group consisting of Au, Ag, Pd, Pt, Ir, Rh, Ru, Os, and Re, comprising the steps of: (a) producing a mixture of precious metal-containing catalyst form bodies in at least one mineral acid that is at least 1N; (b) supplying inert or oxidizing gas into the mixture containing noble metal-containing catalyst form bodies and mineral acid; (c) introducing at least one oxidation agent, in solid or liquid form, into the mixture containing noble metal-containing catalyst form body and mineral acid; and (d) separating the form bodies from the liquid.