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. 24, 2012
Filed:
May. 06, 2008
Applicants:
Jean-luc Roth, Thionville, FR;
Marie Bontemps, Luxembourg, LU;
Inventors:
Jean-Luc Roth, Thionville, FR;
Marie Bontemps, Luxembourg, LU;
Assignee:
Paul Wurth S.A., Luxembourg, LU;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G 9/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention describes a method for treating residues comprising zinc ferrites and non-ferrous metals selected from among the group made up of lead (Pb), silver (Ag), indium (In), germanium (Ge) and gallium (Ga) or mixtures thereof in the form of oxides and sulfates, comprising the following steps: