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. 29, 2013
Filed:
Jul. 06, 2009
Applicants:
Pierre-antoine Andreani, Etampes, FR;
Bruno Pellerin, Avon, FR;
Karen Ayme, Pithiviers, FR;
Inventors:
Assignee:
Chryso, , FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 24/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to an additive for reducing Cr(VI) ions to Cr(III) ions, comprising a complex of tin(II) and a carboxylic acid or a salt thereof, and to the process for the preparation thereof. It also relates to a process for preparing a material having a low chromium(VI) content. Finally, it relates to the use of said additive for reducing chromium(VI) ions to chromium(III) ions.