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:
Jul. 24, 2012
Filed:
Nov. 12, 2010
Applicants:
Viktor Stoller, Bad Harzburg, DE;
Michael Erb, Salzgitter, DE;
Juliane Meese-marktscheffel, Goslar, DE;
Michael Lohse, Goslar, DE;
Wolfgang Mathy, Langelsheim, DE;
Inventors:
Viktor Stoller, Bad Harzburg, DE;
Michael Erb, Salzgitter, DE;
Juliane Meese-Marktscheffel, Goslar, DE;
Michael Lohse, Goslar, DE;
Wolfgang Mathy, Langelsheim, DE;
Assignee:
H.C. Starck GmbH, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G 41/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention is directed to a method for the production of ammonium paratungstate tetrahydrate by thermal treatment of ammonium paratungstate decahydrate in an aqueous suspension. The ammonium paratungstate tetrahydrate can be produced with high purity and high yield. The production method may furthermore be carried out in a simple and energy-efficient manner.