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:
Jun. 04, 2013
Filed:
Sep. 23, 2011
Sven Albrecht, Goslar, DE;
Armin Olbrich, Seesen, DE;
Michael Reiβ, Bad Harzburg, DE;
Frank Schrumpf, Goslar, DE;
Juliane Meese-marktscheffel, Goslar, DE;
Uwe Kutzler, Bad Harzburg, DE;
Sven Albrecht, Goslar, DE;
Armin Olbrich, Seesen, DE;
Michael Reiβ, Bad Harzburg, DE;
Frank Schrumpf, Goslar, DE;
Juliane Meese-Marktscheffel, Goslar, DE;
Uwe Kutzler, Bad Harzburg, DE;
H.C. Starck GmbH, , DE;
Abstract
Process for the production of a powdered spherical tungstic acid by acidification of an aqueous alkaline tungstate solution with mineral acid at elevated temperature, preferably in a continuous stirred tank or a cascade of at least 2 continuous stirred tanks, and tungstic acid obtainable in this way, which is characterized by a high bulk density and spherical morphology.