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:
Aug. 18, 2009
Karsten Beck, Goslar, DE;
Hady Seyeda, Vienenburg, DE;
Klaus Lerch, Kaarst, DE;
Bianca Agnes Balan, Braunschweig, DE;
Karsten Beck, Goslar, DE;
Hady Seyeda, Vienenburg, DE;
Klaus Lerch, Kaarst, DE;
Bianca Agnes Balan, Braunschweig, DE;
H.C. Starck GmbH, Goslar, DE;
Abstract
A process for the production of a valve metal oxide powder, in particular an NbOor TaOpowder by continuous reaction of a fluoride-containing valve metal compound with a base in the presence of water and calcination of the resultant product, wherein the reaction is performed in just one reaction vessel and at a temperature of at least 45° C. Valve metal oxide powders obtainable in said manner which exhibit a spherical morphology, a Dvalue of 10 to 80 μm and an elevated BET surface area.