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:
Mar. 01, 2011
Filed:
Sep. 24, 2005
Applicants:
Helmut Haas, Achim, DE;
Ulrich Bartmann, Goslar, DE;
Inventors:
Helmut Haas, Achim, DE;
Ulrich Bartmann, Goslar, DE;
Assignee:
H. C. Starck GmbH, Goslar, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01G 9/042 (2006.01);
U.S. Cl.
CPC ...
Abstract
A tantalum powder consisting of agglomerated primary particle with a minimum primary particle dimension of 0.2 to 0.8 μm, a specific surface area of 0.9 to 2.5 m/g and a particle size distribution determined to ASTM B 822 corresponding to a D10 value of 5 to 25 μm, a D50 value of 20 to 140 μm and a D90 value of 40 to 250 μm, wherein the powder does not comprise an effective content of sintering protection agents.