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:
May. 06, 2003
Filed:
Mar. 16, 2001
Applicant:
Inventors:
Leonid N. Shekhter, Newton, MA (US);
Terrance B. Tripp, Westboro, MA (US);
Leonid L. Lanin, Belmont, MA (US);
Karlheinz Reichert, Wolfenbuttel, DE;
Oliver Thomas, Bad Harzburg, DE;
Joachim Vieregge, Goslar, DE;
Assignee:
H.C. Starck, Inc., Newton, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 1/00 ; B22F 3/00 ;
U.S. Cl.
CPC ...
B22F 1/00 ; B22F 3/00 ;
Abstract
Metal powder Ta and/or Nb, with or without one or metals from the group Ta, Nb, Ti, Mo, W, V, Zr and Hf, is made in a fine powder form by reduction of metal oxide by contact with a gaseous reducing agent, preferably an alkaline earth metal, to near complete reduction, leaching, further deoxidation and agglomeration, the powder so produced being sinterable to capacitor anode form and processable to other usages.