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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.:

US 6136062 B1

PDFFull Text
Date of Patent:
Oct. 24, 2000

Filed:

Sep. 21, 1999

Niobium powder and a process for the production of niobium and/or

Applicant:
Inventors:

Josua Loffelholz, Langelsheim, DE;

Frank Behrens, Goslar, DE;

Assignee:

H. C. Starck GmbH & Co. KG, Goslar, DE;

Attorneys:

Perkins, Smith & Cohen

Cohen; Jerry

Primary Examiner:

Ngoclan Mai

Int. Cl.
CPC ...
B22F / ;
U.S. Cl.
CPC ...
75369 ; 75622 ; 75228 ; 75368 ;
Abstract

The process comprises the reduction of niobium and/or tantalum oxides by means of alkaline earth metals and/or rare earth metals, wherein the first reduction stage is carried out as far as an average composition corresponding to (Nb, Ta)O.sub.x where x=0.5 to 1.5 and before the second stage the reduction product from the first stage is freed from alkaline earth oxides and/or rare earth metal oxides which are formed (and optionally from excess alkaline earth metal and/or rare earth metal) by washing with mineral acids.

Find Patent Forward Citations

Loffelholz, Josua. (2000). Niobium powder and a process for the production of niobium and/or (U.S. Patent No. 6136062). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6136062

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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