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. 11, 1980
Filed:
Jul. 18, 1978
Applicant:
Inventors:
Bruno Krismer, Goslar, DE;
Harmut Pungs, Laufenburg, DE;
Assignee:
Hermann C. Starck Berlin, Berlin, DE;
Primary Examiner:
Int. Cl.
CPC ...
C22B / ; C21B / ; C22B / ;
U.S. Cl.
CPC ...
75 1 / ; 75 27 ; 75257 ;
Abstract
A process for obtaining metal rich in tantalum and niobium from ore having a high titanium content comprising stepwise electrothermal ore reduction in the presence of aluminum, calcium oxide and barium sulfate.