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. 20, 1980
Filed:
Mar. 09, 1978
Applicant:
Inventors:
Heinrich-Otto Rossner, Essen, DE;
Henri F Seelig, Essen, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
75 12 ;
Abstract
Method for producing steel from sponge metal with the use of a gas plasma in a melting vessel containing a metal bath. The sponge metal is fed into the melting vessel and is melted directly by the plasma without the addition of base or acid means. The slag produced from the melting of the sponge metal is removed continuously from the metal bath.