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:
Sep. 20, 1988
Filed:
Aug. 15, 1986
Applicant:
Inventors:
Gerhard Bruckmann, Puttlingen, DE;
Johann Kemmer, Rodermark, DE;
Felix Muller, Gelnhausen, DE;
Detley Schlebusch, Wollstadt, DE;
Ulrich Hensgen, Hammersbach, DE;
Assignee:
Leybold-Heraeus GmbH, Cologne, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F27D / ;
U.S. Cl.
CPC ...
373141 ;
Abstract
Process for melting down and degassing lumpy material by means of inductive heating and under subatmospheric pressure in a melting crucible. For the purpose of shortening the duration of the process, scavenging gas and/or reaction gas is introduced into the bottom region of the melting crucible during at least 50% of the duration of the process until the material is melted down completely.