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. 07, 1991
Filed:
May. 01, 1990
Applicant:
Inventors:
Ingo Schwirtlich, Krefeld, DE;
Peter Woditsch, Krefeld, DE;
Assignee:
Bayer Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C30B / ;
U.S. Cl.
CPC ...
1566162 ; 1566164 ;
Abstract
A process for the production of columnlarly solidified metallic bodies by melting metal and then solidifying said metal in a crucible, wherein the dissipation of heat is greater at the upper or lower end of the crucible than at the sides, which comprises supplying heat to the verticals sides through a heating element having a plurality of individually controlled heating sections in such a quantity that a melt of the metal is formed and then establishing directional solidification by establishing a temperature gradient by varying the heat output among the heating sections of the heating element by switching.