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:
Jul. 12, 1977
Filed:
Jul. 16, 1975
Wolfgang Keller, Munich, DT;
Hans Stut, Grobenzell, DT;
Siemens Aktiengesellschaft, Berlin & Munich, DT;
Abstract
An apparatus for a floating zone melt processing of a semiconductor rod including a heating circuit comprised of an annular induction heating coil adapted to annularly encompass a zone of the semiconductor rod and upon activation to produce an annular melt zone on such rod, a plurality of ceramic capacitors positioned within a fluid-impermeable housing filled with a low viscosity dielectric cooling fluid, such as a transformer oil, and connected in parallel with the heating coil and hollow electric current conduits coupling the heating coil and the capacitors to the output circuit of a high frequency generator and to a hydraulic heat-exchange circuit.