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:
Apr. 01, 1986
Filed:
Aug. 08, 1983
Applicant:
Inventor:
Wolfgang Keller, Munich, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ; C30B / ;
U.S. Cl.
CPC ...
422250 ; 219 1075 ;
Abstract
Apparatus for crucible-free zone melting an end-supported semiconductor rod, including an RF generator having a resonant circuit for determining the generator frequency, the resonant circuit having connected therein a tank-circuit coil and a tank-circuit capacitor, and an induction heating coil fed by the RF generator and annularly surrounding the semiconductor rod, the tank-circuit coil being formed as a primary winding to the induction heating coil acting as a secondary winding, both the tank circuit coil and the induction heating coil forming a structural unit having a fixed magnetic coupling.