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:
Aug. 23, 2016
Filed:
Dec. 05, 2012
Siltronic Ag, Munich, DE;
Georg Raming, Tann, DE;
Ludwig Altmannshofer, Lenggries, DE;
Gundars Ratnieks, Burghausen, DE;
Johann Landrichinger, Burgkirchen, AT;
Josef Lobmeyer, Bad Fuessing, DE;
Alfred Holzinger, Handenberg, AT;
SILTRONIC AG, Munich, DE;
Abstract
Single crystals are produced by means of the floating zone method, wherein the single crystal crystallizes below a melt zone at a crystallization boundary, and the emission of crystallization heat is impeded by a reflector surrounding the single crystal, wherein the single crystal is heated in the region of an outer edge of the crystallization boundary by means of a heating device in a first zone, wherein a distance Δ between an outer triple point Tat the outer edge of the crystallization boundary and a center Z of the crystallization boundary is influenced. An apparatus for producing the single crystal provides a heat source below the melting induction coil and above the reflector.