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. 03, 2018
Filed:
Nov. 19, 2015
Applicant:
Siltronic Ag, Burghausen, DE;
Inventors:
Georg Raming, Tann, DE;
Ludwig Altmannshofer, Lenggries, DE;
Gundars Ratnieks, Burghausen, DE;
Martin Moeller, Haiming, DE;
Frank Muemmler, Emmerting, DE;
Assignee:
SILTRONIC AG, Burghausen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B 13/26 (2006.01); C30B 13/32 (2006.01); C30B 13/20 (2006.01); C30B 29/06 (2006.01);
U.S. Cl.
CPC ...
C30B 13/32 (2013.01); C30B 13/20 (2013.01); C30B 13/26 (2013.01); C30B 29/06 (2013.01);
Abstract
A single crystal is grown in a float zone which is inductively heated and the crystallizing single crystal is rotated in a direction of rotation which is periodically reversed at intervals in accordance with an alternating plan, wherein a dwell time during which the single crystal is in a state of rest because of the reversal of the direction of rotation is limited to no more than 60 ms.