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:
Oct. 08, 2002
Filed:
Apr. 13, 2001
Applicant:
Inventors:
Martin Weber, Kastl, DE;
Erich Gmeilbauer, St. Pantaleon, AT;
Robert Vorbuchner, Burghausen, DE;
Alfred Miller, Emmerting, DE;
Assignee:
Wacker Siltronic Gesellschaft fur Halbleitermaterialien AG, Burghausen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 2/326 ;
U.S. Cl.
CPC ...
C01B 2/326 ;
Abstract
A single-crystal rod, obtained using CZ crucible pulling, has a crystal cone and a cylindrical single-crystal rod, and the crystal cone has an apex angle of 30° to 90°. There is also a process for producing dislocation-free single-crystal rods using CZ crucible pulling in which a seed crystal is immersed in a melt and is pulled out again, and a cone with an apex angle of from 30° to 90° is pulled.