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:
Sep. 12, 2000
Filed:
Nov. 25, 1997
Applicant:
Inventors:
Wilfried Von Ammon, Burghausen, DE;
Erich Tomzig, Burgkirchen, DE;
Paul Fuchs, Schalchen, AT;
Yuri Gelfgat, Riga, LV;
Assignee:
Wacker Siltronic Gesellschaft fur Halbleitermaterialien AG, Burghausen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B / ;
U.S. Cl.
CPC ...
117 13 ; 117 30 ; 117217 ; 117932 ;
Abstract
A process for producing a silicon single crystal by the Czochralski method, utilizes a heater which is intended for heating a silicon-filled crucible and is arranged below the crucible. The process has energy delivered to the melt at least some of the time inductively using a coiled heater arranged under the crucible. The heater is in the form of a wound coil.