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:
Nov. 24, 2020
Filed:
May. 17, 2017
Applicant:
Siltronic Ag, Munich, DE;
Inventors:
Walter Heuwieser, Stammham, DE;
Dieter Knerer, Haiming, DE;
Werner Schachinger, Simbach, DE;
Masamichi Ookubo, Yamaguchi, JP;
Assignee:
SILTRONIC AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B 15/14 (2006.01); C30B 15/04 (2006.01); C30B 15/20 (2006.01); C30B 15/30 (2006.01); C30B 29/06 (2006.01); C30B 30/04 (2006.01);
U.S. Cl.
CPC ...
C30B 15/04 (2013.01); C30B 15/14 (2013.01); C30B 15/203 (2013.01); C30B 15/305 (2013.01); C30B 29/06 (2013.01); C30B 30/04 (2013.01);
Abstract
Single crystal semiconductor wafers comprise oxygen and an n-type dopant, and are produced by a process comprising providing a silicon melt containing n-type dopant in a quartz crucible, the melt having an initial height hM;