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. 05, 2025
Filed:
Jun. 30, 2021
Applicant:
Siltronic Ag, Munich, DE;
Inventors:
Sergiy Balanetskyy, Freiberg, DE;
Toni Lehmann, Oederan, DE;
Karl Mangelberger, Ach, AT;
Dirk Zemke, Ach, AT;
Assignee:
SILTRONIC AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B 29/06 (2006.01); C30B 25/18 (2006.01); C30B 33/10 (2006.01); G01N 21/95 (2006.01); C30B 15/00 (2006.01);
U.S. Cl.
CPC ...
C30B 29/06 (2013.01); C30B 25/186 (2013.01); C30B 33/10 (2013.01); G01N 21/9501 (2013.01); C30B 15/00 (2013.01);
Abstract
A crystal piece of monocrystalline silicon suitable for the production of semiconductor wafers has a length of not less than 8 cm and not more than 50 cm and a diameter of not less than 280 mm and not greater than 320 mm, wherein the fraction of the semiconductor wafers produced therefrom that are free from pinholes having a size of not more than 30 μm is greater than 98%.