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:
Jan. 19, 2016
Filed:
Apr. 23, 2013
Applicant:
Wacker Chemie Ag, Munich, DE;
Inventor:
Mikhail Sofin, Burghausen, DE;
Assignee:
WACKER CHEMIE AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 16/56 (2006.01); C23C 16/24 (2006.01); C01B 33/035 (2006.01);
U.S. Cl.
CPC ...
C23C 16/24 (2013.01); C01B 33/035 (2013.01); C23C 16/56 (2013.01); Y10T 428/298 (2015.01);
Abstract
Rod-type, polycrystalline silicon having a rod diameter of >100 mm are obtained by deposition of silicon-containing gas according to the Siemens method, wherein the Si rods are brought into contact with hydrogen at the end of the deposition process during cooling in the reactor, and the cooled Si rods obtained have in perpendicular cross section cracks and/or radial stresses having a defined size.