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:
Dec. 24, 2019
Filed:
Mar. 01, 2017
Applicant:
Wacker Chemie Ag, Munich, DE;
Inventors:
Gerhard Forstpointner, Kastl, DE;
Bernhard Baumann, Emmerting, DE;
Assignee:
WACKER CHEMIE AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 8/00 (2006.01); B01J 8/18 (2006.01); C01B 33/027 (2006.01); F16K 7/04 (2006.01); B01J 19/02 (2006.01);
U.S. Cl.
CPC ...
B01J 8/0035 (2013.01); B01J 8/0015 (2013.01); B01J 8/1827 (2013.01); B01J 8/1872 (2013.01); B01J 19/02 (2013.01); C01B 33/027 (2013.01); F16K 7/04 (2013.01); B01J 2208/00548 (2013.01); B01J 2208/00752 (2013.01); B01J 2208/00761 (2013.01); B01J 2208/00769 (2013.01); B01J 2208/00796 (2013.01); B01J 2219/0245 (2013.01); B01J 2219/0295 (2013.01);
Abstract
Control of the flow of granular polysilicon granules is effected by employing an elastomeric pinch sleeve valve. The flow control by this method is especially useful for controlling the flow of silicon seed particles and granular polysilicon product in the fluidized bed method for producing polysilicon. The flow may be stopped without gas leakage, and is suitable for use over long operating campaigns.