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. 06, 2018
Filed:
Dec. 11, 2014
Applicant:
Wacker Chemie Ag, Munich, DE;
Inventors:
Rainer Hauswirth, Kirchdorf, DE;
Robert Enggruber, Burghausen, DE;
Assignee:
WACKER CHEMIE AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D 7/00 (2006.01); C01B 33/03 (2006.01); B01F 5/24 (2006.01); B05D 1/22 (2006.01);
U.S. Cl.
CPC ...
C01B 33/03 (2013.01); B01F 5/247 (2013.01); B05D 1/22 (2013.01);
Abstract
Segregation of silicon granules in the fluidized bed production of polycrystalline silicon is achieved by successively transferring granular polycrystalline silicon through a plurality of vessels designed for funnel flow of granular material. The transfers may occur prior to introduction of feed particles into the reactor, or the enlarged granules from the reactor may be thus transferred to improve product size uniformity.