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:
Jul. 13, 2021
Filed:
Mar. 15, 2016
Applicants:
Siltronic Ag, Munich, DE;
Wacker Chemie Ag, Munich, DE;
Inventors:
Andreas Bergmann, Kastl, DE;
Thomas Buschhardt, Burghausen, DE;
Simon Ehrenschwendtner, Winhoering, DE;
Christian Fraunhofer, Mitterskirchen, DE;
Assignees:
SILTRONIC AG, Munich, DE;
WACKER CHEMIE AG, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B07B 13/07 (2006.01); B07B 1/12 (2006.01); B07B 1/46 (2006.01); B07B 1/28 (2006.01);
U.S. Cl.
CPC ...
B07B 13/07 (2013.01); B07B 1/12 (2013.01); B07B 1/28 (2013.01); B07B 1/46 (2013.01);
Abstract
Polysilicon chunks or granules are classified into size fractions using a mechanical screen having a profiled surface having peaks and valleys, and terminating in widening slots through which a polysilicon size fraction falls. The device is effective and the slots are resistant to clogging.