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:
Sep. 18, 2018
Filed:
Jan. 16, 2015
Applicant:
Wacker Chemie Ag, Munich, DE;
Inventors:
Stefan Faerber, Tussling, DE;
Andreas Bergmann, Kastl, DE;
Reiner Pech, Neuoetting, DE;
Siegfried Riess, Tarsdorf, AT;
Assignee:
WACKER CHEMIE AG, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 33/035 (2006.01); C30B 15/36 (2006.01);
U.S. Cl.
CPC ...
C01B 33/035 (2013.01); C30B 15/36 (2013.01);
Abstract
Production of highly pure comminuted polycrystalline silicon from polycrystalline silicon rods produced by the Siemens process is facilitated by removal of graphite residues from the electrode ends of the rods by removing the contaminated end portions by means of mechanical impulses.