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:
May. 08, 2018
Filed:
Mar. 20, 2014
Applicant:
Wacker Chemie Ag, Munich, DE;
Inventors:
Harald Hertlein, Burghausen, DE;
Friedrich Popp, Ooltewath, TN (US);
Assignee:
WACKER CHEMIE AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B 3/08 (2006.01); B08B 3/10 (2006.01); B08B 3/04 (2006.01); C01B 33/035 (2006.01); B08B 1/00 (2006.01); C01B 33/02 (2006.01);
U.S. Cl.
CPC ...
B08B 3/08 (2013.01); B08B 1/00 (2013.01); B08B 3/04 (2013.01); B08B 3/10 (2013.01); C01B 33/02 (2013.01); C01B 33/035 (2013.01);
Abstract
Contamination of surfaces of polysilicon rods removed from a Siemens reactor in a polysilicon production facility is reduced by cleaning the production facility at least every other week with a cleaning liquid containing water, optionally also containing neutral surfactants.