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. 03, 2018
Filed:
Mar. 15, 2013
Applicant:
Memc Electronic Materials, Inc., St. Peters, MO (US);
Inventors:
Assignee:
CORNER STAR LIMITED, Hong Kong, HK;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 33/107 (2006.01);
U.S. Cl.
CPC ...
C01B 33/10778 (2013.01); C01B 33/107 (2013.01);
Abstract
Methods for purifying a halosilane-containing process stream include a process stream purified by removing arsenic and phosphorous impurities by use of distillation.