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. 19, 1994
Filed:
Jan. 21, 1993
Applicant:
Inventors:
Kirk A Cronin, Freeland, MI (US);
William A Evanko, Golden, CO (US);
Alireza Malekadeli, Midland, MI (US);
Assignee:
Dow Corning Corporation, Midland, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423488 ; 423481 ; 210692 ; 210670 ; 210674 ;
Abstract
A process is described by which numerous waste or by-product aqueous hydrochloric acid streams can be purified by contacting the aqueous hydrochloric acid with a polystyrenic based resin to remove silicon containing impurities and thereby allowing the hydrochloric acid to be re-used for various applications.