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:
Feb. 18, 1997
Filed:
Sep. 18, 1995
Applicant:
Inventor:
Gordon M Cameron, Willowdale, CA;
Assignee:
Cecebe Technologies Inc., Willowdale, CA;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210665 ; 210668 ; 210669 ; 210673 ; 210683 ; 423531 ; 159 473 ;
Abstract
A process for concentrating a waste sulphuric acid stream containing metal sulphates including iron sulphate comprises the steps of subjecting the stream to an ion exchange operation to produce an acid-rich stream and a salt-rich stream and, concentrating the acid-rich stream to produce a concentrated sulphuric acid stream.