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. 06, 1993
Filed:
Oct. 31, 1991
Applicant:
Inventor:
Johannes Greefkes, Beverwijk, NL;
Assignee:
Hoogovens Groep B.V., Ijmuiden, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
42324301 ; 42324308 ;
Abstract
A waste gas from a chemical process is treated to remove undesirable substances, especially sulphur dioxide, by contacting said waste gas with acidic solution, e.g. industrial waste solution, at pH less than 2 to effect pre-cleaning, and then contacting said waste gas with alkaline solution e.g. seawater.