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:
Apr. 13, 1993
Filed:
Sep. 03, 1992
Applicant:
Inventors:
Wolf-Dieter Kermer, Fussgoenheim, DE;
Ingrid Steenken-Richter, Ludwigshafen, DE;
Juergen Paulig, Limburgerhof, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshaften, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210634 ; 210917 ; 8440 ;
Abstract
Metal complex dyes which are free of reactive groups and have at least one hydroxysulfonyl group are removed from wastewaters by means of amines of at least 6 carbon atoms in the presence or absence of water-immiscible inert organic solvents.