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:
Dec. 03, 1996
Filed:
May. 26, 1995
Applicant:
Inventors:
Ben L Feringa, Groningen, NL;
Marcel Lubben, Groningen, NL;
Roelant M Hermant, Leiden, NL;
Robin S Twisker, Rotterdam, NL;
Lawrence Que, Jr, Roseville, MN (US);
Assignee:
Lever Brothers Company, Division of Conopco, Inc., New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C11D / ; C11D / ; C11D / ; C11D / ;
U.S. Cl.
CPC ...
510311 ; 25218642 ; 25218643 ;
Abstract
A bleach and oxidation catalyst is provided comprising a catalytically active iron complex which can activate hydrogen peroxide or peroxy acids and was found to have both favourable stain removal and remarkable dye transfer inhibition properties. In addition, a considerably improved stability of these compounds in alkaline aqueous environment has been obtained, in particular at the peroxy compound concentrations generally present in the fabric washing liquor.