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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.:

US 4919845 B1

PDFFull Text
Date of Patent:
Apr. 24, 1990

Filed:

Jul. 07, 1989

Phosphate-free detergent having a reduced tendency towards incrustation

Applicant:
Inventors:

Guenther Vogt, Toenisvorst, DE;

Hans Andree, Leichlingen, DE;

Gertrud Nienhaus, Duesseldorf, DE;

Assignee:

Henkel Kommanditgesellschaft auf Aktien, Duesseldorf, DE;

Attorneys:

Szoke; Ernest G.

Jaeschke; Wayne C.

Grandmaison; Real J.

Primary Examiner:

Dennis Albrecht

Int. Cl.
CPC ...
C11D / ; C11D / ; C11D / ; C11D / ;
U.S. Cl.
CPC ...
252526 ; 252109 ; 252110 ; 252131 ; 252135 ; 252140 ; 252155 ; 25217414 ; 25217416 ; 25217424 ; 25217425 ; 252179 ; 252180 ; 252539 ; 252540 ; 252D / ; 252D / ;
Abstract

A detergent composition containing by weight (a) from 5 to 35% of an anionic or nonionic surfactant, (b) from 10 to 40% of finely crystalline zeolite, (c) from 4 to 20% of alkali metal silicate or carbonate and from 0.1 to 5% of (d) aminoalkanephosphonate or (d2) copolymer of (meth)acrylic acid and maleic acid and (e) from 5 to 80% of other detergent constituents is considerably improved in regard to its incrustation-inhibiting properties if it additionally contains (f) from 0.05 to 1% (based on the free acid) of 1-hydroxyethane-1,1-diphosphonic acid in the form of its alkali metal salt. The weight ratio of (d1) to (f) is from 3:1 to 1:6 and of (d2) to (f) is from 40:1 to 2:1.

Find Patent Forward Citations

Vogt, Guenther. (1990). Phosphate-free detergent having a reduced tendency towards incrustation (U.S. Patent No. 4919845). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4919845

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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