Patent number: 11834634
Abstract: A phosphate-free automatic dishwashing cleaning composition comprising i) a protease wherein the protease is a variant having at least 60% identity with the amino acid sequence of SEQ ID NO:1 and comprising at least one amino acid substitution (using the SEQ ID NO: 1 numbering) selected from the group consisting of X54T; X126A, D, G, V, E, K, I; X127E, S, T, A, P, G, C; and X128E, C, T, D, P, G, L, Y, N; and ii) from 10 to 50% by weight of the composition of a complexing agent system comprising from 0 to less than 30% by weight of the composition of citric acid.
Type:
Grant
Filed:
December 12, 2018
Date of Patent:
December 5, 2023
Assignee:
The Procter & Gamble Company
Inventors:
Michelle Jackson, Eva Maria Perez-Prat de Vinuesa, David John Tarbit, Philip Frank Souter, Lilia Maria Babe, David Aaron Estell, Frits Goedegebuur, Harm Jan Mulder, Sina Pricelius, Lydia Dankmeyer, Thijs Kaper, Hatice Billur Engin