Patents by Inventor Nathalie Letzelter

Nathalie Letzelter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20060281654
    Abstract: Detergent or bleach composition comprising a host-guest complex of diacyl and/or tetraacyl peroxide bleaching species in the form of an aggregate having a weight average particle size of at least 106 ?m and an anti-deposition polymer.
    Type: Application
    Filed: May 26, 2006
    Publication date: December 14, 2006
    Inventors: Anju Deepali Brooker, Alan Brooker, Julie Ellis, Nathalie Letzelter, Andrew Nelson, Eric Robles, Nigel Somerville Roberts, Xinbei Song
  • Publication number: 20060199753
    Abstract: Detergent or bleach composition for use in automatic dishwashing comprising a colour stain cleaning system comprising diacyl and/or tetraacyl peroxide bleaching species and a co-bleaching surfactant wherein the diacyl peroxide bleaching species is selected from diacyl peroxides of the general formula: R1—C(O)—OO—(O)C—R2 in which R1 represents a C6-C18 alkyl group and R2 represents an aliphatic group compatible with a peroxide moiety, such that R1 and R2 together contain a total of 8 to 30 carbon atoms; the tetraacyl peroxide bleaching species is selected from tetraacyl peroxides of the general formula: R3—C(O)—OO—C(O)—(CH2)n—C(O)—OO—C(O)—R3 in which R3 represents a C1-C9 alkyl group and n represents an integer from 2 to 12; and wherein the co-bleaching surfactant comprises a cleaning surfactant selected from ethoxylated alcohols, amine oxide surfactants and mixtures thereof.
    Type: Application
    Filed: March 7, 2006
    Publication date: September 7, 2006
    Inventors: Anju Deepali Brooker, Alan Brooker, Julie Ellis, Nathalie Letzelter, Andrew Nelson, Eric Robles, Nigel Somerville Roberts
  • Publication number: 20060199754
    Abstract: Detergent or bleach composition comprising a host-guest complex of diacyl and/or tetraacyl peroxide bleaching species in the form of an aggregate having a weight average particle size of at least 106 ?m wherein the diacyl peroxide bleaching species is selected from diacyl peroxides of the general formula: R1—C(O)—OO—(O)C—R2 in which R1 represents a C6-C18 alkyl group and R2 represents an aliphatic group compatible with a peroxide moiety, such that R1 and R2 together contain a total of 8 to 30 carbon atoms; the tetraacyl peroxide bleaching species is selected from tetraacyl peroxides of the general formula: R3—C(O)—OO—C(O)—(CH2)n—C(O)—OO—C(O)—R3 in which R3 represents a C1-C9 alkyl group and n represents an integer from 2 to 12.
    Type: Application
    Filed: March 7, 2006
    Publication date: September 7, 2006
    Inventors: Anju Brooker, Alan Brooker, Julie Ellis, Nathalie Letzelter, Andrew Nelson, Eric Robles, Nigel Somerville Roberts
  • Publication number: 20050170996
    Abstract: The present invention relates to an auxiliary composition, for use in the laundering or treatment of fabrics, comprising a co-particulate admix, the co-particulate admix comprises: (i) clay; and (ii) a hydrophobic component; and (iii) a charged polymeric fabric-softening boosting component; wherein the auxiliary composition further comprises a flocculating aid and optionally one or more adjunct components.
    Type: Application
    Filed: February 3, 2005
    Publication date: August 4, 2005
    Inventors: Kevin Blyth, Andrew Graydon, Nathalie Letzelter, Glenn Ward, Kevin Kott
  • Publication number: 20050020476
    Abstract: Softening-through-the-wash compositions (“STW compositions”) are added to the wash cycle of a laundering process to soften fabrics. The STW compositions of the present invention comprise a particulate fabric softening active having an average particle size of less than about 800 microns in diameter. The STW compositions are substantially free of detersive surfactants and silicone materials. The STW compositions can further comprise a particulate co-softening compound having an average particle size of less than about 800 microns in diameter. The STW compositions comprise an effective amount of the particulate fabric softening active and optional particulate co-softening compound to provide a concentration of the fabric softening active and optional co-softening compound of at least about 50 parts per million when the STW composition is dispensed in a wash solution of the laundering process. Processes to make these STW compositions are also encompassed in the present invention.
    Type: Application
    Filed: June 9, 2004
    Publication date: January 27, 2005
    Inventors: Errol Wahl, Adrian John Angell, Fiona Williams, Nathalie Letzelter, Barbara Williams, Gary Keitel