Patents by Inventor Nathalie Sophie Letzelter

Nathalie Sophie 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).

  • Detergent compositions
    Patent number: 6730656
    Abstract: A solid detergent composition comprising a clay system, said clay system comprises a hectorite clay and a dioctahedral smectite clay, wherein the weight ratio of said hectorite clay to said dioctahedral smectite clay is less than 1:1. The two clay types may be present in a solid detergent composition in the form of an agglomerate.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: May 4, 2004
    Assignee: The Procter & Gamble Company
    Inventors: Richard Timothy Hartshorn, Alison Lesley Main, Nathalie Sophie Letzelter, Barry Thomas Ingram
  • Detergent compositions
    Publication number: 20040005993
    Abstract: A solid detergent composition comprising a clay system, said clay system comprises a hectorite clay and a dioctahedral smectite clay, wherein the weight ratio of said hectorite clay to said dioctahedral smectite clay is less than 1:1. The two clay types may be present in a solid detergent composition in the form of an agglomerate.
    Type: Application
    Filed: March 12, 2003
    Publication date: January 8, 2004
    Applicant: The Procter & Gamble Company
    Inventors: Richard Timothy Hartshorn, Alison Lesley Main, Nathalie Sophie Letzelter, Barry Thomas Ingram
  • Solid detergent compositions comprising an organophilic smectite clay
    Patent number: 6627598
    Abstract: The present invention relates to detergent compositions which comprise a flocculating agent and an organophilic smectite clay whereof at least 30%, preferably at least 40% of the exchangeable cations in the clay is replaced by one or more long-chain organic cations, preferably having at least one long carbon chain of at least 10 or even 12 carbon atoms. The compositions provide improved fabric softening and deliver good cleaning.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: September 30, 2003
    Assignee: The Procter & Gamble Company
    Inventors: Barry Thomas Ingram, Stephen Wayne Heinzman, Nathalie Sophie Letzelter, Robin Gibson Hall
  • Softening-through-the-wash composition
    Publication number: 20030130152
    Abstract: The present invention relates to a softening-through-the-wash composition comprising:
    Type: Application
    Filed: December 5, 2002
    Publication date: July 10, 2003
    Applicant: The Procter & Gamble Company
    Inventors: Stephen Wayne Heinzman, Nathalie Sophie Letzelter, Fiona Susan Williams, Leanne Bolton