Patents by Inventor Karen Margaret PRESTON

Karen Margaret PRESTON 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).

  • Patent number: 10731106
    Abstract: A dishwashing composition including a copolymer including polyalkylene oxide groups and quaternary nitrogen atoms and more than 30% by weight of the composition of a complexing agent.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: August 4, 2020
    Assignee: The Procter & Gamble Company
    Inventors: Stefano Scialla, Rachel Elizabeth Martin, Karen Margaret Preston
  • Patent number: 10723979
    Abstract: A dishwashing composition including a copolymer including polyalkylene oxide groups and quaternary nitrogen atoms and a complexing agent system comprising citrate.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: July 28, 2020
    Assignee: The Procter & Gamble Company
    Inventors: Montserrat Guadalupe Vasquez Valdivieso, Rachel Elizabeth Martin, Karen Margaret Preston, Stefano Scialla
  • Publication number: 20200224125
    Abstract: A phosphate-free automatic dishwashing cleaning composition including from about 10% to about 60% by weight thereof of a builder system consisting of: i) a complexing agent selected from the group consisting of methyl glycine diacetic acid, its salts and derivatives thereof, glutamic-N,N-diacetic acid, its salts and derivatives thereof, iminodisuccinic acid, its salts and derivatives thereof, carboxy methyl inulin, its salts and derivatives thereof; and mixtures thereof; and ii) an itaconic/sulfonic polymer wherein the builder system comprises more than 40% by weight thereof of the complexing agent.
    Type: Application
    Filed: March 31, 2020
    Publication date: July 16, 2020
    Inventors: Rachel Elizabeth MARTIN, Karen Margaret PRESTON, Philip Frank SOUTER
  • Publication number: 20190106655
    Abstract: A dishwashing composition including a copolymer including polyalkylene oxide groups and quaternary nitrogen atoms and more than 30% by weight of the composition of a complexing agent.
    Type: Application
    Filed: October 2, 2018
    Publication date: April 11, 2019
    Inventors: Stefano SCIALLA, Rachel Elizabeth MARTIN, Karen Margaret PRESTON
  • Publication number: 20190106658
    Abstract: A dishwashing composition including a copolymer including polyalkylene oxide groups and quaternary nitrogen atoms and a complexing agent system comprising citrate.
    Type: Application
    Filed: October 2, 2018
    Publication date: April 11, 2019
    Inventors: Montserrat Guadalupe VASQUEZ VALDIVIESO, Rachel Elizabeth MARTIN, Karen Margaret PRESTON, Stefano SCIALLA
  • Publication number: 20190048290
    Abstract: A phosphate-free automatic dishwashing cleaning composition including a partially decarboxylated polyitaconic acid homopolymer.
    Type: Application
    Filed: August 9, 2018
    Publication date: February 14, 2019
    Inventors: Karen Margaret PRESTON, Michael VAN WASSENHOVEN, Philip Frank SOUTER, Rachel Elizabeth MARTIN
  • Publication number: 20180362889
    Abstract: The present invention relates to a phosphate-free automatic dishwashing cleaning composition including an alkaline-metal carbonate and a builder system consisting of: i) a complexing agent selected from the group consisting of methyl glycine diacetic acid, its salts and derivatives thereof, glutamic-N,N-diacetic acid, its salts and derivatives thereof, iminodisuccinic acid, its salts and derivatives thereof carboxy methyl inulin, its salts and derivatives thereof; and ii) an itaconic/sulfonic polymer; wherein the weight ratio of the carbonate to the builder system is at least 1.5:1.
    Type: Application
    Filed: June 7, 2018
    Publication date: December 20, 2018
    Inventors: Rachel Elizabeth MARTIN, Karen Margaret PRESTON, Philip Frank SOUTER
  • Publication number: 20180362888
    Abstract: A phosphate-free automatic dishwashing cleaning composition including from about 10% to about 60% by weight thereof of a builder system consisting of: i) a complexing agent selected from the group consisting of methyl glycine diacetic acid, its salts and derivatives thereof, glutamic-N,N-diacetic acid, its salts and derivatives thereof, iminodisuccinic acid, its salts and derivatives thereof, carboxy methyl inulin, its salts and derivatives thereof; and mixtures thereof; and ii) an itaconic/sulfonic polymer wherein the builder system comprises more than 40% by weight thereof of the complexing agent.
    Type: Application
    Filed: June 7, 2018
    Publication date: December 20, 2018
    Inventors: Rachel Elizabeth MARTIN, Karen Margaret Preston, Philip Frank Souter
  • Publication number: 20180362890
    Abstract: The present invention relates to a phosphate-free automatic dishwashing cleaning including having a protease and an itaconic/sulfonic polymer including monomer units derived from styrenesulfonic acid and/or monomer units derived from 2-acrylamido-2-methylpropane-sulfonic acid.
    Type: Application
    Filed: June 7, 2018
    Publication date: December 20, 2018
    Inventors: Rachel Elizabeth MARTIN, Karen Margaret PRESTON, Philip Frank SOUTER
  • Patent number: 9951304
    Abstract: Multi-compartment water-soluble pack comprising a cleaning composition and an enveloping material where the pack comprises a first compartment containing a first composition in liquid form comprising: i) a hygroscopic material; and ii) more than about 15% of water; wherein the first composition has an equilibrium relative humidity of less than about 65% at 20° C.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: April 24, 2018
    Assignee: The Procter & Gamble Company
    Inventors: Nathalie Sophie Letzelter, Nikola Curcic, Elena Alda, Karen Margaret Preston, Robby Renilde Francois Keuleers
  • Publication number: 20140179586
    Abstract: Multi-compartment water-soluble pack comprising a cleaning composition and an enveloping material where the pack comprises a first compartment containing a first composition in liquid form comprising: i) a hygroscopic material; and ii) more than about 15% of water; wherein the first composition has an equilibrium relative humidity of less than about 65% at 20° C.
    Type: Application
    Filed: December 12, 2013
    Publication date: June 26, 2014
    Applicant: The Procter & Gamble Company
    Inventors: Nathalie Sophie LETZELTER, Nikola CURCIC, Elena ALDA, Karen Margaret PRESTON, Robby Renilde Francois KEULEERS