Patents by Inventor Donna Macnab

Donna Macnab 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: 9150993
    Abstract: The invention provides a method of laundering fabric which uses a pourable liquid detergent composition comprising 10-40% wt of surfactant, essentially consisting of nonionic and/or anionic surfactant (typically less than 90% wt LAS and at least 10% wt of nonionic surfactant) in which 10-40% wt of surfactant preferably passes the Calcium Tolerance Test described in the patent. The composition comprises no more than 15% wt of soap, (present as a minority in wt % terms of the total surfactant). In the method, the composition is diluted by a factor of greater than 500 to obtain a wash liquor which comprises 0.8-0.05 g/l of surfactant, and, the wash liquor is contacted with fabrics.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: October 6, 2015
    Assignee: Conopco, Inc.
    Inventors: Julie Bennett, Paul Kravchuk, Donna MacNab, Anthony McKee, Alyn James Parry, Patricia Revell, Becky Zhou
  • Publication number: 20130291315
    Abstract: The invention provides a method of laundering fabric which uses a pourable liquid detergent composition comprising 10-40% wt of surfactant, essentially consisting of nonionic and/or anionic surfactant (typically less than 90% wt LAS and at least 10% wt of nonionic surfactant) in which 10-40% wt of surfactant preferably passes the Calcium Tolerance Test described in the patent. The composition comprises no more than 15% wt of soap, (present as a minority in wt % terms of the total surfactant). In the method, the composition is diluted by a factor of greater than 500 to obtain a wash liquor which comprises 0.8-0.05 g/l of surfactant, and, the wash liquor is contacted with fabrics.
    Type: Application
    Filed: July 2, 2013
    Publication date: November 7, 2013
    Inventors: Julie BENNETT, Paul KRAVCHUK, Donna MACNAB, Anthony MCKEE, Alyn James PARRY, Patricia REVELL, Becky ZHOU
  • Publication number: 20110119841
    Abstract: The invention provides a method of laundering fabric which uses a pourable liquid detergent composition comprising 10-40% wt of surfactant, essentially consisting of nonionic and/or anionic surfactant (typically less than 90% wt LAS and at least 10% wt of nonionic surfactant) in which 10-40% wt of surfactant preferably passes the Calcium Tolerance Test described in the patent. The composition comprises no more than 15% wt of soap, (present as a minority in wt % terms of the total surfactant). In the method, the composition is diluted by a factor of greater than 500 to obtain a wash liquor which comprises 0.8-0.05 g/l of surfactant, and, the wash liquor is contacted with fabrics.
    Type: Application
    Filed: June 8, 2009
    Publication date: May 26, 2011
    Inventors: Julie Bennett, Paul Kravchuk, Donna Macnab, Anthony McKee, Alyn James Parry, Patricia Revell, Becky Zhou
  • Publication number: 20090093392
    Abstract: Use of a detergent composition comprising an amine oxide surfactant, at least one branched nonionic surfactant and at least one anionic component for enhancing particulate soil removal from a fabric washed in a wash liquor containing the detergent composition.
    Type: Application
    Filed: April 20, 2006
    Publication date: April 9, 2009
    Applicant: CONOPCO, INC. D/B/A/ UNILEVER
    Inventors: David Alan Binder, Petrus Wilhelmus N de Groot, Donna MacNab, Albert van der Wal
  • Patent number: 7160947
    Abstract: Graft copolymers providing soil release benefits in laundry detergent compositions contain backbone units derived from an ethylenically unsaturated monomer, hydrophilic uncharged side chains, and cationically chargeable or charged side chains containing a tertiary or quaternary nitrogen atom. Preferred copolymers have a methacrylate backbone with polyethylene oxide and 2-dimethylaminoethyl methacrylate (DMAEMA) side chains. The graft copolymers may be prepared by radical polymerisation.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: January 9, 2007
    Assignee: Unilever Home & Personal Care USA division of Conopco, Inc.
    Inventors: Per Martin Claesson, Petrus Wilhelmus Nicolaas de Groot, Donna MacNab, Albert van der Wal, Becky Zhou
  • Patent number: 7160848
    Abstract: Hydrophobically modified vinyl pyrrolidone polymers which are copolymers having a vinyl pyrrolidone backbone and pendant hydrophobic side chains are useful in laundry detergent compositions to improve detergency and/or antiredeposition. The pendant hydrophobic side chains preferably comprise alkyl chains containing from 4 to 20 carbon atoms and may be linked to the backbone via an ester linkage.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: January 9, 2007
    Assignee: Unilever Home & Personal Care USA division of Conopco, Inc.
    Inventors: Donna Macnab, Catherine Marie-Joseph Soret, Robert Kemeys Thomas, Albert van der Wal
  • Publication number: 20040127391
    Abstract: Graft copolymers providing soil release benefits in laundry detergent compositions contain backbone units derived from an ethylenically unsaturated monomer, hydrophilic uncharged side chains, and cationically chargeable or charged side chains containing a tertiary or quaternary nitrogen atom.
    Type: Application
    Filed: December 11, 2003
    Publication date: July 1, 2004
    Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.
    Inventors: Per Martin Claesson, Petrus Wilhelmus Nicolaas de Groot, Donna MacNab, Albert van der Wal, Becky Zhou
  • Publication number: 20040127390
    Abstract: Hydrophobically modified vinyl pyrrolidone polymers which are copolymers having a vinyl pyrrolidone backbone and pendant hydrophobic side chains are useful in laundry detergent compositions to improve detergency and/or antiredeposition. The pendant hydrophobic side chains preferably comprise alkyl chains containing from 4 to 20 carbon atoms and may be linked to the backbone via an ester linkage.
    Type: Application
    Filed: December 11, 2003
    Publication date: July 1, 2004
    Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.
    Inventors: Donna Macnab, Catherine Marie-Joseph Soret, Robert Kemeys Thomas, Albert van der Wal