Patents by Inventor Petrus Wilhelmus Nicolaas de Groot

Petrus Wilhelmus Nicolaas de Groot 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).

  • Polymers and laundry detergent compositions containing them
    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
  • Polymers and laundry detergent compositions containing them
    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