Patents by Inventor Alistair John Pretty

Alistair John Pretty 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).

  • Bleach compositions comprising manganese-containing bleach catalysts
    Patent number: 5686014
    Abstract: Bleaching compositions useful for laundering fabrics comprising a manganese bleach catalyst at a level below about 40 ppm manganese sourced by the catalyst. Also, acid wash methods useful for reducing the bleach catalyst carry-over from laundry bleach compositions containing metal-containing bleach catalysts, said methods comprising contacting fabrics impregnated with metal-containing bleach catalysts with an aqueous acidic solution having a pH below about 4.0.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: November 11, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Gerard Marcel Abel Baillely, Richard Timothy Hartshorn, Thomas Edward Cook, Alistair John Pretty, Christian Leo Marie Vermote