Patents by Inventor John William Harold Yorke

John William Harold Yorke 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).

  • Anti-form system based on hydrocarbon polymers and hydrophobic particulate solids
    Patent number: 5695575
    Abstract: A method and composition for inhibiting foam formation in automatic dishwashers are described. The composition comprises an anti-foam system having 0.01 to 1% of certain hydrophobic particulate solids combined with 0.01 to 4% of high viscosity hydrocarbon polymers; 1 to 30 wt. % of a bleaching agent; 1 to 40 wt. % of a surfactant; 0.1 to 10 wt. % of an enzyme; and 1 to 75 wt. % of a builder, the composition having a pH of less than about 11.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: December 9, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Petrus Adrianus Angevaare, Olaf Beers, Peter Robert Garrett, Alla Tartakovsky, John William Harold Yorke