Patents by Inventor Petra Zuidgeest

Petra Zuidgeest 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).

  • Detergent compositions
    Patent number: 5583098
    Abstract: A particulate detergent composition having a bulk density of at least 650 g/l which is not the product of a spray-drying process consists of a substantially homogeneous granular base and optional postdosed ingredients. The composition comprises a surfactant system, alkali metal aluminosilicate builder, and a water-soluble salt of citric acid, preferably sodium citrate, and optionally other ingredients. The delivery and dissolution characteristics of the composition in the wash are improved if citrate of Rosin Rammler particle size less than 800 .mu.m is incorporated within the granular base. The composition may also contain postdosed citrate of unrestricted particle size.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: December 10, 1996
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Jelles V. Boskamp, Mark P. Houghton, Christophe Joyeux, Carolyn A. Rowe, Cornelis E. J. van Lare, Gilbert M. Verschelling, Petra Zuidgeest