Patents by Inventor Susan Marie Critchley

Susan Marie Critchley 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).

  • Granule composition
    Patent number: 6087306
    Abstract: A granule suitable for aqueous spray application after tank mix dispersion or dissolution comprises an active ingredient or auxiliary agent, an inert filler and a water-swellable material wherein the water-swellable material is incorporated into the granule in a substantially dry form. Preferred water-swellable materials are non-ionic or predominantly non-ionic and an especially preferred water-swellable material is Xantham gum. The granules provide reduced sludge residues in the spray tank and are particularly well suited for use when housed in a water-soluble bag.
    Type: Grant
    Filed: April 22, 1998
    Date of Patent: July 11, 2000
    Assignee: Zeneca Limited
    Inventors: Gordon Alastair Bell, Susan Marie Critchley