Patents by Inventor Brian D. Steer

Brian D. Steer 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).

  • Solid pesticidal formulation, a process for its preparation and the use thereof
    Patent number: 5324745
    Abstract: A pesticidal organotin formulation is a water dispersible solid concentrate comprising at least one pesticidal organotin compound and polyvinylpyrrolidone. The formulation is prepared by dissolving the organotin compound and the polyvinylpyrrolidione in a solvent, followed by removal of the solvent, preferably by evaporation at a pressure below atmospheric pressure to yield the solid concentrate. The formulation may be dispersed in water, either with or without agitation, to yield an aqueous dispersion which may be applied to a locus to combat pests, especially acarids.
    Type: Grant
    Filed: August 6, 1990
    Date of Patent: June 28, 1994
    Assignee: Shell Research Limited
    Inventors: Michael G. Sayer, Alister C. Hill, Teresa J. Reid, Brian D. Steer