Patents by Inventor Alan B. Marshall

Alan B. Marshall 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).

  • Dispenser for the application of active components
    Patent number: 4862832
    Abstract: A dispenser for the application of insecticides or acaricides to the surface of animals for controlling insects and acarids on the coat of the animals and for preventing infestation by pests, distinguished by optical indication of the exhaustion of the active component.
    Type: Grant
    Filed: February 19, 1988
    Date of Patent: September 5, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Helmut Metzner, Alan B. Marshall