Patents by Inventor Francis S. Downing

Francis S. Downing 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).

  • Certain tickicidal pyrethroid mixtures and stabilizer therefor
    Patent number: 4171355
    Abstract: A process for killing ticks using a composition comprising a pyrethroid of the cyclopropane carboxylate type, a hetero N-substituted phosphorus compound and a hydroxy-substituted benzophenone.
    Type: Grant
    Filed: October 4, 1977
    Date of Patent: October 16, 1979
    Assignee: ICI Australia Limited
    Inventors: Vincent K. Stubbs, Francis S. Downing, Gordon J. Marrs