Patents by Inventor Roger John Parker

Roger John Parker 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).

  • Herbicidal compositions having improved stability
    Patent number: 4075002
    Abstract: Herbicidal compositions are provided which contain a solid herbicide dispersed in an aqueous solution of a herbicidal bipyridylium salt along with a cationic dispersing agent for added stability of the formulation.
    Type: Grant
    Filed: January 15, 1973
    Date of Patent: February 21, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventors: Nigel Wyndham Drewe, Roger John Parker, Tharwat Fouad Tadros