Patents by Inventor Philip L. Urlwin-Smith

Philip L. Urlwin-Smith 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 heterocyclic compounds
    Patent number: 4133674
    Abstract: Herbicidal compounds of formula: ##STR1## and their salts, wherein R.sup.1 and R.sup.2 are specified alkyl groups, potentially useful as selective herbicides for cereals.
    Type: Grant
    Filed: May 3, 1977
    Date of Patent: January 9, 1979
    Assignee: Imperial Chemical Industries Limited
    Inventors: David Cartwright, Philip L. Urlwin-Smith