Patents by Inventor David E. Saunders

David E. Saunders 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).

  • Sulfonamide herbicides
    Patent number: 5559081
    Abstract: Herbicidal sulfonamides of the formula: ##STR1## and salts thereof, where: A represents a substituted or unsubstituted benzene ring, or a 5- or 6-membered substituted or unsubstituted heteroaromatic ring; Q is --O--, --S-- or a group --CXX'--; X and X', which may be the same or different, are each hydrogen, halogen, cyano, an optionally-substituted alkyl group, or a group --OR.sup.a, --SR.sup.a, or --COR.sup.b ; or one of X and X' represents hydroxy and the other is as defined above; or X and X' together represent .dbd.O or .dbd.S; R.sup.a is an optionally-substituted alkyl, aryl or acyl group; R.sup.b is an optionally-substituted alkyl or aryl group, or a group --OR.sup.c or --NR.sup.c R.sup.d ; R.sup.c and R.sup.d, which may be the same or different, are each hydrogen, or an optionally-substituted alkyl or aryl group; Y is nitrogen or a group CR.sup.9 ; R.sup.1 is an optionally-substituted alkyl, alkenyl, alkynyl, cycloalkyl, aryl, heterocyclyl, benzoheterocyclyl or amino group; R.sup.
    Type: Grant
    Filed: May 6, 1994
    Date of Patent: September 24, 1996
    Assignee: Agrevo UK Limited
    Inventors: Peter S. Gates, Graham P. Jones, David E. Saunders