Patents by Inventor Derek Ian Wallis

Derek Ian Wallis 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).

  • 4-benzoyl isoxazoles and their use as herbicides
    Patent number: 5856274
    Abstract: The invention relates to 4-benzoylisoxazoles having the formula: ##STR1## wherein: R is hydrogen or --CO.sub.2 R.sup.5 ;R.sup.1 is alkyl, cyclopropyl or 1-methylcyclopropyl;R.sup.2 is chlorine, bromine, optionally substituted alkyl, alkoxy, haloalkoxy, --S(O).sub.p R.sup.61, nitro or cyano;R.sup.3 is --S(O).sub.n R.sup.6 ;R.sup.4 is hydrogen, fluorine, chlorine, bromine, optionally substituted alkyl, alkoxy, S(O).sub.q R.sup.61, nitro, cyano or --CO.sub.2 R.sup.52 ;R.sup.5 and R.sup.61, which are the same or different, are each alkyl or haloalkyl;R.sup.52 is alkyl;R.sup.6 is alkyl, alkenyl or alkynyl optionally substituted by one or more halogen; andn, p and q, which are the same or different, are each zero, one or two;and their use as herbicides.
    Type: Grant
    Filed: September 14, 1995
    Date of Patent: January 5, 1999
    Assignee: Rhone-Poulenc Agriculture Limited
    Inventors: Susan Mary Cramp, Claude Lambert, Derek Ian Wallis, Thomas Yarwood
  • Herbicidal 2-cyano-1,3-diones
    Patent number: 5804532
    Abstract: Herbicides derived from 2-cyano-1,3-diones have the formula: ##STR1## wherein R, R.sup.1, R.sup.2 R.sup.3, R.sup.4 and R.sup.5 are as defined in the description. The compounds are intended for use pre- and post-emergence as selective herbicides in maize and a large number of other monocotyledon crops.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: September 8, 1998
    Assignee: Rhone-Poulenc Agriculture Limited
    Inventors: Paul Alfred Cain, Susan Mary Cramp, Claude Lambert, Derek Ian Wallis, Thomas David Yarwood, Gillian Mary Little, John Morris, Tibor Musil, Simon Neil Pettit, Philip Henry Gaunt Smith
  • Herbicidal 4-substituted isoxazol
    Patent number: 5747424
    Abstract: The invention relates to 4-substituted isoxazole derivatives of formula I: ##STR1## wherein R, R.sup.1, R.sup.2, Q and n have the meanings defined in the description, which possess valuable herbicidal properties.
    Type: Grant
    Filed: May 1, 1997
    Date of Patent: May 5, 1998
    Assignee: Rhone-Poulenc Agriculture Ltd.
    Inventors: David Alan Roberts, Susan Mary Cramp, Derek Ian Wallis, Jean-Paul Bulot
  • Herbicidal 4-substituted isoxazoles
    Patent number: 5656573
    Abstract: The invention relates to 4-substituted isoxazole derivatives of formula I: ##STR1## wherein R, R.sup.1, R.sup.2, Q and n have the meanings defined in the description, which possess valuable herbicidal properties.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: August 12, 1997
    Assignee: Rhone-Poulenc Agriculture Ltd.
    Inventors: David Alan Roberts, Susan Mary Cramp, Paul Alfred Cain, Derek Ian Wallis, Jean-Paul Bulot, Gillian Mary Little, Brian Malcolm Luscombe
  • Intermediates to herbicidal 4-substituted isoxazoles
    Patent number: 5650533
    Abstract: The invention relates to 4-substituted isoxazole derivatives of formula I: ##STR1## wherein R, R.sup.1, R.sup.2, Q and n have the meaning defined in the description which possess valuable herbicidal properties.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: July 22, 1997
    Assignee: Rhone-Poulenc Agriculture Ltd.
    Inventors: David Alan Roberts, Susan Mary Cramp, Derek Ian Wallis, Jean-Paul Bulot