Patents Represented by Attorney, Agent or Law Firm Dianne Burkhard
  • Patent number: 5928998
    Abstract: Substituted arylindazoles of the formula: ##STR1## wherein X is CR.sup.14 and R.sup.14 is hydrogen, halogen, haloalkyl, cyano, nitro, alkylthio, alkylsulfonyl, alkylsulfinyl or alkoxy; and substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are as defined in the specification. Use of the compounds as herbicides and methods of making the compounds are also described.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: July 27, 1999
    Assignee: Zeneca Limited
    Inventors: Donald R. James, Don R. Baker, Steven D. Mielich, William J. Michaely, Steven Fitzjohn, Christopher G. Knudsen, Christopher Mathews, John M. Gerdes
  • Patent number: 5928994
    Abstract: Control of weeds in a rice crop is obtained by applying to the crop, the weeds, or the locus of either, a herbicidal composition containing molinate and oxyfluorfen in a weight ratio of from about 500:1 to about 30:1.
    Type: Grant
    Filed: September 2, 1998
    Date of Patent: July 27, 1999
    Assignee: Zeneca Limited
    Inventors: Richard L. Franz, Jee Mok Fua, Khosro Khodayari
  • Patent number: 5922732
    Abstract: A compound of formula (I): ##STR1## wherein R.sup.1 represents a group of formula (A) where each of W, X, Y and Z and Z represents either a group CR or the nitrogen atom, provided that not more than two of W, X, Y and Z represent the nitrogen atom and where each R present is independently selected from hydrogen and halogen atoms and cyano, amino, hydrazino, acylamino, hydroxy, alkyl, hydroxyalkyl, alkoxy, haloalkyl, haloalkoxy, alkenyl, alkenyloxy, alkoxyalkenyl, alkynyl, carboxylic acyl, alkoxycarbonyl, aryl and heterocyclyl groups, said groups comprising up to 6 carbon atoms, and wherein R.sup.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: July 13, 1999
    Assignee: Zeneca Limited
    Inventors: Christopher John Urch, Roger Salmon, Terence Lewis, Christopher Richard Ayles Godfrey, Martin Stephen Clough
  • Patent number: 5914423
    Abstract: A process for the preparation of a compound of formula (I):HetSCH.sub.2 CH.sub.2 CH.dbd.CF.sub.2 (I)wherein Het is an optionally substituted 5- or 6-membered heterocyclic ring, which comprises reacting a compound of formula (II):HetSH (II)with a compound of formula (III):CF.sub.2 .dbd.CHCH.sub.2 CH.sub.2 L (III)wherein L is chlorine or bromine or a group --OSO2R.sup.a wherein R.sup.a is a C1-4 alkyl group or a phenyl group optionally substituted by a C1-4 alkyl group.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: June 22, 1999
    Assignee: Zeneca, Limited
    Inventors: Michael Drysdale Turnbull, Nigel James Willetts, Steven Fitzjohn, Prafula Govind Kholia, Harjindersingh Bansal, Alfred Glyn Williams
  • Patent number: 5912243
    Abstract: A compound having the formula R--S(O).sub.n CH.sub.2 CH.sub.2 CH.dbd.CF.sub.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: June 15, 1999
    Assignee: Zeneca Limited
    Inventors: Alan John Dowling, Alison Mary Craig, Christopher Richard Ayles Godfrey, Harjinder Singh Bansal, Matthew Brian Hotson, Michael Drysdale Turnbull, Nan Catherine Sillars, Roger Salmon, Steven Fitzjohn
  • Patent number: 5910604
    Abstract: A process for the purification of a compound of general formula I: ##STR1## wherein R.sup.1 is hydrogen or C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl or C.sub.2 -C.sub.6 alkynyl, any of which may optionally be substituted with one or more substituents selected from halogen and hydroxy; or COOR.sup.4, COR.sup.6, CONR.sup.4 R.sup.5 or CONHSO.sub.2 R.sup.4 ;R.sup.4 and R.sup.5 independently represent hydrogen or C.sub.1 -C.sub.4 alkyl optionally substituted with one or more halogen atoms;R.sup.6 is a halogen atom or a group R.sup.4 ;R.sup.2 is hydrogen or halo; andR.sup.3 is C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkenyl or C.sub.2 -C.sub.
    Type: Grant
    Filed: March 13, 1997
    Date of Patent: June 8, 1999
    Assignee: Zeneca Limited
    Inventors: Stephen Martin Brown, Brian David Gott, Thomas Gray, Seyed Mehdi Tavana
  • Patent number: 5874650
    Abstract: A process for the preparation of 4,4,4-trichlorobutan-1-ol which comprises reacting allyl alcohol with chloroform in the presence of a radical initiator. Preferably the allyl alcohol is added incrementally to the chloroform over the period of the reaction.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: February 23, 1999
    Assignee: Zeneca Limited
    Inventor: Martin Charles Bowden
  • Patent number: 5859024
    Abstract: The invention provides novel compounds of formula (I) and formula (II) ##STR1## wherein R.sup.1 represents a group of formula (A) ##STR2## where each of W, X, Y and Z and represents either a group CR or the nitrogen atom, provided that not more than two of W, X, Y and Z represent the nitrogen atom and where each R present is independently selected from hydrogen and halogen atoms and cyano, amino, hydrazino, acylamino, hydroxy, alkyl, hydroxyalkyl, alkoxy, haloalkyl, haloalkoxy, alkenyl, alkenyloxy, alkoxyalkenyl, alkynyl, carboxylic acyl, alkoxycarbonyl, aryl and heterocyclyl groups, said groups comprising up to 6 carbon atoms, and wherein R.sup.2 represents a group XR.sup.3 where X represents oxygen or a group NR.sup.4 where R.sup.3 and R.sup.
    Type: Grant
    Filed: May 31, 1997
    Date of Patent: January 12, 1999
    Assignee: Zeneca Limited
    Inventors: Matthew Brian Hotson, Roger Salmon
  • Patent number: D411750
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: June 29, 1999
    Assignee: Zeneca Limited
    Inventors: Christopher James Forecast, David Kevin Thomson, Stephen Christopher Moore