Patents Represented by Attorney Thomas Hamilton
  • Patent number: 6639079
    Abstract: A process for the preparation of 3,5-dichloropyridine comprising reacting a trichloropyridine, a tetrachloropyridine or pentachloropyridine with zinc metal, in the presence of an acidic compound and at a temperature in the range 50-120° C.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: October 28, 2003
    Assignee: Syngenta Limited
    Inventors: Stephen Martin Brown, Martin Charles Bowden
  • Patent number: 6613542
    Abstract: In a testing system for chemical substances or substance mixtures, especially for potential plant protection compositions, the chemical substance to be tested or the substance mixture to be tested is applied to a test specimen, especially to plants or parts of plants. When a predetermined period of time has elapsed, the test specimen is examined for the activity of the substance or substance mixture. For this purpose, first of all a type of test specimen is selected from a stock of test specimens, and the substances to be tested are selected from a stock of substances to be tested. The selected type of test specimen and the selected substances are identified (BC1, BC2) by means of a machine-readable code and those codes are supplied to a memory unit (12).
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: September 2, 2003
    Assignee: Syngenta Crop Protection, Inc.
    Inventors: Jörg Mentzen, Helmut Kessmann, Harald Danigel, Gerhard Klokow, Peter Obergfell
  • Patent number: 6599861
    Abstract: Compounds of formula I wherein the substituents are defined as in claim 1, as well as the agronomically acceptable salts, isomers and enantiomers of these compounds, as well as the agronomically acceptable salts/N-oxides/isomers/enantiomers of these compounds, are eminently suitable for use as herbicides.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: July 29, 2003
    Assignee: Syngenta Participations AG
    Inventors: Jürgen Schaetzer, Alain De Mesmaeker, Shy-Fuh Lee
  • Patent number: 6586624
    Abstract: Preparation of 2,5-dichlorophenol by selectively oxidizing 1,4-dichlorobenzene using a peroxo-, hydroperoxo-, superoxo- or alkylperoxo-vanadium species in the presence of an &agr;-hydroxy-, dibasic-, tribasic- or sulfonic acid.
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: July 1, 2003
    Assignee: Syngenta Participations AG
    Inventors: Clive A. Henrick, Randall A. Scheuerman
  • Patent number: 6586367
    Abstract: Undesired plant growth in cultivations of useful plants which are resistant to phopho-herbicides, may be controlled with herbicidal compositions, which contain, in addition to the usual inert formulation assistants, a phospho-herbicide and a synergistic amount of at least one further herbicide selected from the group comprising prosulfuron, primisulfuron, dicamba, pyridate, dimethenamide and its S-enantiomer, metolachlor and its S-enantiomer, fluometuron, propaquizafop, atrazine, clodinafop, norflurazone, ametryn, terbutylazine, simazine, prometryn, NOA-402989, as well as the compounds of formulae
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: July 1, 2003
    Assignee: Syngenta Crop Protection, Inc.
    Inventors: Bruce Lee, Andreas Zoschke, Hans Peter Lutz
  • Patent number: 6573275
    Abstract: A compound of formula (I): wherein R1 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 R2 represents hydrogen or cyano or a group selected from alkyl, aryl, heteroaryl, aralkyl, heteroarylalkyl, alkenyl, aralkenyl, alkynyl, alkoxycarbonyl, alkanesulfonyl, arenesulfonyl, alkanyloxycarbonyl, aralkyloxycarbonyl, aryloxycarbonyl, heterocyclylalkyl, carbamyl or dithiocarboxyl groups, said groups comprising from 1 to 15 carbon atoms, said groups being optionally substituted with one or more substituents selecte
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: June 3, 2003
    Assignee: Syngenta Limited
    Inventors: Christopher John Urch, Roger Salmon, Terence Lewis, Christopher Richard Ayles Godfrey, Martin Stephen Clough
  • Patent number: 6555122
    Abstract: Solid water-dispersible compositions containing microencapsulated pesticides are produced by spray-drying an aqueous suspension of said pesticides in the presence of a water-soluble polymer.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: April 29, 2003
    Assignee: Syngenta Limited
    Inventors: Ray Jia Ruey Lo, Jin Ling Chen, Herbert Benson Scher, Juanita Elena Van Koppenhagen, Ian Malcolm Shirley
  • Patent number: 6541663
    Abstract: Raney copper, which is doped (promoted) with an effective quantity of a doping (promoting) agent selected from the group boric acid, onium fluorides, salts of fluorine complex anions, and heteropoly acids, represents an outstanding oxidation catalyst for amine-group-containing primary amines to carboxylic acids.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: April 1, 2003
    Assignee: Syngenta Participations AG
    Inventors: Bernd Siebenhaar, Milos Rusek
  • Patent number: 6534445
    Abstract: Compounds of formula (I), in which the substituents are as defined in claim 1 and the agrochemically tolerated salts M+ and all stereoisomers and tautomers of the compounds of formula (I) are suitable for use as herbicides.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: March 18, 2003
    Assignee: Syngenta Participations AG
    Inventors: Andrew Edmunds, Christoph Lüthy, Karl Seckinger, Alain De Mesmaeker, Walter Kunz, Jürgen Schaetzer
  • Patent number: 6521785
    Abstract: The present invention relates to surfactants useful in life science and industrial formulations. More particularly, the invention relates to surfactants of alkoxylated amine neutralized by aromatic sulfonic acid and pesticide formulations containing the same.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: February 18, 2003
    Assignee: Syngenta Participations AG
    Inventors: Tammy Tyler Shannon, Carolyn Estep Moore, Victor Shui-Chiu Chow
  • Patent number: 6511941
    Abstract: A herbicidal synergistic composition, comprising, besides customary inert formulation auxiliaries, a compound of formula I and a synergistically active amount of at least one active ingredient selected from among the compounds of formula II  in which A is a group X is —O—, —CH2— or —NH—; Y is OCH3; E is N; R1 is OC2H5, O(CH2)2OCH3
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: January 28, 2003
    Assignee: Syngenta Crop Protection, Inc.
    Inventors: Jean Louis Allard, Manfred Hudetz
  • Patent number: 6509471
    Abstract: The present invention relates to 3-substituted and 2,3-disubstituted pyridine compounds which are useful as intermediates in the synthesis of pyridylsulfonylurea herbicides. The invention also relates to arylation of alcohols using a pyridinediazonium salt. More particularly the arylation process of the instant invention relates to the synthesis of 2,3-disubstituted pyridine compounds via anhydrous diazotization of 3-aminopyridines to form a diazonium salt intermediate that is then reacted with the appropriate alcohol to produce the desired product. The invention additionally relates to pyridine-3-diazonium salt intermediates.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: January 21, 2003
    Assignee: Syngenta Participations AG
    Inventor: Dean Kent Hoglen
  • Patent number: 6498125
    Abstract: Compounds of formula (I) in which the substituents are as defined in claim 1 are suitable for use as herbicides.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: December 24, 2002
    Assignee: Syngenta Participations AG
    Inventors: Andrew Edmunds, Karl Seckinger, Christoph Lüthy, Walter Kunz, Alain De Mesmaeker, Jürgen Schaetzer
  • Patent number: 6498265
    Abstract: Compounds of the formula I and disulfides thereof and salts thereof are important intermediate products for the preparation of compounds having a microbicidal and plant-immunizing action, of the formula III In the compounds of the formulae I and III: X is halogen, n is 0,1,2 or 3; Z is CN, CO—A or CS—A, A is hydrogen, halogen, OR1, SR2 and N(R3)R4; R1 to R4 are hydrogen, a substituted or unsubstituted, open-chain, saturated or unsaturated hydrocarbon radical containing not more than 8 carbon atoms, a substituted or unsubstituted cyclic, saturated or unsaturated hydrocarbon radical containing not more than 10 carbon atoms, substituted or unsubstituted benzyl or phenethyl, a substituted or unsubstituted alkanoyl group containing not more than 8 carbon atoms, a substituted or unsubstituted benzoyl group or a substituted or unsubstituted heterocyclyl radical; or R3 and R4, together with the nitrogen atom to which they are bonded, are a 5- or 6-membered, substit
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: December 24, 2002
    Assignee: Syngenta Investment Corporation
    Inventors: Walter Kunz, Beat Jau
  • Patent number: 6495595
    Abstract: The present invention relates to a surfactant for general use in agricultural compositions, including, but not limited to herbicidal, fungicidal and insecticidal formulations comprised of two components: an alkoxylated tristyrylphenol acid neutralized to the desired pH or properties with an appropriate amount of alkoxylated alkyl amine.
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: December 17, 2002
    Assignee: Syngenta Participations AG
    Inventors: Carolyn Estep Moore, Victor Shui-Chiu Chow, Michael James Hopkinson, Tammy Tyler Shannon
  • Patent number: 6489267
    Abstract: A selective herbicidal composition for controlling grasses and weeds in crops of cultivated plants, comprising a) a herbicidally effective amount of a compound of formula I  wherein Q is the group R1 is hydrogen, —COO—C1-C4-alkyl, —S—C1-C4-alkyl or —SO—C1-C4-alkyl; and b) to antagonise the herbicide, an antidotally effective amount of a safener of formula II  or the ethyl esters thereof.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: December 3, 2002
    Assignee: Syngenta Crop Protection, Inc.
    Inventor: Willy T. Rüegg
  • Patent number: 6484879
    Abstract: The present invention relates to a bag packaging system composed of a bag sealable to contain a liquid, in which the bag is composed of a continuous outer water soluble film and an inner continuous protective film layer that allows storage therein of a liquid that would chemically or physically react with the water soluble film but is prevented from doing so by the presence of the continuous protective film layer on the inner portion of the bag.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: November 26, 2002
    Assignees: Syngenta Crop Protection, Inc., MonoSol, LLC
    Inventors: Armand J. Desmarais, Henry E. Knoop, Lawrence C. Dull, Jean A. Raymond
  • Patent number: 6469005
    Abstract: Propargylether derivatives of formula I including the optical isomers thereof and mixtures of such isomers, wherein R1 is hydrogen, alkyl, cycloalkyl or optionally substituted aryl, R2 and R3 are each independently hydrogen or alkyl, R4 is alkyl, alkenyl or alkynyl, R5, R6, R7, and R8 are each independently hydrogen or alkyl and R9 is a group R10 is optionally substituted aryl or optionally substituted heteroaryl, R11 is hydrogen or optionally substituted alkyl, alkenyl or alkynyl, Z is hydrogen —CO—R16, —COOR16, —CO—COOR16 or —CONR16R17, R12 is hydrogen, or optionally substituted alkyl, alkenyl or alkynyl, R13 is hydrogen or alkyl, R14 is hydrogen, alkyl, cycloalkyl or cycloalkyl-alkyl, R15 is alkyl, alkenyl, alkynyl, optionally substituted aryl or optionally substituted aryl-alkyl, and R16 and R17 are independently of each other hydrogen, optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: October 22, 2002
    Assignee: Syngenta Participations AG
    Inventors: Martin Zeller, André Jeanguenat, Clemens Lamberth, Walter Kunz
  • Patent number: 6441169
    Abstract: Novel pyrimidin-4-one and pyrimidin-4-thione derivatives of formula (I) wherein A is phenyl, thienyl (including all 3 isomers), thiazolyl or pyridyl; X is oxygen or sulfur; R1 is hydrogen, halogen or trimethylsilyl; R2 is hydrogen, halogen or trimethysilyl; and at least one of R1 and R2 is not hydrogen; R3 is C1-C6alkyl, C1-C6haloalkyl, C2-C6alkenyl, C2-C6haloalkenyl, C2-C6alkynyl, C2-C6haloalkynyl, —(CH2)n—C3-C8cycloalkyl which are unsubstitituted or substituted by halogen, C1-C6alkyl or C1-C6haloalkyl, C1-C4alkoxy-C1-C6alkyl; C1-C4alkoxy-C2-C6alkenyl; C1-C4alkoxy-C2-C6alkenyl; C1-C4alkythio-C1-C6alkyl; C1-C4alkylthio-C2-C6alkenyl; C1-C4alkythio-C2-C6alkynyl; mono-C1-C4alkylamin-C1-C6alkyl; mono-C1-C4alkylamin-C1-C6alkenyl; mono-C1-C4alkylamin-C2-C6alkynyl; —(CH2)n—C1-C4alkoxy-C3-C6cycloalkyl; —(CH2)n—C1-C4alkylthio-C3-C6cycloalkyl; —(CH2)2-mono-C1-C4alkylamin-C3-C6cycloalkyl; or N═CR9R10; n is 1, 2, 3, or 4; R4, R5, R6, R7, and R8 are each independently of the
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: August 27, 2002
    Assignee: Syngenta Crop Protection, Inc.
    Inventor: Harald Walter
  • Patent number: 6432965
    Abstract: The invention relates to novel fungicidal compositions having a synergistically increased action, wherein component a) is a thieno[2,3-d]pyrimidin-4-one of formula I wherein R1 is halogen, R2 is C1-C5alkyl, —CH2-cyclopropyl and R3 is C1-C5alkyl, —CH2-cyclopropyl; in association with b) either an anilinopyrimidine fungicide (II), or an azole fungicide (III), or a morpholine fungicide (IV), or a strobilurin compound (V), or a pyrrole compound (VI), or a phenylamide (VII), or a dithiocarbamate fungicide selected from mancozeb, maneb, metiram and zineb, or a copper compound selected from copper hydroxide, coopper oxychloride, copper sulfate and oxine-copper, or a phthalimide compound (VIII), or prochloraz, or triflumizole, or pyrifenox, or acibenzolar-S-methyl, or chlorothalonil, or cymoxanil, or dimethomorph, or famoxadone, or fenhexamide, or fenarimol, or fluazinam, or fosetyl-aluminium, orquinoxyfen, or fenpropidine, or spiroxamine, or carbendazime, or thlabendazole, or
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: August 13, 2002
    Assignee: Syngenta Crop Protection, Inc.
    Inventors: Kaspar Müller, Gertrude Knauf-Beiter, Dietrich Hermann, Harald Walter