Patents by Inventor René Zurflüh
René Zurflüh 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).
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Publication number: 20100048546Abstract: The present invention relates to a method of combating phytopathogenic disease on crop plants by applying to the crop plants and/or the locus thereof an effective amount of a combination of a) 2-[?-{[(?-methyl-3-trifluoromethyl-benzyl)imino]-oxy}-o-tolyl]-glyoxalic acid methyl ester-O methyloxime (I) and b) one or more other plant fungicides. These combinations exhibit synergistic fungicidal activity and are particularly effective in combating and/or preventing diseases of crop plants.Type: ApplicationFiled: August 19, 2009Publication date: February 25, 2010Inventors: Renè Zurflüh, Neil Leadbitter
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Publication number: 20090306061Abstract: A method of combating phytopathogenic diseases on crop plants which comprises applying to the crop plants or the locus thereof being infested with said phytopathogenic disease an effective amount of a combination of a) 2-[?-{[(?-methyl-3-trifluoromethyl-benzyl)imino]-oxy}-o-tolyl]-glyoxalic acid methyl ester-O methyloxime (I) in association with b) a broad variety of other plant fungicides is particularly effective in combating or preventing diseases of crop plants. These combinations exhibit synergistic fungicidal activity.Type: ApplicationFiled: August 19, 2009Publication date: December 10, 2009Inventors: René Zurflüh, Neil Leadbitter
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Patent number: 6664422Abstract: The present invention relates to a novel improved process and intermediates for the process of preparing the oxime intermediates of formula (II) wherein R1 is hydrogen, fluoro or chloro, and R2 is methyl, ethyl, methoxy, ethoxy, trifluoromethyl, trifluoromethoxy, cyano, fluoro, chloro or bromo. The novel process comprises diazotizing an aniline of formula (VI) reacting the resulting diazonium salt with isopropenylacetate of formula (X) and reacting the resulting ketone of formula (XI) with an organic nitrite in the presence of hydrogene chloride, and methylating the resulting ketooxime of formula (VIII) with a methylating agent and reacting the resulting O-methyl ketooxime of formula (IX) with hydroxylamine. The compounds of formula (II) are intermediates for highly active fungicides from the class of the strobilurins.Type: GrantFiled: August 13, 2001Date of Patent: December 16, 2003Assignee: Bayer AktiengesellschaftInventors: Rudolf Waditschatka, René Zurflüh, Edward Kelsall, Hugo Ziegler, Linhua Wang
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Patent number: 6646151Abstract: The invention relates to a process for the preparation of compounds of the formula or, if appropriate, a tautomer thereof, in each case in the free form or in salt form, in which A, X, Y, Z, R2, R3, R4, R5, R7, R9 and n are as defined in claim 1 and the C═N double bond marked with E has the E configuration, which comprises a1) reacting either a compound of the formula (II) mentioned above with a compound of the formula (III) mentioned above, in which X1 is a leaving group, or a2) a compound of the formula (IV) mentioned above, if appropriate in the presence of a base, with a compound of the formula (V) mentioned above, or b1) reacting a compound of the formula (VI) mentioned above with a compound of the formula R7—A—X2 (VII), in which X2 is a leaving group, and either further reacting the compound thus obtainable, of the formula (IV), for example according to method a2), or b2) reacting it with hydroxylamine or a salt thereof, if appropriate in the presence of a basic orType: GrantFiled: September 26, 2000Date of Patent: November 11, 2003Assignee: Bayer AktiengesellschaftInventors: Saleem Farooq, Stephan Trah, Hugo Ziegler, René Zurflüh
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Patent number: 6451855Abstract: The present invention provides a method of combating phytopathogenic disease on a crop plant which comprises applying to the crop plant and/or its locus an effective amount of a combination of 2-[&agr;-{[(&agr;-methyl-3-trifluoromethyl-benzyl)imino]-oxy}-o-tolyl]-glyoxalic acid methyl ester-O methyloxime (I) and at least one compound selected from a broad variety of other plant fungicides. The combinations exhibit synergistic fungicidal activity and are particularly effective in combating or preventing diseases of crop plants.Type: GrantFiled: January 28, 2002Date of Patent: September 17, 2002Assignee: Bayer AKtiengesellschaftInventors: René Zurflüh, Neil Leadbitter
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Patent number: 6420423Abstract: Compounds of the formula: in which n, q, A, X, G, Y, Z, R, R2, R3, R4, R5, R7 and R9 are as defined in claim 1, and, where appropriate, E/Z isomers, E/Z isomer mixtures and/or tautomers thereof, in each case in the free form or in an agrochemically suitable salt form, can be used as agrochemical active compounds and can be prepared in a manner known per se.Type: GrantFiled: June 29, 1999Date of Patent: July 16, 2002Assignee: Bayer AktiengesellschaftInventors: Saleem Farooq, Stephan Trah, Hugo Ziegler, René Zurflüh, Alfons Pascual, Henry Szczepanski, Roger Graham Hall
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Patent number: 6395761Abstract: A method of combating phytopathogenic diseases on crop plants which comprises applying to the crop plants or the locus thereof being infested with said phytopathogenic disease an effective amount of a combination of a) 2-[&agr;-{[(&agr;-methyl-3-trifluoromethyl-benzyl)imino]-oxy}-o-tolyl]-glyoxalic acid methyl ester-O methyloxime (I) in association with b) a broad variety of other plant fungicides is particularly effective in combating or preventing diseases of crop plants. These combinations exhibit synergistic fungicidal activity.Type: GrantFiled: December 2, 2000Date of Patent: May 28, 2002Assignee: Bayer AktiengesellschaftInventors: René Zurflüh, Neil Leadbitter
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Patent number: 6372787Abstract: Compounds of formula I wherein A is a group OCHR4 or N═CR4; Y is O or NH, R1 is C1-C6-alkyl; R2 is C1-C6-alkyl or C1-C6-alkyl substituted by 1 to 5 fluorine atoms; R3 is C1-C6-alkyl, C1-C6-alkoxy, C3-C6-cycloalkyl, C3-C6-cycloalkoxy, C2-C6-alkenyl, C2-C6-alkenyloxy, C2-C6-alkinyl, C2-C6-alkinyloxy, C1-C6-alkoxycarbonyl, CN or halogen, aryl, hetaryl, heterocyclyl, aryloxy, hetaryloxy or heterocyclyloxy, whereby the above-mentioned groups, with the exception of CN and halogen, may be substituted by the same or different substituents; R4 is methyl, ethyl or cyclopropyl; R6 is hydrogen or methyl; have microbicidal, insecticidal and acaricidal activity, and may be used to control plant-pathogenic fungi, acarids and insects in agriculture and in the field of hygiene.Type: GrantFiled: September 27, 2000Date of Patent: April 16, 2002Assignee: Bayer AktiengesellschaftInventors: Hugo Ziegler, René Zurflüh
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Patent number: 6342633Abstract: Compounds of the formula I in which Y is hydrogen, C1-C4alkyl, C1-C4alkoxy, OH, CN, NO2, Si(CH3)3, CF3 or halogen, Z is a group a) R1 is hydrogen, C1-C4alkyl, C2-C4alkenyl, C2-C4alkynyl, C3-C6cycloalkyl, phenyl which is unsubstituted or at most trisubstituted by halogen, C1-C4alkyl, C1-C4alkoxy, C1-C4alkylthio, or benzyl which is unsubstituted or at most trisubstituted in the aromatic ring in the same manner, or is cyclopropylmethyl, C1-C4haloalkyl, C2-C5alkoxyalkyl, cyanomethyl, CO—R6, OH, NH2, C1-C4alkylamine or C1-C4alkoxycarbonyl-C1-C2alkyl; X is oxygen, sulfur or NR5; R2 is hydrogen, C1-C4alkyl, C2-C4alkenyl, C2-C4alkynyl, C3-C6cycloalkyl, C(O)R6, OH or C1-C4alkoxy, NH2 or C1-C4alkylamine; R5 is hydrogen, C1-C4alkyl, C2-C4alkenyl or C2-C4alkynyl; R6 is hydrogen, C114 C4alkyl, C1-C4haloalkyl, C1-C4alkoxy, C3-C6cycloalkyl, C1-C4alkoxycarbonyl or phenyl which is unsubstituted or at most trisubstituted; and in which R3 and R4 independently of one another are hyType: GrantFiled: September 27, 2000Date of Patent: January 29, 2002Assignee: Bayer AktiengesellschaftInventor: René Zurflüh
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Patent number: 6313166Abstract: Compounds of the formula I and the isomers thereof, in which either a) X is an N atom and Y is OR11 or N(R12)R13, or b) X is CH and Y is OR11, and in which furthermore: R11 is C1-C4alkyl; R12 and R13, independenty, are hydrogen or C1-C4alkyl; A is an O atom or the group NR4; and wherein R1, R2 and R3 are as defined herein, are pesticidal active ingredients. They can be used for pest control, in particular as microbicides, insecticides and acaricides in agriculture, horticulture and in the hygiene sector.Type: GrantFiled: June 22, 1999Date of Patent: November 6, 2001Assignee: Bayer AktiengesellschaftInventors: Hugo Ziegler, Stephan Trah, Saleem Farooq, René Zurflüh
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Patent number: 6235684Abstract: A method of combating phytopathogenic diseases on crop plants which comprises applying to the crop plants or the locus thereof being infested with said phytopathogenic disease an effective amount of a combination of a) a 2-(5-phenyl-3,6-diaza-2,7-dioxa-octa-3,5-dienyl)phenylacrylamide of formula I wherein R1 is hydrogen, fluoro or chloro, R2 is methyl, ethyl, trifluoromethyl, trifluoromethoxy, cyano, fluoro, chloro or bromo, with the proviso that R2 cannot be fluoro, chloro or bromo, when R1 is hydrogen; in association with b) a broad variety of otherplant fungicides is particularly effective in combating or preventing fungal diseases of crop plants. These combinations exhibit synergistic fungicidal activity.Type: GrantFiled: February 28, 2000Date of Patent: May 22, 2001Assignee: Novartis Crop Protection, Inc.Inventors: Gertrude Knauf-Beiter, René Zurflüh, Bettina Gsell
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Patent number: 6211240Abstract: Compounds of the formula I in which Y is hydrogen, C1-C4alkyl, C1-C4alkoxy, OH, CN, NO2, Si(CH3)3, CF3 or halogen, Z is a group a) R1 is hydrogen, C1-C4alkyl, C2-C4alkenyl, C2-C4-alkynyl, C3-C6cycloalkyl, phenyl which is unsubstituted or at most trisubstituted by halogen, C1-C4alkyl, C1-C4alkoxy, C1-C4alkylthio, or benzyl which is unsubstituted or at most trisubstituted in the aromatic ring in the same manner; or is cyclopropylmethyl, C1-C4haloalkyl, C2-C5alkoxyalkyl, cyanomethyl, CO—R6, OH, NH2, C1-C4alkylamine or C1-C4alkoxycarbonyl-C1-C2alkyl; X is oxygen, sulfur or NR5; R2 is hydrogen, C1-C4alkyl, C2-C4alkenyl, C2-C4alkynyl, C3-C6cycloalkyl, C(O)R6, OH or C1-C4alkoxy, NH2 or C1-C4alkylamine; R5 is hydrogen, C1-C4alkyl, C2-C4alkenyl or C2-C4alkynyl; R6 is hydrogen, C114 C4alkyl, C1-C4haloalkyl, C1-C4alkoxy, C3-C6cycloalkyl, C1-C4alkoxycarbonyl or phenyl which is unsubstituted or at most trisubstituted; and in which R3 and R4 independently of one another are hType: GrantFiled: October 29, 1996Date of Patent: April 3, 2001Assignee: Novartis CorporationInventor: René Zurflüh
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Patent number: 4215139Abstract: Carbamic acid derivatives, processes for their preparation, as well as pesticidal compositions containing the carbamic acid derivatives, and methods for their use, are disclosed.Type: GrantFiled: March 6, 1979Date of Patent: July 29, 1980Assignee: Hoffmann-La Roche Inc.Inventors: Ulf Fischer, Fernand Schneider, Rene Zurflueh
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Patent number: 4011335Abstract: Alkyl or alkenyl ethers of 1,2-methylene dioxy benzene which are useful in combatting insects by interfering with their hormonal system.Type: GrantFiled: June 5, 1975Date of Patent: March 8, 1977Assignee: Hoffmann-La Roche Inc.Inventors: Walter Hangartner, Rene Zurflueh