Patents by Inventor Robert Nyfeler

Robert Nyfeler 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).

  • Patent number: 4780551
    Abstract: The invention relates to novel 3-phenyl-4-cyanopyrrole derivatives of the general formula ##STR1## wherein X has the following meanings: A: hydrogen or CO--R.sub.1, wherein R.sub.1 is C.sub.1 -C.sub.6 alkyl which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.3 alkoxy; or is C.sub.3 -C.sub.6 -alkenyl, C.sub.3 -C.sub.6 alkynyl, or C.sub.1 -C.sub.6 alkoxy which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.3 alkoxy; or is C.sub.3 -C.sub.6 alkenyloxy, C.sub.3 -C.sub.6 cycloalkyl or tetrahydrofur-2-yl;B: S--R.sub.2, wherein R.sub.2 is C.sub.1 -C.sub.3 haloalkyl;C: CH(Y)R.sub.3, wherein R.sub.3 is hydrogen or C.sub.1 -C.sub.8 haloalkyl and Y is hydroxy, halogen or OC(O)R.sub.4, wherein R.sub.4 is C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.8 -haloalkyl, C.sub.2 -C.sub.6 alkenyl, tetrahydrofur-2-yl, tetrahydropyran-2-yl or C.sub.1 -C.sub.6 alkoxycarbonyl;D: CH.sub.2 --Z, wherein Z is one of the groups ##STR2## in which formula each of R.sub.5 and R.sub.
    Type: Grant
    Filed: July 31, 1987
    Date of Patent: October 25, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Robert Nyfeler, Josef Ehrenfreund
  • Patent number: 4767443
    Abstract: There are described novel, microbicidally active 5-(arylmethylimino)-pyrimidines of the formula I ##STR1## wherein R.sub.n --A-- is an unsubstituted or substituted phenyl, naphthyl, biphenyl, phenoxyphenyl or phenylthiophenyl, and R.sub.1 is an ether, thioether or amino function, these substances being produced according to the invention by substitution of the halogen atom in the claimed intermediates of the formula II ##STR2## The use of these substances in plant protection, and also further important intermediates, are likewise described.
    Type: Grant
    Filed: September 13, 1985
    Date of Patent: August 30, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Helmut Zondler, Wolfgang Eckhardt, Robert Nyfeler
  • Patent number: 4753954
    Abstract: Combinations of the fungicides propiconazol and fenpropidin, which are both inhibitors of ergosterol biosynthesis, exhibit a synergistically enhanced activity against fungi. The active components may also be applied individually in immediate succession.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: June 28, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Reinhard Janicke, Robert Nyfeler
  • Patent number: 4705800
    Abstract: The invention relates to novel 3-phenyl-4-cyanopyrrole derivatives of the general formula ##STR1## wherein X has the following meaning: A: hydrogen or CO--R.sub.1, wherein R.sub.1 is C.sub.1 -C.sub.6 alkyl which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.3 alkoxy; or is C.sub.3 -C.sub.6 alkenyl, C.sub.3 -C.sub.6 alkylnyl, or C.sub.1 -C.sub.6 alkoxy which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.3 alkoxy; or is C.sub.3 14 C.sub.6 alkenyloxy, or C.sub.3 -C.sub.6 cycloalkyl;B: S--R.sub.2, wherein R.sub.2 is C.sub.1 -C.sub.3 haloalkyl;C: CH(Y)R.sub.3, wherein R.sub.3 is hydrogen or C.sub.1 -C.sub.8 haloalklyl and Y is hydroxy, halogen or OC(O)R.sub.4, wherein R.sub.4 is C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.8 haloalkyl, C.sub.2 -C.sub.6 alkenyl, or C.sub.1 -C.sub.6 alkoxycarbonyl; orD: CH.sub.2 --Z, wherein Z is the group ##STR2## in which formula each of R.sub.5 and R.sub.6 independently of the other is hydrogen, C.sub.1 -C.sub.
    Type: Grant
    Filed: June 13, 1986
    Date of Patent: November 10, 1987
    Assignee: Ciba-Geigy Corporation
    Inventors: Robert Nyfeler, Josef Ehrenfreund
  • Patent number: 4690942
    Abstract: The invention relates to 1-aryl-2-fluoro-2-azolyl alkanones, alkanols, esters and ethers of formula I ##STR1## wherein Az is 1H-1,2,4-triazole, 4H-1,2,4-triazole or 1H-imidazole;T is --C(O)--, --CH(OH)-- or one of the groups ##STR2## wherein R.sub.7 is C.sub.1 -C.sub.6 alkyl which is unsubstituted or substituted by C.sub.1 -C.sub.3 -alkoxy, halogen or cyano, or is C.sub.3 -C.sub.6 alkenyl, C.sub.3 -C.sub.6 alkynyl, C.sub.3 -C.sub.6 cycloalkyl, 2-furyl, 2-tetrahydrofuryl, or is phenyl or benzyl, each unsubstituted or substituted by halogen, nitro, C.sub.1 -C.sub.3 -alkyl, C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 haloalkyl and/or C.sub.1 -C.sub.3 haloalkoxy;R.sub.8, R.sub.9 and R.sub.10 are each independently hydrogen, nitro, halogen, cyano, C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 haloalkoxy, --COO(C.sub.1 -C.sub.3 alkyl), NH.sub.2 or NHCOCH.sub.3 ;R is hydrogen or C.sub.1 -C.sub.6 alkyl;R.sub.1 and R.sub.2 are each independently hydrogen, halogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.
    Type: Grant
    Filed: December 14, 1984
    Date of Patent: September 1, 1987
    Assignee: CIBA-GEIGY Corporation
    Inventors: Willy Frick, Alfred Meyer, Robert Nyfeler
  • Patent number: 4657921
    Abstract: There are described novel 1-fluoro-1-azolyl-2,2-diarylethane derivatives of the general formula I ##STR1## wherein Y is --CH.dbd. or --N.dbd.,R.sub.1 is hydrogen or C.sub.1 -C.sub.3 -alkyl, andR.sub.2, R.sub.3, R.sub.4 and R.sub.5 independently of one another are each hydrogen, halogen, methyl, methoxy, CF.sub.3, OCF.sub.3, OCHF.sub.2, cyano, and/or phenoxy which is unsubstituted or substituted by fluorine, chlorine and/or bromine;including the acid addition salts and metal complexes thereof.Also the production of these substances as well as their microbicidal action and their use in various fields of application are described.
    Type: Grant
    Filed: May 16, 1985
    Date of Patent: April 14, 1987
    Assignee: Ciba-Geigy Corporation
    Inventors: Willy Frick, Alfred Meyer, Robert Nyfeler
  • Patent number: 4567052
    Abstract: The invention relates to novel N-alkylated 3-phenyl-4-cyanopyrrole derivatives of the formula I ##STR1## wherein R.sub.1 and R.sub.2, each independently of the other, are hydrogen, halogen, methoxy or methylthio,R.sub.3 is hydrogen or C.sub.1 -C.sub.8 haloalkyl,Y is hydroxy, halogen or the --O--C(O)--R.sub.4 group, andR.sub.4 is hydrogen, C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.8 haloalkyl, C.sub.2 -C.sub.6 alkenyl, 2-tetrahydrofuryl, 2-tetrahydropyranyl, C.sub.1 -C.sub.6 alkoxycarbonyl or the --CH(R.sub.5)--XR.sub.6 group, whereinX is oxygen or sulfur,R.sub.5 is hydrogen or C.sub.1 -C.sub.3 alkyl, andR.sub.6 is C.sub.1 -C.sub.6 alkyl, (C.sub.1 -C.sub.6 alkoxy)-C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.6 alkenyl, C.sub.3 -C.sub.6 alkynyl, phenyl or phenyl which is substituted by halogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, or C.sub.1 -C.sub.6 alkoxycarbonyl.
    Type: Grant
    Filed: June 8, 1984
    Date of Patent: January 28, 1986
    Assignee: Ciba-Geigy Corporation
    Inventor: Robert Nyfeler
  • Patent number: 4546099
    Abstract: The invention relates to novel N-aminomethyl-3-phenyl-4-cyanopyrrole derivatives of the formula I ##STR1## wherein R.sub.1 and R.sub.2 are each independently hydrogen, halogen, methoxy or methylthio,Z is a group ##STR2## wherein R.sub.3 and R.sub.4 are each independently hydrogen, C.sub.1 -C.sub.6 alkyl which is unsubstituted or substituted by cyano, C.sub.1 -C.sub.6 alkoxy or C.sub.1 -C.sub.6 alkoxycarbonyl; or are C.sub.3 -C.sub.6 alkenyl, C.sub.3 -C.sub.6 alkynyl, C.sub.3 -C.sub.7 cycloalkyl, benzyl or benzyl which is substituted by halogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 haloalkyl and/or C.sub.1 -C.sub.6 alkoxy, or phenyl or phenyl which is substituted by halogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 haloalkyl and/or C.sub.1 -C.sub.6 alkoxy, with the proviso that only one of R.sub.3 or R.sub.4 can be hydrogen,R.sub.5 and R.sub.6 are each independently hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.
    Type: Grant
    Filed: July 18, 1984
    Date of Patent: October 8, 1985
    Assignee: Ciba-Geigy Corporation
    Inventor: Robert Nyfeler
  • Patent number: 4483707
    Abstract: Phenylamino-oxo-acetic acids and the esters thereof, of the formula I ##STR1## wherein X.sub.1 and X.sub.2, each independently of the other, are halogen or halomethoxy, or one of X.sub.1 and X.sub.2 is also hydrogen,R.sub.1 is hydrogen or C.sub.1 -C.sub.4 alkyl, andR.sub.2 is hydrogen or an unsubstituted or substituted C.sub.1 -C.sub.18 alkyl, C.sub.3 -C.sub.18 alkenyl, C.sub.3 -C.sub.6 alkynyl or C.sub.3 -C.sub.8 cycloalkyl radical,are able to protect cultivated plants from the phytotoxic action of aggressive herbicides. Preferred herbicides are those of the classes of .alpha.-(phenoxyphenoxy)propionic acid and .alpha.-(pyridyloxyphenoxy)propionic acid derivatives. The cultivated plants to be protected are primarily monocots, i.e. cereals.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: November 20, 1984
    Assignee: Ciba-Geigy Corporation
    Inventors: Werner Breitenstein, Werner Fory, Robert Nyfeler, Manfred Boger
  • Patent number: 4338327
    Abstract: Novel 1-(2-aryl-1,3-dioxolan-2-ylmethyl)-1H-1,2,4-triazoles wherein the 1,3-dioxolane ring is substituted in the 4-position which are useful for the protection of plants and plant products against fungal attack.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: July 6, 1982
    Assignee: Janssen Pharmaceutica, N.V.
    Inventors: Jan Heeres, Leo Backx, Adolf Hubele, Robert Nyfeler
  • Patent number: 4333949
    Abstract: 2,3-Dichloro-7-hydroxy-1H-inden-1-one derivatives of the formula I ##STR1## wherein R.sub.1 is hydrogen or one of the groups ##STR2## R.sub.2 and R.sub.3 independently of one another are each hydrogen, fluorine, chlorine, bromine, C.sub.1 -C.sub.4 -alkyl, trifluoromethyl or nitro,R.sub.4 is hydrogen, C.sub.1 -C.sub.6 -alkyl or C.sub.2 -C.sub.4 -alkenyl, each of which is unsubstituted or substituted by halogen, or R.sub.4 is phenyl which is unsubstituted or is substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, halogen, trifluoromethyl, cyano or nitro, or it is a C.sub.3 -C.sub.6 -cycloalkyl group, andR.sub.5 is C.sub.1 -C.sub.6 -alkyl, C.sub.3 -C.sub.6 -cycloalkyl or C.sub.2 -C.sub.4 -alkenyl.These compounds exhibit a microbicidal action against in particular phytopathogenic fungi and bacteria.
    Type: Grant
    Filed: June 5, 1981
    Date of Patent: June 8, 1982
    Assignee: Ciba-Geigy Corporation
    Inventors: Elmar Sturm, Robert Nyfeler
  • Patent number: 4332816
    Abstract: Novel compounds of the formula ##STR1## wherein R.sub.1 is chlorine, bromine or nitro, R.sub.2 is chlorine or bromine, R.sub.3 is hydrogen or fluorine, R.sub.4 is C.sub.1 -C.sub.9 alkyl which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.3 alkoxy, or is C.sub.2 -C.sub.7 alkenyl, C.sub.2 -C.sub.4 alkynyl or C.sub.3 -C.sub.6 cycloalkyl, each of which is unsubstituted or substituted by halogen or aryl, or is phenyl which is unsubstituted or substituted by halogen, nitro or C.sub.1 -C.sub.4 alkyl, or is a 5-membered heterocyclic ring system which contains a hetero-atom, or is X-R.sub.5, wherein X is oxygen or sulfur and R.sub.5 is C.sub.1 -C.sub.6 alkyl or C.sub.3 -C.sub.6 alkenyl, each of which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.3 alkoxy, or is phenyl which is unsubstituted or substituted by halogen, nitro, C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.3 alkoxy, or is benzyl which is unsubstituted or substituted by halogen or nitro.
    Type: Grant
    Filed: December 3, 1980
    Date of Patent: June 1, 1982
    Assignee: Ciba-Geigy Corporation
    Inventor: Robert Nyfeler
  • Patent number: 4291061
    Abstract: 2,3-Dichloro-7-hydroxy-1H-inden-1-one derivatives of the formula I ##STR1## wherein R.sub.1 is hydrogen or one of the groups ##STR2## R.sub.2 and R.sub.3 independently of one another are each hydrogen, fluorine, chlorine, bromine, C.sub.1 -C.sub.4 -alkyl, trifluoromethyl or nitro,R.sub.4 is hydrogen, C.sub.1 -C.sub.6 -alkyl or C.sub.2 -C.sub.4 -alkenyl, each of which is unsubstituted or substituted by halogen, or R.sub.4 is phenyl which is unsubstituted or is substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, halogen, trifluoromethyl, cyano or nitro, or it is a C.sub.3 -C.sub.6 -cycloalkyl group, andR.sub.5 is C.sub.1 -C.sub.6 -alkyl, C.sub.3 -C.sub.6 -cycloalkyl or C.sub.2 -C.sub.4 -alkenyl.These compounds exhibit a microbicidal action against in particular phytopathogenic fungi and bacteria.
    Type: Grant
    Filed: October 31, 1979
    Date of Patent: September 22, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Elmar Sturm, Robert Nyfeler
  • Patent number: 4259505
    Abstract: An improved process for the preparation of 2-tert.-butyl-2-[1-phenoxy-1-(1H-azol-1-yl)]-methyl-ketales is disclosed, which process comprises reacting a 2-tert.-butyl-2-[1-phenoxy-1-halo]-methyl-ketale with a quaternary ammonium or phosphonium salt of an azole. The azoles used are 1H-1,2,4-triazole or 1H-imidazole.
    Type: Grant
    Filed: March 4, 1980
    Date of Patent: March 31, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Elmar Sturm, Wolfgang Eckhardt, Bernhard Gloor, Robert Nyfeler