Patents by Inventor Ruth Beatrice Küng

Ruth Beatrice Küng 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).

  • Fungicidal compositions based on metalaxyl
    Patent number: 6534533
    Abstract: Metalaxyl having a high content of R-enantiomer of more than 70% by weight, or pure R-metalaxyl, in admixture with 4-[3-(4-chlorophenyl)-3-(3,4-dimethoxyphenyl)acryloyl]-morpholine (“dimethomorph”) or 3-anilino-5-methyl-5-(4-phenoxyphenyl)-1, 3-oxazolidine-2,4-dione (“famoxadone”), exhibits a clearly enhanced fungicidal action against plant diseases compared with a mixture of the same kind in which metalaxyl is used in the form of a racemate.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: March 18, 2003
    Assignee: Syngenta Crop Protection, Inc.
    Inventors: Ruth Beatrice Küng, Micha Wicki, Cosima Nuninger, Martin Weiss
  • Crop protection products
    Patent number: 6335355
    Abstract: Plant-protecting mixtures of active ingredients having a synergistically increased action, wherein component I is a compound having a plant-immunizing action of the formula I in which Z is CN, COOH or a salt thereof, CO—OC1-C4alkyl or CO—SC1-C4alkyl; and wherein component II is a compound selected from the group consisting of tebuconazol, epoxyconazol, cyproconazol, metconazol and tetraconazol.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: January 1, 2002
    Assignee: Syngenta Investment Corporation
    Inventors: Wilhelm Ruess, Gertrud Knauf-Beiter, Ruth Beatrice Küng, Helmut Kessmann, Michael Oostendorp
  • Microbicides
    Patent number: 6313121
    Abstract: Metalaxyl having a high content of R-enantiomer of more than 70% by weight, or pure R-metalaxyl, in admixture with 4-[3-(4-chloropheny)-3-(3,4-dimethoxyphenyl)acryloyl]morpholine (“dimethomorpho”) or 3-anilino-5-methyl-5-(4-phenoxyphenyl)-1,3-oxazolidine-2,4-dione (“famoxadone”), exhibits a clearly enhanced fungicidal action against plant diseases compared with a mixture of the same kind in which metalaxyl is used in the form of a racemate.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: November 6, 2001
    Assignee: Syngenta Crop Protection, Inc.
    Inventors: Ruth Beatrice Küng, Micha Wicki, Cosima Nuninger, Martin Weiss
  • Crop protection products
    Patent number: 6248748
    Abstract: Plant-protecting mixtures of active ingredients having a synergistically increased action, wherein component I is a compound having a plant-immunizing action of the formula I in which Z is CN, COOH or a salt thereof, CO—OC1-C4alkyl or CO—SC1-C4alkyl; and wherein component II is a compound selected from the group consisting of propiconazole, difenoconazole, penconazole, fenpropimorph, fenpropidine, cyprodinil, metalaxyl, R-metalaxyl and pyroquilon.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: June 19, 2001
    Assignee: Syngenta Investment Corporation
    Inventors: Wilhelm Ruess, Gertrude Knauf-Beiter, Ruth Beatrice Küng, Helmut Kessmann