Patents by Inventor Fred Kuhnen

Fred Kuhnen 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: 5665681
    Abstract: The invention discloses compounds of formula I ##STR1## wherein X is oxygen or sulfur,R is hydrogen, chlorine or fluorine,R.sub.1 is fluorine, chlorine, bromine, cyano or methyl,R.sub.2 is halogen, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, C.sub.1-6 alkylcarbonyloxy, C.sub.3-6 cycloalkoxy, C.sub.3-6 alkynyloxy, C.sub.3-6 alkenyloxy, --COOH, --CO--R.sub.3, --CO--NR.sub.4 R.sub.5, --NR.sub.6 R.sub.7, C.sub.2-6 alkenyl, N-pyrrolyl, 2-oxo-3-tetrahydrofuranyl or isC.sub.1-6 alkyl substituted with halogen, COOH, --CO--R.sub.3, --CO--NR.sub.8 R.sub.9, .dbd.N--OH, .dbd.N--C.sub.1-4 alkoxy, --O--CO--R.sub.3 or --O--C.sub.2-3 alkylene-O--; or isC.sub.2-6 alkenyl substituted with halogen, COOH, --CO--R.sub.3, --CO--NR.sub.8 R.sub.9 or C.sub.1-4 alkoxy; or isC.sub.1-6 alkoxy substituted with cyano, --CO--R.sub.3, C.sub.1-4 alkoxy, C.sub.3-6 cycloalkyl, oxiranyl, orC.sub.1-4 alkoxy or halogen; or isC.sub.3-6 alkenyloxy substituted by C.sub.2-5 alkynyl;R.sub.3 is C.sub.1-6 alkyl, C.sub.1-6 haloalkyl, C.sub.1-6 cyanoalkyl, C.sub.
    Type: Grant
    Filed: June 20, 1995
    Date of Patent: September 9, 1997
    Assignee: Sandoz Ltd.
    Inventors: Karl Seckinger, Sasank Sekhar Mohanty, Karlheinz Milzner, Fred Kuhnen
  • Patent number: 5482921
    Abstract: This invention relates to novel 2-(2,4,5-substituted phenyl) hydantoin compounds, intermediates therefor, synthesis thereof, and the use of said compounds for combatting weeds.
    Type: Grant
    Filed: December 2, 1992
    Date of Patent: January 9, 1996
    Assignee: Sandoz Ltd.
    Inventors: Karl Seckinger, Karlheinz Milzner, Fred Kuhnen, Sasank S. Mohanty
  • Patent number: 5403817
    Abstract: Novel arylaminocarbonyl compounds, intermediates therefore, and the use of said compounds for the control of weeds are disclosed.
    Type: Grant
    Filed: February 5, 1993
    Date of Patent: April 4, 1995
    Assignee: Sandoz Ltd.
    Inventors: Karl Seckinger, Fred Kuhnen
  • Patent number: 5362706
    Abstract: Hydantoin for the control of weeds are disclosed.
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: November 8, 1994
    Assignee: Sandoz Ltd.
    Inventors: Karl Seckinger, Fred Kuhnen
  • Patent number: 5312799
    Abstract: This invention described in this patent application relates to novel amides of the formula (I) ##STR1## wherein the substituents are as defined in the disclosure, intermediates for such amides, synthesis thereof and their use for the control of weeds.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: May 17, 1994
    Assignee: Sandoz Ltd.
    Inventors: Karl Seckinger, Karlheinz Milzner, Fred Kuhnen, Sasank S. Mohanty
  • Patent number: 5221744
    Abstract: Arylaminocarbonyl compounds of the formula (I) ##STR1## wherein R.sub.2-6, X.sub.1, A and m are as defined in the disclosure, intermediates therefore, synthesis thereof, and the use of said compounds for the control of weeds are described.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: June 22, 1993
    Assignee: Sandoz Ltd.
    Inventors: Karl Seckinger, Karlheinz Milzner, Fred Kuhnen, Sasank S. Mohanty
  • Patent number: 4859699
    Abstract: Substituted N-benzoyl-N'-thienylureas, processes for making these compounds, intermediates therefor and the use of the compounds for the control of pests, and in particular for the control of insects and acarids.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: August 22, 1989
    Assignee: Sandoz Ltd.
    Inventors: Robert L. Carney, Alfred S. T. Lui, Fred Kuhnen, John M. Gruber
  • Patent number: 4666502
    Abstract: The invention provides 5-membered heteroaromatic compounds of formula IArN(Y)COCH.sub.2 Cl Iwherein Ar is a 5-membered heteroaromatic group comprising 1 or 2 heteroatoms selected from O, S and N and linked by a ring C-atom to the N-atom of the N(Y)COCH.sub.2 Cl group to which it is bound, whereby where Ar is pyrazolyl, said N(Y)COCH.sub.2 Cl group is in the 4-position,and Y is as specified in the description,the use of these compounds as herbicides, compositions for facilitating such use and the preparation of the chloroacetamides.
    Type: Grant
    Filed: February 3, 1983
    Date of Patent: May 19, 1987
    Assignee: Sandoz Ltd.
    Inventors: Karl Seckinger, Fred Kuhnen, Karlheinz Milzner
  • Patent number: 4657579
    Abstract: The invention provides novel pyrimidine compounds substituted in the 5-position by a chloroacetylamino group which are useful as herbicides. Other objects of the invention are herbicidal compositions comprising such novel compounds and methods of combatting weeds with the aid of said novel compounds.
    Type: Grant
    Filed: March 6, 1985
    Date of Patent: April 14, 1987
    Assignee: Sandoz Ltd.
    Inventors: Karlheinz Milzner, Fred Kuhnen, Karl Seckinger