Patents by Inventor Michael M. Leippe

Michael M. Leippe 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).

  • Compounds
    Patent number: 5670456
    Abstract: N-carbamoyl-2-carboxyaryl-heterocyclic and hydrazinecarboximidamidehydrazone derivatives, intermediates and processes for their preparation, agricultural compositions containing them and their use as agricultural chemicals, in particular herbicides.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: September 23, 1997
    Assignee: Sandoz Ltd.
    Inventors: Richard J. Anderson, Joe T. Bamberg, Michael M. Leippe
  • Heterocyclic hydrazines and hydrazones
    Patent number: 5506191
    Abstract: N-carbamoyl-2-carboxyaryl-heterocyclic and hydrazinecarboximidamide-hydrazone derivatives, intermediates and processes for their preparation, agricultural compositions containing them and their use as agricultural chemicals, in particular herbicides.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: April 9, 1996
    Assignee: Sandoz Ltd.
    Inventors: Richard J. Anderson, Joe T. Bamberg, Michael M. Leippe
  • Substituted semi-carbazones and related compounds
    Patent number: 5098462
    Abstract: Substituted semicarbazones, thiosemicarbazones and isothiosemicarbazones and salts thereof, intermediates therefor, synthesis thereof, and the use of said compounds for the control of weeds.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: March 24, 1992
    Assignee: Sandoz Ltd.
    Inventors: Richard J. Anderson, Michael M. Leippe, Joe T. Bamberg
  • Compounds
    Patent number: 5098466
    Abstract: Substituted semicarbazones, thiosemicarbazones and isothiosemicarbazones and salts thereof, intermediates therefor, synthesis thereof, and the use of said compounds for the control of weeds.
    Type: Grant
    Filed: August 21, 1990
    Date of Patent: March 24, 1992
    Assignee: Sandoz Ltd.
    Inventors: Richard J. Anderson, Michael M. Leippe, Joe T. Bamberg
  • Compositions
    Patent number: 4544400
    Abstract: Substituted phenoxy- and pyridyloxybenzo-2,1,3-oxadiazoles, phenoxy- and pyridyloxybenzo-2,1,3-thiadazoles, and the N-oxides thereof, intermediates therefor, synthesis thereof, and the use of said compounds for the control of weeds.
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: October 1, 1985
    Assignee: Zoecon Corporation
    Inventors: Richard J. Anderson, Michael M. Leippe
  • Certain aralkyloxy or aralkylthio-pyridyl-phthalimides and their use as herbicides
    Patent number: 4406690
    Abstract: N-substituted pyridyl tetrahydrophthalimides, intermediates therefor and synthesis thereof which are useful herbicides.
    Type: Grant
    Filed: February 12, 1982
    Date of Patent: September 27, 1983
    Assignee: Zoecon Corporation
    Inventors: Richard J. Anderson, Michael M. Leippe
  • Certain aralkyloxy or thio-pyridyl-imidazo-pyridines and their herbicidal use
    Patent number: 4406689
    Abstract: 3-Pyridyl-1,5-tetramethylenehydantoins, 4-pyridyl-1,2-tetramethylenetriazolidine-3,5-diones, and the thioanalogs thereof, which compounds are useful as herbicides.
    Type: Grant
    Filed: February 22, 1982
    Date of Patent: September 27, 1983
    Assignee: Zoecon Corporation
    Inventors: Richard J. Anderson, Michael M. Leippe
  • Compositions and use
    Patent number: 4332944
    Abstract: N-substituted phenyl tetrahydrophthalimides, intermediates therefor and synthesis thereof, which compounds are useful herbicides.
    Type: Grant
    Filed: July 9, 1981
    Date of Patent: June 1, 1982
    Assignee: Zoecon Corporation
    Inventors: Richard J. Anderson, Michael M. Leippe
  • Esters and thiolesters of benzothienyl acids
    Patent number: 4224330
    Abstract: Esters and thiolesters of benzothienyl acids, intermediates thereof, synthesis thereof, and the use thereof for the control of pests.
    Type: Grant
    Filed: September 13, 1979
    Date of Patent: September 23, 1980
    Assignee: Zoecon Corporation
    Inventors: Clive A. Henrick, Jeffrey N. Labovitz, Michael M. Leippe, Sam L. Woo