Patents by Inventor Rudi Eisenacht

Rudi Eisenacht 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).

  • Process for preparing a 1,1,1-trifluoro-2-aminoalkane
    Patent number: 6166259
    Abstract: The invention relates to a process for the preparation of a 1,1,1-trifluoro-2-aminoalkane of formula I ##STR1## wherein R.sup.1 represents an optionally substituted alkyl group; which comprises heating a mixture consisting essentially of a compound of formula II ##STR2## wherein R.sup.1 has the meaning given, and R.sup.2 represents an optionally substituted aryl group, a primary amine, and optionally a base and/or an inert diluent, whereby the compound of formula I is removed by distillation during the heating procedure.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: December 26, 2000
    Assignee: American Cyanamid Company
    Inventors: Rudi Eisenacht, Hans-Peter Niedermann, Dieter Landau
  • Process for the preparation of halogenated phenylmaloates
    Patent number: 6156925
    Abstract: A process for the preparation of dialkyl phenylmalonates of formula I, ##STR1## wherein R, R.sup.1, L.sup.1 and L.sup.2 have the meaning given in the claims which comprises treating an phenylbromide of formula II ##STR2## with a dialkyl malonate of formula III ##STR3## in an inert solvent in the presence of a base and a copper salt, wherein 1.0 mole of the phenylbromide of formula II is treated with the enolate obtained from 2.0 to 4.0 moles of the dialkyl malonate of formula III and 2.0 to 3.8 moles of the base.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: December 5, 2000
    Assignee: American Cyanamid Company
    Inventors: Oliver Meyer, Rudi Eisenacht
  • Herbicidal compounds
    Patent number: 5759956
    Abstract: A compound of the general formula (I) ##STR1## wherein A represents a group of general formula ##STR2## and R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, X, Q.sup.2, Q.sup.3, and n are as described in the specification. The compounds of formula (I) are useful as agricultural herbicides.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: June 2, 1998
    Assignee: American Cyanamid Company
    Inventors: Hans-Peter Niedermann, Rudi Eisenacht