Patents by Inventor Dieter Duerr

Dieter Duerr 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).

  • Herbicidally active phenylformamidine compounds
    Patent number: 4209319
    Abstract: New phenylformamidine compounds are disclosed, which have the structure ##STR1## in which R is an unsaturated, halogenated radical, particularly a propenyl, butenyl or benzyl radical, mono- or disubstituted by fluorine chlorine or bromine. These compounds and their acid addition salts possess herbicidal properties.
    Type: Grant
    Filed: June 2, 1976
    Date of Patent: June 24, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Georg Pissiotas, Dieter Duerr, Otto Rohr
  • 4-Bromo-3-chloro-phenylisocyanate
    Patent number: 3975418
    Abstract: The present invention relates to new isocyanates of the formula ##SPC1##Wherein X represents fluorine or chlorine; these new isocyanates of formula I are valuable intermediates for the manufacture of herbicides.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: August 17, 1976
    Assignee: Ciba-Geigy AG
    Inventor: Dieter Duerr
  • Condensation products
    Patent number: 3960947
    Abstract: Formamidine compounds of the formula ##EQU1## or WHEREIN R.sub.1 represents a substituted or unsubstituted phenyl radical, R.sub.2 represents hydroogen, alkyl, alkenyl or alkinyl and R.sub.3 represents acyl their manufacture and their use in pest control.
    Type: Grant
    Filed: May 14, 1975
    Date of Patent: June 1, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Dieter Duerr, Georg Pissiotas