Patents by Inventor Gunther Dorhofer

Gunther Dorhofer 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).

  • Heterocyclic S-imino-S-oxides
    Patent number: 4045570
    Abstract: The invention relates to new heterocyclic S-imino-S-oxides of the formula I ##STR1## in which one of the symbols X.sub.1 and X.sub.2 denotes a direct bond and the other denotes the vinylene group --CH=CH-- or the epithio radical --S--, Y.sub.1 and Y.sub.2 conjointly denote an additional bond or one of the symbols denotes hydrogen and the other denotes hydrogen or, conjointly with the symbol R.sub.1 or R.sub.2, which is present on the same carbon atom, denotes the oxo radical, one of the symbols R.sub.1 and R.sub.2 denotes hydrogen or lower alkyl and the other denotes hydrogen or lower alkyl or, conjointly with the symbol Y.sub.1 or Y.sub.2, which is present on the same carbon atom, denotes the oxo radical, or, if Y.sub.1 and Y.sub.2 conjointly denote an additional bond, also denotes lower alkoxy, and R.sub.3 and R.sub.4 independently of one another denote hydrogen, halogen up to atomic number 35, lower alkyl, lower alkoxy or trifluoromethyl and R.sub.
    Type: Grant
    Filed: May 7, 1975
    Date of Patent: August 30, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Gunther Dorhofer, Roland Heckendorn, Erich Schmid, Angelo Storni, Armin Zust
  • Aminoacyl compounds
    Patent number: 3988467
    Abstract: The invention relates to new aminoacyl compounds of the formula I, ##SPC1##
    Type: Grant
    Filed: May 7, 1975
    Date of Patent: October 26, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Gunther Dorhofer, Roland Heckendorn, Erich Schmid, Angelo Storni, Armin Zust