Patents by Inventor Fritz Seemann

Fritz Seemann 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: 4434176
    Abstract: This invention provides compounds of formula I, ##STR1## wherein R.sub.1 is phenyl; phenyl monosubstituted with fluorine; phenyl mono- or disubstituted with chlorine; phenyl mono-, di- or trisubstituted with methyl or methoxy, secondary 1-phenoxyalkyl, the secondary alkyl residue of which is of 3 to 5 carbon atoms and in which the phenyl residue is unsubstituted or monosubstituted with chlorine, andeither R.sub.2 is hydrogen,and R.sub.3 is methyl,or R.sub.2 is methyland R.sub.3 is hydrogen or methyl,which are useful, for example, for treating coronary conditions.
    Type: Grant
    Filed: May 6, 1982
    Date of Patent: February 28, 1984
    Assignee: Sandoz Ltd.
    Inventors: Franz Troxler, Fritz Seemann
  • Patent number: 4340541
    Abstract: This invention provides compounds of formula I, ##STR1## wherein R.sub.1 is phenyl; phenyl monosubstituted with fluorine; phenyl mono- or disubstituted with chlorine; phenyl mono-, di- or trisubstituted with methyl or methoxy, secondary 1-phenoxyalkyl, the secondary alkyl residue of which is of 3 to 5 carbon atoms and in which the phenyl residue is unsubstituted or monosubstituted with chlorine, andeither R.sub.2 is hydrogen, and R.sub.3 is methyl,or R.sub.2 is methyl and R.sub.3 is hydrogen or methyl,which are useful, for example, for treating coronary conditions.
    Type: Grant
    Filed: April 10, 1980
    Date of Patent: July 20, 1982
    Assignee: Sandoz Ltd.
    Inventors: Franz Troxler, Fritz Seemann
  • Patent number: 3965095
    Abstract: The present invention concerns novel oxindole derivatives of the formula, ##SPC1##Wherein R.sub.1 and R.sub.2 are saturated or unsaturated substituted or unsubstituted hydrocarbon radicals, useful as antiarrhythmic and .beta.-blocking agents.
    Type: Grant
    Filed: June 18, 1973
    Date of Patent: June 22, 1976
    Assignee: Sandoz Ltd.
    Inventor: Fritz Seemann