Patents by Inventor Suess, Rudolf

Suess, Rudolf 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).

  • Substituted 6-phenyl-octahydrobenzo [c] [1,6] naphthyridines
    Patent number: 4087530
    Abstract: This invention provides new compounds of formula I, ##STR1## wherein the indicated radical in the 8 or 9 position of the benzonaphthyridine structure (R.sub.1) is hydrogen, alkoxy of 1 to 4 carbon atoms or hydroxy, andR.sub.2, r.sub.3 and R.sub.4 are selected in certain combinations from hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, benzyloxy, hydroxy, halogen, nitro, amino, dimethylamino, or --NHCOR.sub.5wherein R.sub.5 is hydrogen or alkyl of 1 to 4 carbon atoms,Useful as bronchospasmolytics.
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: May 2, 1978
    Assignee: Sandoz Ltd.
    Inventors: Hans Ott, Suess, Rudolf