Patents Represented by Attorney Richard E. Villa

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  • Pyrazoline compounds
    Patent number: 3956280
    Abstract: The invention provides novel pyrazoline derivatives which are useful as optical brighteners.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: May 11, 1976
    Assignee: Sandoz Ltd.
    Inventors: Fritz Fleck, Peter Stuart Littlewood, Alec Victor Mercer
  • 4-(Hydroxy-substituted-amino)-furo[3,2-c]pyridines
    Patent number: 3941797
    Abstract: Disclosed are compounds of the class of furo[3,2-c]pyridines substituted at the 4-position by an amino function bearing a hydroxy-alkyl nitrate moiety, e.g., 4-[ 4-(2-hydroxyethyl)-1-piperazino]-furo[3,2-c]pyridine nitrate. The compounds have pharmacological activity in animals and are useful, for example, as anti-anginal agents. Also disclosed are the corresponding hydroxy intermediates which are useful in preparation of the nitrates and also as anti-anginal agents or as agents in the treatment of shock.
    Type: Grant
    Filed: July 26, 1974
    Date of Patent: March 2, 1976
    Assignee: Sandoz, Inc.
    Inventor: William R. Simpson