Patents by Inventor John A. Schulz

John A. Schulz 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).

  • Hexahydroindolizinones useful for treating cardiac arrhythmia, thrombotic disorders in mammals
    Patent number: 4567270
    Abstract: This invention relates to hexahydroindolizinones, which are useful as inhibitors of cardiac arrhythmias and of platelet aggregation and are therefore useful in the treatment of irregular heartbeat and in the prevention of thrombus formation.
    Type: Grant
    Filed: September 17, 1984
    Date of Patent: January 28, 1986
    Assignee: G. D. Searle & Co.
    Inventors: Robert J. Chorvat, Kathleen A. Prodan, John A. Schulz
  • 21-(Acetyloxy)-3-oxo-24-norchola-4,20(22)-diene-23-nitrile and intermediates thereto
    Patent number: 4110325
    Abstract: Preparation of 21-(acetyloxy)-3-oxo-24-norchola-4,20(22)-diene-23-nitrile; its diuretic, antiulcerogenic, and antiviral utility; and intermediates whereby the preparation can be variously effected are disclosed.
    Type: Grant
    Filed: August 10, 1977
    Date of Patent: August 29, 1978
    Assignee: G. D. Searle & Co.
    Inventors: George R. Lenz, John A. Schulz