Patents by Inventor John E. Coutant

John E. Coutant 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).

  • 6-Hydroxyalkylamino-8-methyl-1,2,4-triazolo-[4,3-b]pyridazine and related compounds
    Patent number: 4578464
    Abstract: 8-Methyl-1,2,4-triazolo[4,3-b]pyridazines having a hydroxyalkylamino substituent at the 6-position are described herein. The compounds involved are useful as bronchodilator agents and they are prepared by the reaction of 6-chloro-8-methyl-1,2,4-triazolo[4,3-b]-pyridazine with an appropriate amino alcohol.
    Type: Grant
    Filed: November 22, 1983
    Date of Patent: March 25, 1986
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Robert J. Cregge, John E. Coutant