Patents by Inventor Josef Oren

Josef Oren 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).

  • Famotidine intermediates and their preparation
    Patent number: 5068405
    Abstract: Halogenated N-sulfamyl propionamidine addition salts corresponding to the formula ##STR1## are provided, in which X represents halogen and A represents an acid selected from sulfuric acid, nitric acid, benzenesulfonic acid; toluenesulfonic acid; 2,4,5-trichlorobenzenesulfonic acid; trichloroacetic acid; trifluoroacetic acid or methanesulfonic acid. They are useful as intermediates in the preparation of famotidine. They are prepared by reacting a halogenated propionitrile with the respective acid.
    Type: Grant
    Filed: July 6, 1990
    Date of Patent: November 26, 1991
    Assignee: Delmar Chemicals Inc.
    Inventors: Michel Bekhazi, Josef Oren