Patents by Inventor Joseph R. Brepoels

Joseph R. Brepoels 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).

  • Process for the arylation of olefines
    Patent number: 4145362
    Abstract: A process for arylating an olefinic compound by addition of an aryl group to a double bond of said olefinic compound consisting in diazotizing an arylamine in an aqueous acidic solution comprising a lower alkanoic acid to form a solution of an aryldiazonium salt and reacting said aryldiazonium salt solution with an olefinic compound in an organic solvent in the presence of a catalytically effective amount of a copper halide.The amount of alkanoic acid is about 15 to 37% by volume of the total solvents used. The alkanoic acid is preferably acetic acid and the copper halide cuprous chloride.
    Type: Grant
    Filed: May 10, 1977
    Date of Patent: March 20, 1979
    Assignee: S.A. P R B en Neerlandais PRB N.V.
    Inventors: Joseph R. Brepoels, Jean-Marie Vaneghem