Patents by Inventor Jean R. Desmurs

Jean R. Desmurs 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 preparation of hydroxybiphenyls
    Patent number: 4891452
    Abstract: A process for preparing hydroxybiphenyls. A bromobiphenyl is contacted with a base in aqueous liquid phase at a temperature less than or equal to 230.degree. C. in the presence of a copper-based catalyst. The hydroxyl ion concentration of base ranges from 0.1 to about 1.6 molar equivalents per liter. At temperatures less than 215.degree. C., a cocatalyst is preferably added.
    Type: Grant
    Filed: February 10, 1988
    Date of Patent: January 2, 1990
    Assignee: Rhone-Poulenc Chimie
    Inventors: Alain Nonn, Jean R. Desmurs