Patents by Inventor Pierre Gandilhon

Pierre Gandilhon 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 isomerization of aromatic alkenyl compounds
    Patent number: 4138411
    Abstract: Aromatic alkenyl compounds, for example, eugenol and safrole, are isomerized, for example to isoeugenol and isosafrole, by contact with a ruthenium or osmium catalyst.
    Type: Grant
    Filed: April 14, 1976
    Date of Patent: February 6, 1979
    Assignee: Rhone-Poulenc S. A.
    Inventor: Pierre Gandilhon
  • Preparation of aliphatic dinitriles
    Patent number: 3981900
    Abstract: The addition of a free metal of group VIII of the Periodic Table or of one of its oxides or hydroxides to acrylonitrile heated under a hydrogen pressure of 1 to 50 bars in the presence of a ruthenium derivative as catalyst improves the rate of conversion of the acrylonitrile into 1,4-dicyanobutenes and/or adiponitrile.
    Type: Grant
    Filed: April 30, 1971
    Date of Patent: September 21, 1976
    Assignee: Rhone-Poulenc S.A.
    Inventors: Pierre Chabardes, Pierre Gandilhon, Charles Grard, Michel Thiers