Patents by Inventor Roger S. Downing

Roger S. Downing 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).

  • Dimerization process catalyst
    Patent number: 4125483
    Abstract: An improved catalyst for the dimerization of butadiene to 4-vinylcyclohexene comprises a cation-exchangeable alumino silicate having incorporated in the lattice thereof by the exchange Cu(I) ions and alkali metal ions, preferably cesium ions.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: November 14, 1978
    Assignee: Shell Oil Company
    Inventors: Roger S. Downing, Jan VAN Amstel, Annie H. Joustra