Patents by Inventor Johannes J. Maria Snel

Johannes J. Maria Snel 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).

  • Polymerization process
    Patent number: 4948870
    Abstract: Linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon are produced in the presence of novel catalyst compositions formed from a palladium salt, the anion of a non-hydrohalogenic acid having a pKa less than 2 and a bidentate ligand having one atom of phosphorous and one atom of sulfur or selenium.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: August 14, 1990
    Assignee: Shell Oil Company
    Inventors: Johannes Van Doorn, Arris H. Kramer, Johannes J. Maria Snel