Patents by Inventor Marinus J. Spiessens

Marinus J. Spiessens 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 catalytic cracking of a hydrocarbon oil
    Patent number: 5160706
    Abstract: A device for introducing a hydrocarbon into a riser reactor containing a tubular diluent gas conduit having an interior surface and exterior wall surface where the interior wall surface is for passing a diluent gas into the reactor and two or more tubular hydrocarbon supply conduits, longitudinally perforated, arranged within the tubular diluent gas conduit where the longitudinal perforations are adapted to pass the diluent gas from the tubular diluent gas conduit into the tubular hydrocarbon supply conduit.
    Type: Grant
    Filed: June 5, 1991
    Date of Patent: November 3, 1992
    Assignee: Shell Oil Company
    Inventors: Frank H. H. Khouw, Marinus J. Spiessens, Martin J. P. C. Nieskens, Jouke J. Woudstra