Patents by Inventor Claude Dujardin

Claude Dujardin 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 and apparatus for effecting three-phase catalytic reactions
    Patent number: 4187169
    Abstract: Liquid and gas materials are reacted in the presence of a catalyst in a reactor of the dispersed bed type which comprises a plurality of superposed chambers through which the catalyst progressively drops, its rate of transfer from one chamber to another being controlled by injecting an auxiliary fluid into downcomers through which the catalyst is forced to pass.
    Type: Grant
    Filed: March 10, 1978
    Date of Patent: February 5, 1980
    Assignee: Institut Francais du Petrol
    Inventors: Jean-Paul Euzen, Daniel Vuillemot, Claude Dujardin