Patents by Inventor Joan Darcissac

Joan Darcissac 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).

  • Protection of catalysts by deposition of a protective layer
    Patent number: 6294498
    Abstract: Process for passivation of a heterogenous catalyst of refining reactions or hydrocarbon hydroconversion reactions, characterized in that the external surface of the particles of said heterogeneous catalyst is coated with a protective layer that is made of a particularly inert material which can be eliminated in the reaction zone under the conditions of the reaction.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: September 25, 2001
    Assignee: Europeenne de Retraitement de Catalyseurs Eurecat
    Inventors: Joan Darcissac, Franck Labruyere, Nilanjan Brahma, Pierre Dufrense