Patents by Inventor Bernard Le Gall

Bernard Le Gall 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 presulphurization of a hydrocarbon treatment catalyst
    Patent number: 5139983
    Abstract: The invention relates to a process making it possible when a refining catalyst is subject preferably in situ to the conventional activation reaction in the presence of hydrogen (generally at above 100.degree. C.) to carry out, as a result of the in situ presence of hydrogen, the sulphurization at the required stoichiometric or non-stoichiometric level of the active metal or metals in the composition of the catalyst. In the absence of hydrogen, the process consists of incorporating into the porosity of the new or regenerated catalyst at least one sulphurizing agent of general formula:R--S(n)--R'in which n is an integer from 3 to 20 and R represents an organic radical.The invention is characterized in that a critical elementary sulphur quantity is added to the sulphurizing agent.
    Type: Grant
    Filed: March 19, 1991
    Date of Patent: August 18, 1992
    Assignee: Europeenne de Retraitement de Catalyseurs (Eurecat)
    Inventors: Georges Berrebi, Bernard Le Gall