Patents by Inventor Nathalie Lett

Nathalie Lett 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).

  • Doped alumino-silicate catalyst and improved process for treatment of hydrocarbon feeds
    Patent number: 7879224
    Abstract: The present invention concerns doped catalysts on an alumino-silicate support with an adapted macropore content and hydrocracking/hydroconversion and hydrotreatment processes employing them. The catalyst comprises at least one hydrodehydrogenating element selected from the group formed by elements from group VIB and group VIII of the periodic table, a controlled quantity of phosphorus (optionally in combination with boron and/or silicon) as a doping element, and a non-zeolitic support based on alumina-silica containing a quantity of more than 5% by weight and 95% by weight or less of silica (SiO2).
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: February 1, 2011
    Assignee: IFP Energies Nouvelles
    Inventors: Patrick Euzen, Alexandra Chaumonnot, Magalie Roy-Auberger, Patrick Bourges, Tivadar Cseri, Maryline Delage, Nathalie Lett
  • Doped alumino-silicate catalyst and improved process for treatment of hydrocarbon feeds
    Publication number: 20090188834
    Abstract: The present invention concerns doped catalysts on an alumino-silicate support with an adapted macropore content and hydrocracking/hydroconversion and hydrotreatment processes employing them. The catalyst comprises at least one hydrodehydrogenating element selected from the group formed by elements from group VIB and group VIII of the periodic table, a controlled quantity of phosphorus (optionally in combination with boron and/or silicon) as a doping element, and a non-zeolitic support based on alumina-silica containing a quantity of more than 5% by weight and 95% by weight or less of silica (SiO2).
    Type: Application
    Filed: September 20, 2005
    Publication date: July 30, 2009
    Inventors: Patrick Euzen, Alexandra Chaumonnot, Magalie Roy-Auberger, Partick Bourges, Tivadar Cseri, Maryline Delage, Nathalie Lett