Patents by Inventor Sebastien Huchette

Sebastien Huchette 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).

  • Polymerization process
    Patent number: 6894127
    Abstract: The present invention relates to a process for the gas-phase (co-)polymerization of olefins in a fluidised bed reactor using a late transition metal catalyst characterised in that the polymerization is performed in the presence of a process aid additive.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: May 17, 2005
    Assignee: BP Chemicals Limited
    Inventors: Patrick Daniel Yves Behue, Gacem Benazzouz, Laurent Coupier, David Heslop, Sebastien Huchette, Jean-Pierre Isnard, Willy Lemesle, Renaud Viguier
  • Polymerization control process
    Patent number: 6884856
    Abstract: The present invention relates to a continuous process for controlling the gas-phase co-polymerisation of olefins in a fluidised bed reactor. The present invention further relates to a method for the continuous gas-phase (co-)polymerisation of olefins in a fluidised bed reactor in the presence of a polymerisation catalyst wherein the density of the polymer powder particles leaving the reactor is maintained constant by controlling the particle size distribution of the polymerisation catalyst. The present invention also relates to a process for controlling the particle size distribution of a polymerisation catalyst in order to achieve the production of a polymer powder of constant density during the continuous gas-phase (co-)polymerisation of olefins in a fluidised bed reactor.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: April 26, 2005
    Assignee: BP Chemicals Limited
    Inventors: Gacem Benazouzz, Claire Couronne, Sebastien Huchette, Patrick Leaney, Christel Maire-Claude Mealares, Frederic Robert Marie Michel Morterol, Renaud Viguier
  • Polymerisation control process
    Publication number: 20050027085
    Abstract: The present invention relates to a process for controlling the gas-phase co-polymerisation of olefins in a fluidised bed reactor. The present invention futher relates to a method for the continuous gas-phase (co-)polymerisation of olefins in a fluidised bed reactor in the presence of a polymerisation catalyst wherein the density SPAN of the polymer powder particles leaving the reactor is maintained below certain values throughout the polymerisation.
    Type: Application
    Filed: October 22, 2002
    Publication date: February 3, 2005
    Inventors: Sebastien Huchette, Patrick Leaney, Frederic Morterol
  • Polymerisation control process
    Publication number: 20040186249
    Abstract: The present invention relates to a continuous process for controlling the gas-phase co-polymerisation of olefins in a fluidised bed reactor. The present invention further relates to a method for the continuous gas-phase (co-)polymerisation of olefins in a fluidised bed reactor in the presence of a polymerisation catalyst wherein the density of the polymer powder particles leaving the reactor is maintained constant by controlling the particle size distribution of the polymerisation catalyst. The present invention also relates to a process for controlling the particle size distribution of a polymerisation catalyst in order to achieve the production of a polymer powder of constant density during the continuous gas-phase (co-)polymerisation of olefins in a fluidised bed reactor.
    Type: Application
    Filed: January 15, 2004
    Publication date: September 23, 2004
    Inventors: Gacem Benazouzz, Claire Couronne, Sebastien Huchette, Patrick Leaney, Christel Maria-Claude Mealares, Frederic Robert Marie Michel Morterol, Renaud Viguier
  • Polymerisation process
    Publication number: 20040063878
    Abstract: The present invention relates to a process for the gas-phase (co-) polymerisation of olefins in a fluidised bed reactor using a late transition metal catalyst characterised in that the polymerisation is performed in the presence of a process aid additive.
    Type: Application
    Filed: October 21, 2003
    Publication date: April 1, 2004
    Inventors: Patrick Daniel Yves Behue, Gacem Benazouz, Laurent Coupier, David Heslop, Sebastien Huchette, Jean-Pierre Isnard, Willy Lemesle, Renaud Viguier