Patents by Inventor Roger Claessens

Roger Claessens 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).

  • Apparatus for the production of polyethylene and ethylene copolymers
    Patent number: 7837950
    Abstract: The invention provides an apparatus and a process for the high pressure polymerization of ethylene, optionally with one or more comonomers, in which unreacted monomer is separated from the polymer in a separation system having at least first, second and third separation vessels and in which off gas from the second vessel is recombined back into the product mixture upstream of the first separation vessel, preferably using a jet pump.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: November 23, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Tom Van Nuland, Roger Claessens, Henri Aime Lammens, Geert Vaes
  • Apparatus for the Production of Polyethylene and Ethylene Copolymers
    Publication number: 20100022736
    Abstract: The invention provides an apparatus and a process for the high pressure polymerization of ethylene, optionally with one or more comonomers, in which unreacted monomer is separated from the polymer in a separation system having at least first, second and third separation vessels and in which off gas from the second vessel is recombined back into the product mixture upstream of the first separation vessel, preferably using a jet pump.
    Type: Application
    Filed: April 4, 2007
    Publication date: January 28, 2010
    Inventors: Tom Van Nuland, Roger Claessens, Henri Aime Lammens, Geert Vaes