Patents by Inventor Roger L. Claessens

Roger L. 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).

  • High pressure polymerization process
    Patent number: 8445606
    Abstract: The invention relates to high pressure tubular reactor olefin polymerization plants having improved specific energy consumption. The plants may be newly constructed or made by de-bottlenecking an existing plant. The tube of the tubular reactor may have improved arrangements for cooling to increase conversion and optimized polymer-recycle gas separation arrangements using a jet pump for recycling unreacted monomer while permitting haze to be maintained. The improved cooling arrangements include a reduced pressure cooling zone forming the tail end of the tube and/or a shortened heating zone for the front feed and allowing more monomer to be fed as a side feed.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: May 21, 2013
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Henri A. Lammens, Tom Van Nuland, Ivo T. Goossens, Roger L. Claessens, Geert Vaes, Paul Jan Clymans
  • High Pressure Polymerization Process
    Publication number: 20110275770
    Abstract: The invention relates to high pressure tubular reactor olefin polymerization plants having improved specific energy consumption. The plants may be newly constructed or made by de-bottlenecking an existing plant. The tube of the tubular reactor may have improved arrangements for cooling to increase conversion and optimized polymer-recycle gas separation arrangements using a jet pump for recycling unreacted monomer while permitting haze to be maintained. The improved cooling arrangements include a reduced pressure cooling zone forming the tail end of the tube and/or a shortened heating zone for the front feed and allowing more monomer to be fed as a side feed.
    Type: Application
    Filed: December 18, 2008
    Publication date: November 10, 2011
    Inventors: Henri A. Lammens, Tom Van Nuland, Ivo T. Goossens, Roger L. Claessens, Geert Vaes, Paul Jan Clymans