Patents by Inventor Kjell-Arne Solli

Kjell-Arne Solli 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).

  • Modified supported catalysts for the polymerization of olefins
    Patent number: 6841634
    Abstract: A modified supported olefin polymerization catalyst modified by prepolymerization with an olefin or an olefin mixture different from the olefin or olefin mixture of the subsequent olefin polymerization. The polymerization catalyst is a metallocene, and the melting or softening point of the polyolefin made using the catalyst is at least 20° C. lower than that of the prepolymerized polyolefin.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: January 11, 2005
    Assignee: Borealis Technology Oy
    Inventors: Eberhard Ernst, Jens Reussner, Per Roterud, Kjell-Arne Solli
  • Multistage polymerization process using a catalyst having different catalytically active sites
    Patent number: 6545105
    Abstract: The invention relates to a process for the preparation of an olefin polymer wherein olefin polymerization is effected in a plurality of polymerization reaction stages in the presence of an olefin polymerization catalyst material, characterized in that said catalyst material comprises at least two different types of active polymerization sites.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: April 8, 2003
    Inventors: Arild Follestad, Klaus Joachim Jens, Kjell-Arne Solli, Svein Nenseth