Patents by Inventor Ketil Strand Andersen

Ketil Strand Andersen 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).

  • Olefin polymerization process
    Patent number: 6610799
    Abstract: A process for olefin polymerization in a reaction vessel, said process comprising polymerizing at least one &agr;-olefin in a polymerization stage employing a catalyst feed comprising 1) a first catalyst composition having at least two active catalytic sites capable of producing a first set of polymer components; 2) a second catalyst composition having at least two active catalytic sites capable of giving essentially the same set of polymer components as produced by the catalyst in feed (1) under the same polymerization conditions but these components in a different ratio to those produced by the catalyst composition of feed (1); wherein the amounts of catalyst compositions (1 and 2) fed into the reaction vessel are independently controlled.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: August 26, 2003
    Assignee: Borealis Technology Oy
    Inventors: Arild Follestad, Vidar Almqvist, Ketil Strand Andersen, Richard Blom, Ivar Martin Dahl, Arild Geir Andersen