Patents by Inventor Anna-Mari Illikainen

Anna-Mari Illikainen 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).

  • Process for the manufacture of polyolefins
    Patent number: 8124820
    Abstract: The present invention relates to a process for producing polyolefins wherein a feedstock comprising n-olefin or a mixture of n-olefins is dimerized in the presence of a solid acidic catalyst by passing the feedstock to a catalytic distillation apparatus comprising either a) a combination of a distillation column and a reactor comprising at least one catalyst bed, or b) a distillation column connected to one or more side reactors comprising at least one catalyst layer, recovering the unreacted n-olefin from the distillation column or the combination of the distillation column and the reactor at the upper part thereof as a side-stream to be combined with the feedstock, and the reaction product from the dimerization is hydrogenated.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: February 28, 2012
    Assignee: Neste Oil Oyj
    Inventors: Marja Tiitta, Anna-Mari Illikainen, Kari Kulmala, Vesa-Matti Lehtinen, Fredrik Nissfolk
  • Process for the manufacture of polyolefins
    Publication number: 20070293712
    Abstract: The present invention relates to a process for producing polyolefins wherein a feedstock comprising n-olefin or a mixture of n-olefins is dimerized in the presence of a solid acidic catalyst by passing the feedstock to a catalytic distillation apparatus comprising either a) a combination of a distillation column and a reactor comprising at least one catalyst bed, or b) a distillation column connected to one or more side reactors comprising at least one catalyst layer, recovering the unreacted n-olefin from the distillation column or the combination of the distillation column and the reactor at the upper part thereof as a side-stream to be combined with the feedstock, and the reaction product from the dimerization is hydrogenated.
    Type: Application
    Filed: June 13, 2007
    Publication date: December 20, 2007
    Applicant: Neste Oil Oyj
    Inventors: Marja Tiitta, Anna-Mari Illikainen, Kari Kulmala, Vesa-Matti Lehtinen, Fredrik Nissfolk