Patents by Inventor Katriina Mills

Katriina Mills 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).

  • Procatalyst composition containing substituted maleic or fumaric acid esters as an electron donor for olefin polymerization
    Patent number: 5436213
    Abstract: It is known that an electron donor together with a compound of tetravalent titanium on a magnesium halide carrier is usable if it is a mono- or polyester of an unsaturated polycarboxylic acid in which at least two carboxyl groups are joined to contiguous carbon atoms which form double bonds. It has now been observed that activity and stereospecificity increase if at least one of the said carbon atoms, or a carbon atom joined thereto by a double bond, is substituted by a hydrocarbon group having 1-20 carbon atoms. Maleic and fumaric acid esters substituted with the said hydrocarbon group can be mentioned as examples.
    Type: Grant
    Filed: August 2, 1993
    Date of Patent: July 25, 1995
    Assignee: Borealis Holding A/S
    Inventors: Eero Iiskola, Katriina Mills, Thomas Garoff, Timo Leinonen