Patents by Inventor Robert J. Jorgesen

Robert J. Jorgesen 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).

  • Multistage process for producing ethylene polymer compositions
    Patent number: 8916649
    Abstract: The present invention relates to a process of producing an ethylene polymer composition in multiple stages, of which the first stage is preferably a slurry polymerization stage, in the presence of a catalyst system, comprising: a) a solid catalyst precursor, comprising a transition metal selected from titanium and vanadium; magnesium; a halide, optionally an electron donor; and a solid particulate material comprising an inorganic oxide, and wherein the median particle diameter, D50, of the solid catalyst precursor, based upon the total volume of solid catalyst precursor, is from 1 to 13 micrometers; and b) an organoaluminium compound.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: December 23, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Patrick J. C. Schouterden, Ruddy A. J. Nicasy, Sarat Munjal, Robert J. Jorgesen, Burkhard E. Wagner