Patents by Inventor Giovanni Soverini

Giovanni Soverini 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).

  • Patent number: 5320995
    Abstract: A catalyst for the polymerization of olefins, containing magnesium, chlorine, aluminium and at least one transition metal, in a dispersed or emulsified form within an inert diluent, is obtained by:contacting, in an inert diluent, a magnesium dialkyl and aluminium trichloride, in a molar ratio equal or almost equal to 2/1, at a temperature lower than 105.degree. C. to obtain a catalyst precursor in a suspended form, or at a temperature higher than 105.degree. C. to form a catalyst precursor in the form of a colloidal emulsion, in the diluent used; andcontacting said suspended or emulsified precursor with at least one compound of a transition metal to form a catalyst in the form of a suspension or emulsion respectively.
    Type: Grant
    Filed: October 5, 1992
    Date of Patent: June 14, 1994
    Assignee: ECP Enichem Polimeri S.r.l.
    Inventors: Luciano Luciani, Mario Polesello, Federico Milani, Renzo Invernizzi, Giovanni Soverini