Patents by Inventor Didier Grandfils

Didier Grandfils 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).

  • Asymmetric ethylene-bridged metallocenes useful as catalysts in the polymerization of olefins and process for preparing said metallocenes
    Patent number: 6100416
    Abstract: Novel asymmetric ethylene-bridged metallocenes useful as catalysts in the polymerization of olefins and process for preparing said metallocenes.The novel metallocenes are represented by the general formula: ##STR1## wherein M represents a transition metal selected from titanium, zirconium and hafnium and X and X' represent a halogen atom. Preferably, the transition metal is Zr and the halogen atoms are both chlorine.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: August 8, 2000
    Assignee: Solvay Polyolefins Europe-Belgium (Societe Anonyme)
    Inventors: Marvin D. Rausch, Emma J. Thomas, Serge Bettonville, Didier Grandfils