Patents by Inventor Gian Paolo Ravanetti

Gian Paolo Ravanetti 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).

  • Chlorinated promoters for vanadium-based polymerization catalysts
    Patent number: 7514386
    Abstract: Promoters are described for vanadium-based catalysts used in the (co)polymerization of olefins and, in particular, in the production of ethylene/propylene (EPR) or ethylene/propylene/diene (EPDM) elastomeric copolymers. The promoters of the present invention belong to the group of compounds having general formula I: wherein: “X” represents a (—CO—) carbonyl or (—SO2—) sulfonyl group; “n” is 0 or 1; R? is an alkyl or alkylaryl group having from 1 to 20 carbon atoms; R?=R?, H.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: April 7, 2009
    Assignee: Polimeri Europa S.p.A.
    Inventors: Stefanio Bonsignore, Marco Ricci, Antonio Alfonso Proto, Maria Rivellini, legal representative, Laura Santi, legal representative, Stefano Santi, legal representative, Gian Paolo Ravanetti, Andrea Vallieri, Roberto Santi