Patents by Inventor Federico Ghelfi

Federico Ghelfi 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).

  • Niobium-doped vanadium/phosphorus mixed oxide catalyst
    Patent number: 7638457
    Abstract: Disclosed is a process for the preparation of a modified vanadium/phosphorus mixed oxide catalyst for the partial oxidation of n-butane to maleic anhydride. The catalyst comprises vanadyl pyrophosphate as main component and niobium as a promoter element in an amount corresponding to an atomic ratio of vanadium to niobiurn in the range of 250:1 to 60:1. The catalyst exhibits improved activity, improved yield of maleic anhydride, and optimal performance from the very beginning of its catalytic lifetime.
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: December 29, 2009
    Assignee: Lonza S.p.A.
    Inventors: Federico Ghelfi, Gianluca Mazzoni, Carlo Fumagalli, Fabrizio Cavani, Francesca Pierelli
  • Niobium-doped vanadium/phosphorus mixed oxide catalyst
    Publication number: 20060173197
    Abstract: Disclosed is a process for the preparation of a modified vanadium/phosphorus mixed oxide catalyst for the partial oxidation of n-butane to maleic anhydride. The catalyst comprises vanadyl pyrophosphate as main component and niobium as a promoter element in an amount corresponding to an atomic ratio of vanadium to niobiurn in the range of 250:1 to 60:1. The catalyst exhibits improved activity, improved yield of maleic anhydride, and optimal performance from the very beginning of its catalytic lifetime.
    Type: Application
    Filed: September 15, 2004
    Publication date: August 3, 2006
    Inventors: Federico Ghelfi, Gianluca Mazzoni, Carlo Fumagalli, Fabrizio Cavani