Patents by Inventor Sergio Leoncini

Sergio Leoncini 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).

  • Fluid bed catalytic cracking process characterized by a high selectivity to olefins
    Patent number: 6139721
    Abstract: The invention relates to a fluid catalytic cracking process for the preparation of good quality hydrocarbon fractions with a high octane number starting from heavy hydrocarbon fractions of a poorer quality characterized in that the heavy hydrocarbon fraction is put in contact, under cracking conditions, with a catalytic composition comprising a conventional FCC catalyst and a quantity of between 3-60% of a hydrothermally stable microporous material containing titanium.
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: October 31, 2000
    Assignee: Agip Petroli S.p.A.
    Inventors: Franco Baldiraghi, Paolo Ferrarini, Giovanni Faraci, Mario Lorenzo Occelli, Sergio Leoncini
  • Spent oil recovery process
    Patent number: 4406778
    Abstract: A process for reclaiming spent oil comprises the steps of removing water and light hydrocarbons, thermally treating the stripped oil, extracting it with a supercritical gas to insolubilize impurities and additives, separating the gas-rich fractions from the oil-depleted gas fractions, expanding the insoluble fractions, separating the additives and impurities, separating the various hydrocarbon fractions according to the respective viscosities, compressing and recycling the gas phases and withdrawing the residue and the oil fractions according to the respective viscosities.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: September 27, 1983
    Assignee: Snamprogetti S.p.A.
    Inventors: Michele Borza, Sergio Leoncini, Aldo Modenesi