Patents by Inventor Aldo Modenesi

Aldo Modenesi 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).

  • 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