Patents by Inventor Luigi Carvani

Luigi Carvani 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).

  • Multistage process for the direct liquefaction of coal
    Patent number: 4595488
    Abstract: Moisture- and ash-free coking coal is micronized and admixed with a recycle oil, whereafter it is rapidly hydrogenated and one portion of the residue of the fractional distillation of the hydrogenation product is sent to hydrotreating, together with hydrogen. Conventional catalysts can be used both for the hydrogenation and the hydrotreating.A gaseous fraction, consisting of water vapor, hydrogen sulphide, ammonia and C1-C4 hydrocarbon is obtained along with gasoline.Gasoil can be obtained together with gasoline.
    Type: Grant
    Filed: June 7, 1984
    Date of Patent: June 17, 1986
    Assignee: ENI-Ente Nazionale Idrocarburi
    Inventors: Giancarlo Pecci, Luigi Carvani, Domenico Valentini, Michele Zaninelli