Patents by Inventor Franzo Marruffo

Franzo Marruffo 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).

  • Patent number: 5166118
    Abstract: A catalyst for the hydrogenation of a hydrocarbon material which is a member selected from the group consisting of red mud, iron oxides, iron ores, hard coals, lignites impregnated with heavy metal salts, carbon black, soots from gasifiers, and cokes produced by the hydrogenation of virgin residues, the catalyst being comprised of at least two separate particle size fractions such that the combined fractions have a particle size distribution between 0.1 and 2,000 microns with 10-40 wt. % of the particles having a particle size greater than 100 microns, and the mixture of fractions not being represented by a straight line when the accumulative weight of the particles vs. particle size which is plotted on log (minus log) vs. log graph paper has a correlation coefficient R.sup.2 less than 0.96 as determined from the equation: ##EQU1## wherein n is the number of experimental points, y is ln [-ln (n/1000)] and x is ln (dp), wherein dp is the particle size (.mu.m) of the particles.
    Type: Grant
    Filed: April 19, 1989
    Date of Patent: November 24, 1992
    Assignee: Veba Oel Technologie GmbH
    Inventors: Klaus Kretschmar, Ludwig Merz, Klaus Niemann, Jose Guitian, Julio Krasuk, Franzo Marruffo, Klaus Kurzeja
  • Patent number: 4851107
    Abstract: A process for the hydrogenation of heavy oils, residual oils, waste oils, used oils, shell oils, and tar sand oils by hydrogenating a slurry of the oil at a partial hydrogen pressure of 50-300 bar, a temperature of 250.degree.-500.degree. C., a space velocity of 0.1-5 T/m.sup.3 h, and a gas/liquid ratio of 100-10000 Nm.sup.3/ T, wherein the additive comprises two different grain size portions, a fine grain portion having a grain size of 90 microns or less and a coarse grain portion having a grain size of 100-1000 microns.
    Type: Grant
    Filed: October 7, 1987
    Date of Patent: July 25, 1989
    Assignees: Veba OEL Entwicklungs-Gesellschaft mbH, Intevep S. A.
    Inventors: Klaus Kretschmar, Ludwig Merz, Klaus Niemann, Jose Guitian, Julio Krasuk, Franzo Marruffo