Patents by Inventor Dimitri P. Klevtsov

Dimitri P. Klevtsov 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).

  • Desulfurization of sulfur compound-containing gases with vanadium catalysts
    Patent number: 5604173
    Abstract: Particular mixed vanadium/other metal catalysts, well suited for the desulfurization of gaseous effluents containing contaminating amounts of objectionable sulfur compounds, typically via the Claus reaction and notably in the presence of oxygen, comprise a support substrate, e.g., titanium dioxide, having an active catalytic phase deposited thereon, such active catalytic phase being constituted of an electroneutral solid solution having the average composition:A.sub.4.+-.y V.sub.2.+-.x O.sub.9in which A is a metal other than vanadium, e.g., magnesium, calcium or zinc, 0.ltoreq.x.ltoreq.0.2 and 0.ltoreq.y.ltoreq.0.5.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: February 18, 1997
    Assignees: Institut De Catalyse Du Department Siberien De L'Academie Des Sciences De Russie, Vniigaz
    Inventors: Roman A. Bouyanov, Albert M. Tsyboulesky, Boris P. Zolotovsky, Dimitri P. Klevtsov, Vladimir L. Mourine
  • Vanadium catalysts and desulfurization of sulfur compound-containing gases therewith
    Patent number: 5512258
    Abstract: The desulfurization of gaseous effluents containing contaminating amounts of objectionable sulfur compounds, typically via the Claus reaction and notably in the presence of oxygen, utilizing a support substrate, e.g., titanium dioxide, having an active catalytic phase deposited thereon, such active catalytic phase being constituted of an electroneutral solid solution having the average composition:A.sub.4.+-.y V.sub.2.+-.x O.sub.9in which A is a metal other than vanadium, e.g., magnesium, calcium or zinc, 0.ltoreq.x.ltoreq.0.2 and 0.ltoreq.y.ltoreq.0.5.
    Type: Grant
    Filed: August 16, 1994
    Date of Patent: April 30, 1996
    Assignee: Institut De Catalyse Du Departement Siberien De L'Academie Des Sciences De Russie and Vniigaz
    Inventors: Roman A. Bouyanov, Albert M. Tsyboulesky, Dimitri P. Klevtsov, Vladimir I. Mourine
  • Vanadium catalysts and desulfurization of sulfur compound-containing gases therewith
    Patent number: 5369076
    Abstract: Particular mixed vanadium/other metal catalysts, well suited for the desulfurization of gaseous effluents containing contaminating amounts of objectionable sulfur compounds, typically via the Claus reaction and notably in the presence of oxygen, comprise a support substrate, e.g., titanium dioxide, having an active catalytic phase deposited thereon, such active catalytic phase being constituted of an electroneutral solid solution having the average composition:A.sub.4.+-.y V.sub.2.+-.x O.sub.9in which A is a metal other than vanadium, e.g., magnesium, calcium or zinc, 0.ltoreq.x.ltoreq.0.2 and 0.ltoreq.y.ltoreq.0.5.
    Type: Grant
    Filed: June 17, 1992
    Date of Patent: November 29, 1994
    Assignee: Institut de Catalyse du Department Siberien de l'Academie des Sciences de Russie and Vniigaz (Institut de recherches de gas naturels)
    Inventors: Roman A. Bouyanov, Albert M. Tsyboulesky, Boris P. Zolotovsky, Dimitri P. Klevtsov, Vladimir I. Mourine