Patents by Inventor A. F. Vildanov

A. F. Vildanov 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).

  • Catalyst for demercaptanization of petroleum distillates
    Patent number: 5849656
    Abstract: The demercaptanization of petroleum distillates may be carried out by means of the oxidation of the mercaptans contained therein using the oxygen in the air, at a temperature of about 80.degree. to about 220.degree. C., in the presence of about 0.01 to about 10.0 mass % of a water-soluble salt of copper, iron, nickel, or cobalt, on a fibrous carbonaceous material in the form of a woven fabric, felt, rope, or twisted strand, used as a heterogeneous catalyst. The fibrous carbonaceous material used in the process contains oxides of calcium, magnesium, copper, manganese, iron, zinc, and aluminum in an amount of up to about 0.03 mass %.
    Type: Grant
    Filed: March 13, 1997
    Date of Patent: December 15, 1998
    Assignee: Chevron U.S.A. Inc.
    Inventors: A. M. Mazgarov, A. F. Vildanov, N. G. Bazhirova
  • Method for the demercaptanization of petroleum distillates
    Patent number: 5741415
    Abstract: The demercaptanization of petroleum distillates may be carried out by means of the oxidation of the mercaptans contained therein using the oxygen in the air, at a temperature of about 80.degree. to about 220.degree. C., in the presence of about 0.01 to about 10.0 mass % of a water-soluble salt of copper, iron, nickel, or cobalt, on a fibrous carbonaceous material in the form of a woven fabric, felt, rope, or twisted strand, used as a heterogeneous catalyst. The fibrous carbonaceous material used in the process contains oxides of calcium, magnesium, copper, manganese, iron, zinc, and aluminum in an amount of up to about 0.03 mass %.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: April 21, 1998
    Assignee: Chevron U.S.A. Inc.
    Inventors: A. M. Mazgarov, A. F. Vildanov, N. G. Bazhirova