Patents by Inventor Lev B. Kuznetsov

Lev B. Kuznetsov 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).

  • Method for quantitative analysis of chemical composition of inorganic material
    Patent number: 4365969
    Abstract: A method for quantitative analysis of the chemical composition of an inorganic material comprising extraction of the element being determined from a sample of the inorganic material into the gas phase by treating the sample with a reagent that forms, with the element being determined, a volatile halide that is quantitatively analyzed in the gas phase. The method of this invention enables the determination of a broad range of elements. It is possible to determine one, two and more elements in a single experiment. The method is highly sensitive. The lower limit of detection of elements is 10.sup.-5 to 10.sup.-7 %. The accuracy of determination of elements present in concentrations of 10.sup.-5 to 10.sup.-6 % ranges from 15 to 30%.
    Type: Grant
    Filed: January 5, 1981
    Date of Patent: December 28, 1982
    Inventors: Jury A. Karpov, Boris P. Burylev, German G. Glavin, Valeria E. Kvin, Vasily V. Kovalev, Konstantin J. Natanson, Vladimir V. Orlov, Lev B. Kuznetsov, Anatoly M. Zaitsev, Valentin E. Kartsev, Vladimir M. Morozov, Gennady G. Kovalev
  • Method for the determination of hydrogen content in inorganic materials
    Patent number: 4329868
    Abstract: A sample of an inorganic material is placed into a hermetically sealed electrode pulse furnace and heating and melting of the sample are effected at a temperature within the range of from 1,600.degree. to 2,500.degree. C. Delivering of the hydrogen evolved upon melting from the unsealed furnace to the site of its quantitative recording is effected by means of an inert gas at a temperature of from 1,600.degree. to 2,500.degree. C., which makes it possible to determine the content of hydrogen with an accuracy of 2.times.10.sup.-3 % by mass in inorganic materials, for example slags, within a period of from 5 to 10 minutes.
    Type: Grant
    Filed: January 18, 1980
    Date of Patent: May 18, 1982
    Inventors: Lev B. Kuznetsov, Valentin V. Strelkov, Anatoly V. Zaitsev, Igor A. Lvov, Valentina P. Romanova
  • Antifriction bearing, method of making same and antifriction material for performing this method
    Patent number: 4223963
    Abstract: The unoccupied space intermediate the races, the rolling bodies and the metal cage of a conventional antifriction bearing is filled with a solidified antifriction compound, with the cage of the conventional bearing being fast with the compound and reinforcing it. An annular gap is provided intermediate the outer race of the bearing and the solidified compound body for removal of the wear products. To manufacture a bearing of this kind, a bearing of the conventional kind is filled with a solidifiable antifriction material, with subsequent thermal treatment. The invention offers a simple, readily implementable and relatively inexpensive technique of adding a new quality to conventional antifriction bearings, viz. the ability of prolonged operation under adverse conditions, without periodic lubrication.
    Type: Grant
    Filed: July 27, 1978
    Date of Patent: September 23, 1980
    Inventors: Jury N. Glodin, Albert G. Eliseenko, Petr A. Pshenichkin, Evgeny A. Smirnov, Nikolai N. Khavsky, Lev B. Kuznetsov