Patents by Inventor Sergei P. Efimenko

Sergei P. Efimenko 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 of making billets
    Patent number: 4288907
    Abstract: A method of making billets, whereby a composite billet is produced by continuous casting or rolling, which billet is star-shaped in cross section and has at least two ray members disposed symmetrically relative to the central longitudinal axis of the composite billet; the base of each star ray member of the composite billet at the place of its juncture with the central portion thereof is selected to be 0.72 to 2.3 of the ray member height, the other base being 0.5 to 1.
    Type: Grant
    Filed: June 28, 1978
    Date of Patent: September 15, 1981
    Inventors: Julian M. Chumanov, Anatoly L. Liberman, Vladimir I. Listopad, Vasily V. Polyakov, Vyacheslav F. Gubaidulin, Grigory M. Shulgin, Dmitry P. Evteev, Sergei P. Efimenko, Veniamin V. Fulmakht, Vladimir P. Slednev, Viktor I. Pogorzhelsky, Valentin B. Shum, Anatoly A. Tolpa
  • Method of rolling section billets
    Patent number: 4204416
    Abstract: The invention relates to a method of rolling section billets in which billets interconnected by bridges are successively formed from a slab in a number of grooves defined by a plurality of transversely juxtaposed passes, with subsequent separation of billets from one another by effecting a relative displacement of adjacent billets by prevailingly acting with a groove on one of the sides of the adjacent billets at an angle other than 90.degree. to the roll axis when the bridge thickness becomes equal to 0.01-0.3 of the groove height.
    Type: Grant
    Filed: December 20, 1977
    Date of Patent: May 27, 1980
    Inventors: Julian M. Chumanov, Vyacheslav F. Gubaidulin, Grigory M. Shulgin, Viktor I. Pogorzhelsky, Vasily P. Morozov, Pavel A. Levichev, Jury P. Lyashenko, Anatoly G. Shalimov, Dmitry P. Evteev, Sergei P. Efimenko, Stanislav N. Ignatiev, Vladimir P. Slednev, Eduard V. Ovsy, Vladimir S. Solod, Valery V. Moiseenkov
  • Method of refining of metal
    Patent number: 4140522
    Abstract: A method for refining a quantity of metal by a correlated quantity of fluid slag comprising discharging the metal to be refined as a stream into a refining vessel and discharging the slag into the vessel in a stream which strikes the metal stream. The slag is discharged in an amount equal to 50% of the total slag content before the discharge of 20% of the metal is completed, the discharge of slag being halted while continuing the discharge of the metal until 50% of the metal has been discharged. The discharge of the remaining 50% of the slag content is resumed as a stream striking the metal stream during the time when the remaining 50% of the metal is discharged.
    Type: Grant
    Filed: January 16, 1975
    Date of Patent: February 20, 1979
    Inventors: Leonid I. Krupman, Alexandr E. Sochnev, Boris V. Gavronsky, Sergei P. Efimenko, Leonid M. Pokrass, Alexandr P. Voropaev, Vakhtang V. Mosiashvili, Valentin Y. Laschev, Abram M. Ofengenden