Patents by Inventor Dmitry N. Cherebedov

Dmitry N. Cherebedov 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 removing deposits from the inside walls of a pipeline and applying protective coatings thereto
    Patent number: 4818298
    Abstract: A method of removing deposits from the inside surface of a pipeline and applying a protective coating thereto includes cleaning the pipeline inside surface and treating this surface with a solution of corrosion inhibitor to form a coating on the pipeline inside surface followed by a subsequent treatment with a solution of corrosion inhibitor to maintain the strength of the coating thus applied. The method provides for cleaning of the inside surface by jets of liquid which produce a pressure differential between the core of deposits and their surface to separate the deposits from the pipeline walls, while simultaneously impregnating the remaining layer of deposits with a solution of corrosion-promoting agent and subsequently impregnating the layer with a solution of corrosion inhibitor to form a coating.
    Type: Grant
    Filed: April 9, 1987
    Date of Patent: April 4, 1989
    Assignee: Trest "Juzhvodoprovod"
    Inventors: Viktor V. Shishkin, Dmitry N. Cherebedov, Nikolai F. Kryazhevskikh, Valery P. Panchenko, Yaroslav P. Sushkov, Evgeny G. Lukin, Petr G. Sokol, Alexandr I. Chernyai, Viktoria I. Kapralova, Lidia S. Sulekova