Patents by Inventor Dmitry Vladimirovich ZHIGALOV

Dmitry Vladimirovich ZHIGALOV 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 producing non-core beta silicon carbide fibers
    Patent number: 11959192
    Abstract: The method for producing non-core beta silicon carbide fibers includes four steps. The first step is spinning of multifilament polymeric fiber by melt-extrusion of polycarbosilane. The second step is thermooxidative cross-linking for which the produced spun polymeric fibers are cured in an oxidation furnace at a temperature of 175-250 degrees C. at a heating rate of 3-10 degrees C./h until their weight is increased by 6-15%. The third step is carbonization of the produced cured polymeric fibers with the conversion into the ceramic phase. The fourth step is finishing of the produced beta silicon carbide fiber. The effect of the invention is producing non-core silicon carbide fibers, improving their strength performance, improving resistance to high temperatures and their high creep resistance, stable fiber properties, optimal average diameter of fibers, absence of foreign impurities in the fiber composition.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: April 16, 2024
    Assignee: BOCHVAR HIGH-TECH. RES. INST. FOR INORG. MATERIALS
    Inventors: Leonid Aleksandrovich Karpyuk, Vladislav Konstantinovich Orlov, Sergey Igorevich Ivanov, Alexey Vladimirovich Glebov, Fyodor Viktorovich Makarov, Roman Gennadyevich Zakharov, Ivan Alexandrovich Dzyubinsky, Alexander Pavlovich Ponomarenko, Dmitry Vladimirovich Zhigalov, Alexander Pavlovich Korolev, Artem Andreevich Vorobyov
  • METHOD FOR PRODUCING NON-CORE BETA SILICON CARBIDE FIBERS
    Publication number: 20230026460
    Abstract: The method for producing non-core beta silicon carbide fibers includes four steps. The first step is spinning of multifilament polymeric fiber by melt-extrusion of polycarbosilane. The second step is thermooxidative cross-linking for which the produced spun polymeric fibers are cured in an oxidation furnace at a temperature of 175-250 degrees C. at a heating rate of 3-10 degrees C./h until their weight is increased by 6-15%. The third step is carbonization of the produced cured polymeric fibers with the conversion into the ceramic phase. The fourth step is finishing of the produced beta silicon carbide fiber. The effect of the invention is producing non-core silicon carbide fibers, improving their strength performance, improving resistance to high temperatures and their high creep resistance, stable fiber properties, optimal average diameter of fibers, absence of foreign impurities in the fiber composition.
    Type: Application
    Filed: December 29, 2020
    Publication date: January 26, 2023
    Inventors: Leonid Aleksandrovich KARPYUK, Vladislav Konstantinovich ORLOV, Sergey Igorevich IVANOV, Alexey Vladimirovich GLEBOV, Fyodor Viktorovich MAKAROV, Roman Gennadyevich ZAKHAROV, Ivan Alexandrovich DZYUBINSKY, Alexander Pavlovich PONOMARENKO, Dmitry Vladimirovich ZHIGALOV, Alexander Pavlovich KOROLEV, Artem Andreevich VOROBYOV