Patents by Inventor Viktor V. Digonsky

Viktor V. Digonsky 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 producing cubic boron nitride
    Patent number: 4349517
    Abstract: Disclosed is a method of producing cubic boron nitride, which comprises the steps of subjecting to a pressure of from 40 to 70 kilobars and to a temperature of from 1100.degree. to 2000.degree. C. a charge including hexagonal boron nitride and a conversion initiator selected from the group consisting of alkali and alkaline earth metals and borides of the foregoing metals, doping the charge with crystallohydrate in the form of a compound selected from the group consisting of sulfur-, halogen- or nitrogen-containing salts and their mixtures incorporating at least 5 molecules of crystallization water. According to another embodiment, the aforesaid charge is doped with a member selected from the group consisting of alkali metal hydroxide or alkaline earth metal hydroxide.
    Type: Grant
    Filed: October 21, 1980
    Date of Patent: September 14, 1982
    Inventors: Vladislav S. Lysanov, Viktor V. Digonsky, Leon I. Feldgun, Valery M. Davidenko, Nikolai V. Novikov, Alexandr I. Borimsky, Alexandr A. Shulzhenko, Valerian D. Yakimenko, Eduard Y. Dovgal, Vitaly Y. Egorov, Vyacheslav S. Rovsha, Alexei I. Prikhna, Alexandr N. Sokolov
  • Superhard composite material
    Patent number: 4186022
    Abstract: A superhard composite material comprises cubic boron nitride and a binder nsisting of carbide and diboride of a metal selected from the group IV-V of the periodic system, taken in eutectic ratio, the components being contained therein in the following amounts, in percent by weight:cubic boron nitride: 28 to 80carbide and diboride of a metal selected from the group IV-V of the periodic system, taken in eutectic ratio: 72 to 20The proposed material has high heat, and electrical conductivity, as well as high wear resistance and low brittleness.
    Type: Grant
    Filed: June 15, 1978
    Date of Patent: January 29, 1980
    Assignees: Vsesojuzny Nauchno-Issledovatelsky Institut Abrazivov I Shlifovania, Leningradsky Politekhn Ichesky Institut Imeni Lensoveta
    Inventors: Sergei S. Ordanian, Vladislav S. Lysanov, Viktor V. Digonsky, Vadim A. Blinkov, Ljubov A. Pekelis, Vera I. Denisova, Vladimir I. Unrod, Sergei V. Sinelnikov, Marina P. Chestnokova
  • Method of preparing polycrystalline cubic boron nitride
    Patent number: 4148863
    Abstract: According to the invention, a method of preparing polycrystalline cubic bn nitride resides in that hexagonal boron nitride is subjected to the action of pressure of 40-90 kbar and temperature of 1200.degree.-2400.degree. C. in the presence of a catalyst, namely, a zinc compound.The proposed method makes it possible to increase considerably wear resistance of polycrystalline cubic boron nitride used in tools for working hardened steels and alloys.
    Type: Grant
    Filed: June 28, 1978
    Date of Patent: April 10, 1979
    Assignee: Vsesojuzny Nauchni-Issledovatelsky Institut Abrazivov I Shlifovania
    Inventors: Vladimir I. Farafontov, Mirra I. Sokhor, Natalia G. Kushkova, Viktor V. Digonsky, Vladislav S. Lysanov