Patents by Inventor Jury I. Nikitin

Jury I. Nikitin 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).

  • Diamond paste
    Patent number: 4249347
    Abstract: A diamond paste to be used for treating surfaces of workpieces comprising diamond powder in a mechanical mixture with surface-active and lubricating (cooling) components.
    Type: Grant
    Filed: September 18, 1979
    Date of Patent: February 10, 1981
    Inventors: Svetlana T. Bura, Jury I. Nikitin
  • Polycrystalline superhard material and method of producing thereof
    Patent number: 4220677
    Abstract: The proposed polycrystalline superhard material comprises sintered particles of cubic boron nitride coated over the whole surface thereof with a layer of a crystalline compound of the chemical formula B.sub.x N.sub.y C.sub.z, where x, y and z can assume any value from 0 to 1, said compound binding together the particles of the cubic boron nitride.According to the present invention the proposed material is produced in the following way: particles of cubic boron nitride are placed in a flow of a gas containing carbon for a carbon layer 1-100 A thick to be built up on the whole surface of said particles. Then the particles of cubic boron nitride with the carbon layer built up over the whole surface of the particles are subjected to sintering at a temperature and under a pressure corresponding to the region of thermodynamic stability of cubic boron nitride.The herein-proposed material is highly uniform and features mechanical properties superior to those of the known cubic boron nitride materials.
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: September 2, 1980
    Assignee: Institut Sverkhtverdykh Materialov Akademii Nauk Ukrainskoi SSR
    Inventors: Dmitry V. Fedoseev, Boris V. Deryagin, Valentin N. Bakul, Alexei I. Prikhna, Valentin K. Gerasimenko, Vladimir G. Poltoratsky, Jury I. Nikitin, Stanislav P. Vnukov, Valentin P. Varnin
  • Polycrystalline superhard material and method of producing thereof
    Patent number: 4148964
    Abstract: The proposed polycrystalline superhard material comprises sintered particles of cubic boron nitride coated over the whole surface thereof with a layer of a crystalline compound of the chemical formula B.sub.x N.sub.y C.sub.z, where x, y and z can assume any value from 0 to 1, said compound binding together the particles of the cubic boron nitride.According to the present invention the proposed material is produced in the following way: particles of cubic boron nitride are placed in a flow of a gas containing carbon for a carbon layer 1-100 A thick to be built up on the whole surface of said particles. Then the particles of cubic boron nitride with the carbon layer built up over the whole surface of the particles are subjected to sintering at a temperature and under a pressure corresponding to the region of thermodynamic stability of cubic boron nitride.The herein-proposed material is highly uniform and features mechanical properties superior to those of the known cubic boron nitride materials.
    Type: Grant
    Filed: January 21, 1977
    Date of Patent: April 10, 1979
    Inventors: Dmitry V. Fedoseev, Boris V. Deryagin, Valentin N. Bakul, Alexei I. Prikhna, Valentin K. Gerasimenko, Vladimir G. Poltoratsky, Jury I. Nikitin, Stanislav P. Vnukov, Valentin P. Varnin