Patents by Inventor Leonid F. Vereschagin

Leonid F. Vereschagin 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).

  • Device for building-up high pressure
    Patent number: 4290741
    Abstract: A device for building-up high pressures, in which the die surfaces facing each other are provided with circular grooves intended to be filled with a solid medium and arranged concentrically to, and beyond, the central sections of the dies. On closing of the dies, these circular grooves form spaces filled with the solid medium.
    Type: Grant
    Filed: March 14, 1979
    Date of Patent: September 22, 1981
    Inventors: Anatoly V. Kolchin, Vladimir I. Veprintsev, Lev I. Klyachko, Alexandr S. Novgorodov, Vladimir M. Zubkov, Leonid F. Vereschagin, Lev G. Khvostantsev, Albert P. Novikov, Sergei I. Yanshin, Klavdia M. Yanshina, Elena S. Yanshina, Ivan S. Yanshin, Zinaida P. Yanshina, administrators
  • Microcrystalline monolithic carbon material
    Patent number: 4196181
    Abstract: A material consisting of grains varying in size from 0.1 to a few microns intergrown so as to form regular aggregates. The geometric shape of the material is preset by a pattern made from a carbon-bearing non-diamond material and corresponds to the shape of the required finished article. The material can be made in any desired number of identical shapes.
    Type: Grant
    Filed: June 26, 1978
    Date of Patent: April 1, 1980
    Inventors: Leonid F. Vereschagin, Evgeny N. Yakovlev, Vladislav N. Slesarev, Vasily A. Stepanov, Alexandr Y. Preobrazhensky, Tatyana D. Varfolomeeva, Ljudmila E. Shterenberg
  • Compact-grained diamond material
    Patent number: 4142869
    Abstract: The proposed compact-grained diamond material consisting of powdered diamond particles is characterized in that the diamond particles therein are coated with a titanium carbide or zirconium carbide film, which film forms a cellular structure over the entire body of the material, and are bound with copper-titanium intermetallides filling the spacing between said diamond particles.
    Type: Grant
    Filed: March 22, 1977
    Date of Patent: March 6, 1979
    Inventors: Leonid F. Vereschagin, Aik A. Semerchan, Tamara T. Gankevich, Mikhail E. Dmitriev, Vitaly P. Modenov
  • Cubic boron nitride in a binder and method for its production
    Patent number: 4138252
    Abstract: The invention relates to a compact containing crystals of cubic boron nitride and a binder containing at least one of the intermetallic compounds selected from the group consisting of Ti.sub.2 Cu, Ti, Cu, Ti.sub.2 Cu.sub.3, TiCu.sub.3, Zr.sub.2 Cu, ZrCu, Zr.sub.2 Cu.sub.3, and ZrCu.sub.3. A method for the production of this compact comprises the steps of forming a composition including crystals of cubic boron nitride and a binder containing at least one of the intermetallic compounds selected from the group consisting of Ti.sub.2 Cu, TiCu, Ti.sub.2 Cu.sub.3, TiCu.sub.3, Zr.sub.2 Cu, ZrCu, Zr.sub.2 Cu.sub.3, and ZrCu.sub.3, and subjecting the obtained composition of cubic boron nitride and the binder to a pressure within the range of 10 to 50 kilobars and a temperature within the range of 1,000.degree. C. to 1,400.degree. C. The advantage of the present invention consists in providing a simple method for the production of the compact which possesses retained strength and cutting properties.
    Type: Grant
    Filed: June 10, 1977
    Date of Patent: February 6, 1979
    Inventors: Leonid F. Vereschagin, Aik A. Semerchian, Tamara T. Gankevich, Mikhail E. Dmitriev, Vitaly P. Modenov