Patents by Inventor Olga S. Bobkova

Olga S. Bobkova 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).

  • Patent number: 4256487
    Abstract: A process for producing vanadium-containing alloys comprises the step of melting in a furnace a charge providing a content of vanadium oxides in a melt from 25 to 30 wt. % of vanadium oxides, and calcium oxides. The melt is discharged from the furnace into a receptacle in which vanadium is reduced from oxides thereof with liquid or solid silicon-containing reducing agent. Then vanadium oxides and calcium oxides are additionally introduced to oxides the residual silicon, or from 1 to 10 wt. % of vanadium oxides remain in the slag, and vanadium is reduced from these oxides in another receptacle. The process permits to reduce the production cost of the alloy, increase the vanadium content in the alloy to 80 wt. % and lower the carbon content to 0.03 wt. % and less.
    Type: Grant
    Filed: October 3, 1978
    Date of Patent: March 17, 1981
    Inventors: Olga S. Bobkova, Nikolai P. Slotvinsky-Sidak, Oleg V. Travin, Averky A. Frolov