Patents by Inventor Leonid V. Grischenko

Leonid V. Grischenko 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).

  • Ceramic flux for welding low-alloy steels
    Patent number: 4950331
    Abstract: A ceramic flux for welding low-alloy steels contains calcined magnesite, synthetic slag containing two thirds of CaF.sub.2 and one third of Al.sub.2 O.sub.3, a component containing at least 95% of Al.sub.2 O.sub.3 in the alpha form, wollastonite, marble, barium fluoride, ferrotitanium, ferroboron, sodium silicate.The ratio of the total content of calcined magnesite, two thirds of synthetic slag and one half of wollastonite to the total content of the component containing at least 95% of Al.sub.2 O.sub.3 in the alpha form, one third of synthetic slag, one half of woolastonite and two thirds of sodium silicate ranging from 1.30 to 1.43 and the ratio of titanium to boron ranging from 11.2 to 30.1.
    Type: Grant
    Filed: July 11, 1989
    Date of Patent: August 21, 1990
    Inventors: Igor K. Pokhodnya, Daniil M. Kushnerev, Sergei D. Ustinov, Oleg G. Sokolov, Leonid V. Grischenko, Gennady V. Baskakov, Marat V. Yamskoi, Andrei M. Zarubin, Viktor V. Golovko