Patents by Inventor Anatoli E. Andreev

Anatoli E. Andreev 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).

  • Manufacture of cost-effective titanium powder from magnesium reduced sponge
    Patent number: 6638336
    Abstract: The cost-effective titanium powder is manufactured by (a) magnesium-thermic reduction of titanium chlorides characterized by the formation of a hollow block of the reaction mass having an open cavity in the center of the block, (b) thermal-vacuum separation of the hollow block from excessive Mg and MgCl2 at 850-950° C. and residual pressure of 10−2-10−3 mm Hg, (c) cooling of obtained titanium hollow block in a H2-contained atmosphere at an excessive hydrogen pressure, (d) crushing the hydrogenated titanium block, (e) grinding the crushed titanium pieces into the powder combined with a hydro-metallurgical treatment of obtained titanium powder in a diluted aqueous solution of at least one chloride selected from magnesium chloride, sodium chloride, potassium chloride, or titanium chloride, and (f) drying and, optionally dehydrating the titanium powder ground to a predetermined particle size.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: October 28, 2003
    Inventors: Victor A. Drozdenko, Anatoli M. Petrunko, Anatoli E. Andreev, Oleksiy P. Yatsenko, Orest M. Ivasishin, Dmitro G. Savvakin, Vladimir S. Moxson, Francis H. Froes