Patents by Inventor Aleksandr I. Cheprasov

Aleksandr I. Cheprasov 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).

  • Semi-continuous magnesium-hydrogen reduction process for manufacturing of hydrogenated, purified titanium powder
    Patent number: 8007562
    Abstract: The cost-effective hydrogenated, purified titanium powder is manufactured by the semi-continuous process including: (a) magnesium-thermic reduction of titanium chlorides at 830-880° C. in the hydrogen atmosphere characterized by the formation of a hollow porous block of the reaction mass having an open cavity in the center of the block, (b) full thermal-vacuum separation of the hollow block from excessive Mg and MgCl2 at 850-980° C. and residual pressure of 26-266 Pa using a multi-step cycle including: (i) purging hydrogen at 800-950° C. into the reactor at the pressure 10 kPa to 24.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: August 30, 2011
    Assignee: ADMA Products, Inc.
    Inventors: Sergey A. Kasparov, Andrey G. Klevtsov, Aleksandr I. Cheprasov, Vladimir S. Moxson, Volodymyr A. Duz
  • Semi-continuous magnesium-hydrogen reduction process for manufacturing of hydrogenated, purified titanium powder
    Publication number: 20100166643
    Abstract: The cost-effective hydrogenated, purified titanium powder is manufactured by the semi-continuous process including: (a) magnesium-thermic reduction of titanium chlorides at 830-880° C. in the hydrogen atmosphere characterized by the formation of a hollow porous block of the reaction mass having an open cavity in the center of the block, (b) full thermal-vacuum separation of the hollow block from excessive Mg and MgCl2 at 850-980° C. and residual pressure of 26-266 Pa using a multi-step cycle including: (i) purging hydrogen at 800-950° C. into the reactor at the pressure 10 kPa to 24.
    Type: Application
    Filed: December 29, 2008
    Publication date: July 1, 2010
    Inventors: Sergey A. Kasparov, Andrey G. Klevtsov, Aleksandr I Cheprasov, Vladimir S. Moxson, Volodymyr A. Duz