Patents by Inventor Boris N. Putimtsev

Boris N. Putimtsev 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).

  • Ferromagnetic abrasive material and method for preparing the same
    Patent number: 4187084
    Abstract: A ferromagnetic abrasive material containing a ferromagnetic component including an iron-aluminum-silicon-phosphorus-carbon alloy and an abrasive component including aluminum and silicon oxides, carbides, nitrides and phosphides, the ingredients being used in the following proportions (in % by weight):______________________________________ iron 75-97 aluminum 0.2-16.0 silicon 0.2-18.0 phosphorus 0.005-1.5 carbon 0.005-4.0 oxygen 0.05-3.0 nitrogen 0.01-0.5 including oxides, carbides, nitrides and phosphides 0.01-5.0. ______________________________________A method for preparing said ferromagnetic abrasive material comprises melting an iron-aluminum-silicon-phosphorus alloy, adding carbon to the resultant melt and subsequently overheating the melt containing iron, aluminum, silicon, phosphorus, carbon above the temperature corresponding to the beginning of solidification by 50.degree.-200.degree. C. Then a jet of the melt Fe--Al--Si--P--C is atomized to obtain pellets of a size smaller than 1.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: February 5, 1980
    Inventors: Nikolai S. Khomich, Faddei J. Sakulevich, Boris N. Putimtsev, Vladimir A. Silaev