Patents by Inventor Igor B. Tverdokhleb

Igor B. Tverdokhleb 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).

  • Multistage submersible axial-flow pump
    Publication number: 20040096320
    Abstract: The multistage submersible axial-flow pump may be successfully used, in particular, in systems of water intake, in oil and gas producing branches of industry, in mining, etc., with the purpose to lift stratal liquids and gas-liquid mixtures with increased gas content from boreholes.
    Type: Application
    Filed: June 26, 2003
    Publication date: May 20, 2004
    Inventors: Anatoliy A. Yevtushenko, Oleksandr V. Yelin, Nikolay N. Lilak, Igor B. Tverdokhleb