Patents by Inventor Lev Borisovich Medovar

Lev Borisovich Medovar 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).

  • Patent number: 6368375
    Abstract: In a method and apparatus for the electroslag refining of metal, the method includes providing a refining vessel to contain an electroslag refining layer floating on a layer of molten refined metal. The refining vessel representing an upper part of a cooled mould comprises a plurality of superimposed sleeves which are electrically insulated from one another. The top sleeve, being the refining vessel, is substantially a non-consumable electrode and has a current lead electrically insulated from the sleeve. The molten electroslag layer is heated by a refining current which is passed from a power source through the mould and slag layer to the metal pool. An unrefined metal is lowered into the vessel into contact with the molten electroslag layer such that its surface is melted and overheated at the point of contact with the slag such that droplets of the metal are formed and these droplets pass down through the slag and are collected in a pool of molten refined metal beneath the slag.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: April 9, 2002
    Assignee: General Electric Company
    Inventors: Mark Gilbert Benz, William Thomas Carter, Jr., Bruce Alan Knudsen, Robert John Zabala, Paul Leonard Dupree, Boris Izrailevich Medovar, Lev Borisovich Medovar