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Leonid Isaakovich Krupman

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  • Donetsk, SU
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Patents Grantslast 30 patents

  • Information Patent Grant

    Exothermic slag-forming mixture
    • Patent number 4,177,070
    • Issue date Dec 4, 1979
    • Leonid I. Krupman
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Method of refining of metal
    • Patent number 4,140,522
    • Issue date Feb 20, 1979
    • Leonid I. Krupman
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Slag-forming mixture
    • Patent number 3,964,900
    • Issue date Jun 22, 1976
    • Leonid Isaakovich Krupman
    • C21 - METALLURGY OF IRON