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Gerhard Pietzka

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  • Vockenhausen, Ts., DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of producing an isotropic coke
    • Patent number 4,289,604
    • Issue date Sep 15, 1981
    • Bergwerksverband GmbH
    • Georg Kolling
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Method of continuously producing coke
    • Patent number 4,219,405
    • Issue date Aug 26, 1980
    • Sigri Elektrographit GmbH
    • Gerhard Pietzka
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Method for the manufacture of a coal-tar pitch coke
    • Patent number 4,137,150
    • Issue date Jan 30, 1979
    • Sigri Elektrographit GmbH
    • Gerhard Pietzka
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Method of producing pitch coke
    • Patent number 4,111,794
    • Issue date Sep 5, 1978
    • Sigri Elektrographit GmbH
    • Gerhard Pietzka
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...