TREA

Helmut Kaufmann

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Patents Grantslast 30 patents

  • Information Patent Grant

    Ceramic refractory stopper
    • Patent number 9,802,249
    • Issue date Oct 31, 2017
    • Refractory Intellectual Property GmbH & Co. KG
    • Gerald Nitzl
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Ceramic refractory stopper
    • Patent number 9,302,321
    • Issue date Apr 5, 2016
    • REFRACTORY INTELLECTUAL PROPERTY GMBH & CO.
    • Gerald Nitzl
    • B22 - CASTING POWDER METALLURGY

Patents Applicationslast 30 patents

  • Information Patent Application

    CERAMIC REFRACTORY STOPPER
    • Publication number 20140232047
    • Publication date Aug 21, 2014
    • Gerald Nitzl
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Application

    CERAMIC REFRACTORY STOPPER
    • Publication number 20140217654
    • Publication date Aug 7, 2014
    • REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KG
    • Gerald Nitzl
    • B22 - CASTING POWDER METALLURGY