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Volker Ketzer

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  • Essen, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Closure element for pipe ends
    • Patent number 9,341,297
    • Issue date May 17, 2016
    • Vallourec Deutschland GmbH
    • Gerald Schneider
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    CLOSURE ELEMENT FOR PIPE ENDS
    • Publication number 20150034197
    • Publication date Feb 5, 2015
    • VALLOUREC DEUTSCHLAND GMBH
    • Gerald Schneider
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Protective Device for the Covering of Flanges for Pipe Construction
    • Publication number 20120261024
    • Publication date Oct 18, 2012
    • Volker Ketzer
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...