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Ralf Birkelbach

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  • Bad Laasphe, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Self-tapping screw
    • Patent number 11,754,110
    • Issue date Sep 12, 2023
    • EJOT GMBH & CO. KG
    • Michael Achenbach
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Self-tapping screw
    • Patent number 7,021,877
    • Issue date Apr 4, 2006
    • EJOT GmbH & Co. KG
    • Ralf Birkelbach
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Self-threading screw with straight load flank and angled rear flank...
    • Patent number 6,722,833
    • Issue date Apr 20, 2004
    • EJOT Verbindungstechnik GmbH & Co. KG
    • Ralf Birkelbach
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Self-drilling and thread-forming screw having a flow-forming section
    • Patent number 5,882,161
    • Issue date Mar 16, 1999
    • EJOT Verbindungstechnik GmbH & Co.
    • Ralf Birkelbach
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    SCREW FOR SCREWING INTO PLASTIC
    • Publication number 20210364030
    • Publication date Nov 25, 2021
    • EJOT GMBH & CO. KG
    • MICHAEL ACHENBACH
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    SELF-TAPPING SCREW
    • Publication number 20210115959
    • Publication date Apr 22, 2021
    • EJOT GMBH & CO. KG
    • MICHAEL ACHENBACH
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Device for securing a structural element to a panel-like component
    • Publication number 20050008456
    • Publication date Jan 13, 2005
    • EJOT GmbH & Co. KG
    • Ralf Birkelbach
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Self-tapping screw
    • Publication number 20040081535
    • Publication date Apr 29, 2004
    • EJOT GmbH & Co. KG
    • Ralf Birkelbach
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Self-threading screw
    • Publication number 20020136616
    • Publication date Sep 26, 2002
    • Ralf Birkelbach
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...