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Wieland Neumann

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  • Monchengladbach, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sealing device for pipes
    • Patent number 6,089,618
    • Issue date Jul 18, 2000
    • Forsheda AB
    • Wieland Neumann
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Sealing device
    • Patent number 5,826,887
    • Issue date Oct 27, 1998
    • Forsheda AB
    • Wieland Neumann
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Seal between two elements, especially between concrete pipes
    • Patent number 5,599,028
    • Issue date Feb 4, 1997
    • Forsheda AB
    • Wieland Neumann
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Sealing device with c-shaped lips and central projection
    • Patent number 5,507,504
    • Issue date Apr 16, 1996
    • Forsheda AB
    • Wieland Neumann
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...