TREA

Volkmar Berg

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  • Graben, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Drainage concrete
    • Patent number 5,861,057
    • Issue date Jan 19, 1999
    • Hoechst Aktiengesellschaft
    • Volkmar Berg
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Concrete molding with improved acid resistance
    • Patent number 5,691,050
    • Issue date Nov 25, 1997
    • Hoechst Aktiengesellschaft
    • Volkmar Berg
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Concrete molding with improved acid resistance
    • Patent number 5,599,597
    • Issue date Feb 4, 1997
    • Hoechst Aktiengesellschaft
    • Volkmar Berg
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Concrete roof tile
    • Patent number 5,047,295
    • Issue date Sep 10, 1991
    • BASF Aktiengesellschaft
    • Bernhard Dotzauer
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES