TREA

William H. Roche

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  • Mequon, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Diffuser conduit joint
    • Patent number 5,714,062
    • Issue date Feb 3, 1998
    • Water Pollution Control Corporation
    • William W. Winkler
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Sewage aeration system
    • Patent number 4,288,394
    • Issue date Sep 8, 1981
    • Water Pollution Control Corp.
    • Lloyd Ewing
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Diffusion element with boundary zone treatment
    • Patent number 4,288,395
    • Issue date Sep 8, 1981
    • Water Pollution Control Corporation
    • Lloyd Ewing
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Diffusion element with boundary zone treatment
    • Patent number 4,261,932
    • Issue date Apr 14, 1981
    • Water Pollution Control Corporation
    • Lloyd Ewing
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES