TREA

Tomeyoshi Ozawa

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus for sewage purification
    • Patent number 4,306,969
    • Issue date Dec 22, 1981
    • Industrial Research Institute
    • Takaai Tamura
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Apparatus for enriching oxygen contained in water
    • Patent number 4,219,424
    • Issue date Aug 26, 1980
    • Industrial Research Institute
    • Takaaki Tamura
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE