TREA

Toshio Nagahisa

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  • Fuchu, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus for improving characteristics of sand
    • Patent number 4,832,853
    • Issue date May 23, 1989
    • Kitagawa Iron Works Co., Ltd.
    • Hisashi Shiraki
    • B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
  • Information Patent Grant

    Apparatus for improving characteristics of sand
    • Patent number 4,717,478
    • Issue date Jan 5, 1988
    • Kitagawa Iron Works Co., Ltd.
    • Hisashi Shiraki
    • B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...