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Hiroichi Kawasaki

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Patents Grantslast 30 patents

  • Information Patent Grant

    Sludge thickening method
    • Patent number 7,906,029
    • Issue date Mar 15, 2011
    • ISHIGAKI Company Limited
    • Kenzou Sugaya
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Sludge thickening device
    • Patent number 7,828,961
    • Issue date Nov 9, 2010
    • ISHIGAKI Company Limited
    • Kenzou Sugaya
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Filter cloth suspending apparatus in filter press
    • Patent number 5,741,418
    • Issue date Apr 21, 1998
    • Ishigaki Company Limited
    • Akitoshi Iwatani
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Filter press with cake removing device
    • Patent number 5,167,801
    • Issue date Dec 1, 1992
    • Ishigaki Mechanical Industry Co., Ltd.
    • Hiroichi Kawasaki
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents