TREA

Masao Kanazawa

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Coupling for drainage pipings
    • Patent number 5,752,548
    • Issue date May 19, 1998
    • Benkan Corporation
    • Shigeyuki Matsumoto
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Pipe joint
    • Patent number 5,722,695
    • Issue date Mar 3, 1998
    • Kenkan Corporation
    • Shigeyuki Matsumoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pipe joint
    • Patent number 5,658,021
    • Issue date Aug 19, 1997
    • Benkan Corporation
    • Shigeyuki Matsumoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...