TREA

Shoji Hirao

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  • Osaka-shi, JP
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Patents Applicationslast 30 patents

  • Information Patent Application

    Composite pressure pipe
    • Publication number 20050139280
    • Publication date Jun 30, 2005
    • Hiroyuki Masui
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Underdrainage pipe
    • Publication number 20050005985
    • Publication date Jan 13, 2005
    • Hiroyuki Masui
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING