TREA

Kimitoshi Ryokai

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Fiber grid reinforcement
    • Patent number 4,990,390
    • Issue date Feb 5, 1991
    • Shimizu Construction Co., Ltd.
    • Hirotaka Kawasaki
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Method and apparatus for measuring water content
    • Patent number 4,886,088
    • Issue date Dec 12, 1989
    • Shimizu Construction Co., Ltd.
    • Kimitoshi Ryokai
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING