TREA

Kenta Matsubara

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Jointing construction
    • Patent number 6,305,873
    • Issue date Oct 23, 2001
    • Obayashi Corporation
    • Eiji Tauchi
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Segments
    • Patent number 6,076,995
    • Issue date Jun 20, 2000
    • Obayashi Corporation
    • Eiji Tauchi
    • E21 - EARTH DRILLING MINING