TREA

Masao Suda

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  • Tsuchira, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vibration generating apparatus
    • Patent number 4,653,594
    • Issue date Mar 31, 1987
    • Nippon Telegraph & Telephone Public Corporation
    • Hiroshi Yamamoto
    • B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
  • Information Patent Grant

    Pipe laying apparatus
    • Patent number 4,576,515
    • Issue date Mar 18, 1986
    • Nippon Telegraph and Telephone Public Corp.
    • Keiji Morimoto
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Pipe laying apparatus
    • Patent number 4,571,122
    • Issue date Feb 18, 1986
    • Nippon Telegraph and Telephone Public Corp.
    • Hiroshi Yamamoto
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method and system for controlling earth pressure in tunnel boring o...
    • Patent number 4,167,289
    • Issue date Sep 11, 1979
    • Hitachi Construction Machinery Co., Ltd.
    • Kozo Ono
    • E21 - EARTH DRILLING MINING