TREA

Masahiro Nakata

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Rockbolts made of steel pipes
    • Patent number 7,927,043
    • Issue date Apr 19, 2011
    • Nisshin Steel Co., Ltd.
    • Tatsurou Iwasaki
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    Rockbolts made of steel pipes
    • Publication number 20070081864
    • Publication date Apr 12, 2007
    • Nisshin Steel Co.,LTD
    • Tatsurou Iwasaki
    • E21 - EARTH DRILLING MINING