TREA

Naoki SEKIYAMA

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Tunnel excavation device
    • Patent number 12,173,607
    • Issue date Dec 24, 2024
    • Komatsu Ltd.
    • Naoki Sekiyama
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Tunnel excavation device
    • Patent number 12,173,608
    • Issue date Dec 24, 2024
    • Komatsu Ltd.
    • Naoki Sekiyama
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    TUNNEL EXCAVATION DEVICE
    • Publication number 20240200448
    • Publication date Jun 20, 2024
    • Komatsu Ltd.
    • Naoki SEKIYAMA
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    TUNNEL EXCAVATION DEVICE
    • Publication number 20240200449
    • Publication date Jun 20, 2024
    • Komatsu Ltd.
    • Naoki SEKIYAMA
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    TUNNEL EXCAVATION DEVICE
    • Publication number 20240200450
    • Publication date Jun 20, 2024
    • Komatsu Ltd.
    • Naoki SEKIYAMA
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    TUNNEL EXCAVATION DEVICE
    • Publication number 20230212948
    • Publication date Jul 6, 2023
    • Komatsu Ltd.
    • Naoki SEKIYAMA
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    TUNNEL EXCAVATION DEVICE
    • Publication number 20230203949
    • Publication date Jun 29, 2023
    • Komatsu Ltd.
    • Masahiro SUWANO
    • E21 - EARTH DRILLING MINING