TREA

Naotoshi Ito

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Door engagement device for elevator
    • Patent number 8,973,714
    • Issue date Mar 10, 2015
    • Mitsubishi Electric Corporation
    • Kenji Utsunomiya
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    Door device for an elevator
    • Patent number 7,992,688
    • Issue date Aug 9, 2011
    • Mitsubishi Electric Corporation
    • Kenji Utsunomiya
    • B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

  • Information Patent Application

    DOOR ENGAGEMENT DEVICE FOR ELEVATOR
    • Publication number 20120118676
    • Publication date May 17, 2012
    • MITSUBISHI ELECTRI CORPORATION
    • Kenji Utsunomiya
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Application

    DOOR DEVICE FOR AN ELEVATOR
    • Publication number 20090272605
    • Publication date Nov 5, 2009
    • Mitsubishi Electric Corporation
    • Kenji Utsunomiya
    • B66 - HOISTING LIFTING HAULING