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Donghui Ma

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  • Osaka, JP
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Patents Applicationslast 30 patents

  • Information Patent Application

    RESIDUAL STRESS IMPROVEMENT METHOD AND RESIDUAL STRESS IMPROVEMENT...
    • Publication number 20230207147
    • Publication date Jun 29, 2023
    • HITACHI ZOSEN CORPORATION
    • Donghui MA
    • G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
  • Information Patent Application

    SUNLIGHT CONCENTRATING APPARATUS
    • Publication number 20160040910
    • Publication date Feb 11, 2016
    • Hitachi Zosen Corporation
    • Satoshi ASHIDA
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    PIPE
    • Publication number 20150300535
    • Publication date Oct 22, 2015
    • Hitachi Zosen Corporation
    • Donghui MA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    PIPE AND METHOD FOR MANUFACTURING PIPE
    • Publication number 20150075663
    • Publication date Mar 19, 2015
    • Hitachi Zosen Corporation
    • Donghui Ma
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Application

    PIPE AND METHOD FOR MANUFACTURING PIPE
    • Publication number 20150047734
    • Publication date Feb 19, 2015
    • Hitachi Zosen Corporation
    • Shunsuke Kanagawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...