TREA

Tadahiko Watanabe

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  • Niigata, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Combined oil control ring
    • Patent number 9,410,625
    • Issue date Aug 9, 2016
    • Kabushiki Kaisha Riken
    • Masahiro Nakazawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Oil ring for internal combustion engine
    • Patent number 9,353,864
    • Issue date May 31, 2016
    • Kabushiki Kaisha Riken
    • Yunzhi Gao
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    COMBINED OIL CONTROL RING
    • Publication number 20140265149
    • Publication date Sep 18, 2014
    • Kabushiki Kaisha Riken
    • Masahiro Nakazawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    OIL RING FOR INTERNAL COMBUSTION ENGINE
    • Publication number 20120235359
    • Publication date Sep 20, 2012
    • Yunzhi Gao
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...