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Hiroyuki Sugihara

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  • Kashiwazaki-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Combined oil control ring
    • Patent number 9,618,115
    • Issue date Apr 11, 2017
    • Kabushiki Kaisha Riken
    • Hiroyuki Yabune
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    COMBINED OIL CONTROL RING
    • Publication number 20150167844
    • Publication date Jun 18, 2015
    • Kabushiki Kaisha Riken
    • Hiroyuki YABUNE
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    COMBINED PISTON RING
    • Publication number 20130305918
    • Publication date Nov 21, 2013
    • Kabushiki Kaisha Riken
    • Fumihiro Okazaki
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...