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Yuji Shima

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  • Kashiwazaki, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Piston ring
    • Patent number 11,512,777
    • Issue date Nov 29, 2022
    • Kabushiki Kaisha Riken
    • Takashi Kimura
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Piston ring and its production method
    • Patent number 10,502,319
    • Issue date Dec 10, 2019
    • Kabushiki Kaisha Riken
    • Yuji Shima
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Piston ring and its production method
    • Patent number 10,227,670
    • Issue date Mar 12, 2019
    • Kabushiki Kaisha Riken
    • Yuji Shima
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Compression ring and its production method
    • Patent number 9,617,952
    • Issue date Apr 11, 2017
    • Kabushiki Kaisha Riken
    • Yuji Shima
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Compression ring and its production method
    • Patent number 9,599,223
    • Issue date Mar 21, 2017
    • Kabushiki Kaisha Riken
    • Yuji Shima
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Piston ring
    • Patent number 9,371,797
    • Issue date Jun 21, 2016
    • Kabushiki Kaisha Riken
    • Takuma Sekiya
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Piston ring
    • Patent number 9,347,559
    • Issue date May 24, 2016
    • Kabushiki Kaisha Riken
    • Takuma Sekiya
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Chromium nitride ion-plating coating and its production method, as...
    • Patent number 8,597,797
    • Issue date Dec 3, 2013
    • Kabushiki Kaisha Riken
    • Takuma Sekiya
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

  • Information Patent Application

    PISTON RING, AND METHOD FOR MANUFACTURING SAME
    • Publication number 20230083774
    • Publication date Mar 16, 2023
    • Kabushiki Kaisha Riken
    • Hiroki SAITO
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    PISTON RING
    • Publication number 20210071761
    • Publication date Mar 11, 2021
    • Kabushiki Kaisha Riken
    • Takashi KIMURA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    PISTON RING AND ITS PRODUCTION METHOD
    • Publication number 20180209541
    • Publication date Jul 26, 2018
    • Kabushiki Kaisha Riken
    • Yuji Shima
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    PISTON RING AND ITS PRODUCTION METHOD
    • Publication number 20170009314
    • Publication date Jan 12, 2017
    • Kabushiki Kaisha Riken
    • Yuji Shima
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    PRESSURE RING
    • Publication number 20160215882
    • Publication date Jul 28, 2016
    • Kabushiki Kaisha Riken
    • Yuji SHIMA
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    PISTON RING
    • Publication number 20140137733
    • Publication date May 22, 2014
    • Kabushiki Kaisha Riken
    • Takuma Sekiya
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    PISTON RING
    • Publication number 20140125013
    • Publication date May 8, 2014
    • Kabushiki Kaisha Riken
    • Takuma Sekiya
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    COMPRESSION RING AND ITS PRODUCTION METHOD
    • Publication number 20140117626
    • Publication date May 1, 2014
    • Kabushiki Kaisha Riken
    • Yuji Shima
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    COMPRESSION RING AND ITS PRODUCTION METHOD
    • Publication number 20130062835
    • Publication date Mar 14, 2013
    • Kabushiki Kaisha Riken
    • Yuji Shima
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    CHROMIUM NITRIDE ION-PLATING COATING AND ITS PRODUCTION METHOD, AS...
    • Publication number 20100295251
    • Publication date Nov 25, 2010
    • Takuma Sekiya
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...