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Takuma Sekiya

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Patents Grantslast 30 patents

  • Information Patent Grant

    Sliding member and piston ring
    • Patent number 11,168,790
    • Issue date Nov 9, 2021
    • Kabushiki Kaisha Riken
    • Kazuya Kameda
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Sliding member and piston ring
    • Patent number 10,670,147
    • Issue date Jun 2, 2020
    • KABUSHIKI KAISHA RIKEN
    • Kazuya Kameda
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Combined oil control ring
    • Patent number 10,352,446
    • Issue date Jul 16, 2019
    • Kabushiki Kaisha Riken
    • Takayuki Ichikawa
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Piston ring
    • Patent number 10,100,929
    • Issue date Oct 16, 2018
    • Kabushiki Kaisha Riken
    • Keiji Honda
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Piston ring and its production method
    • Patent number 10,006,547
    • Issue date Jun 26, 2018
    • Kabushiki Kaisha Riken
    • Masayuki Sato
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Piston ring
    • Patent number 10,006,546
    • Issue date Jun 26, 2018
    • Kabushiki Kaisha Riken
    • Masayuki Sato
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • 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

    SLIDING MEMBER AND PISTON RING
    • Publication number 20200284346
    • Publication date Sep 10, 2020
    • Kabushiki Kaisha Riken
    • Kazuya KAMEDA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    SLIDING MEMBER AND PISTON RING
    • Publication number 20200056700
    • Publication date Feb 20, 2020
    • Kabushiki Kaisha Riken
    • Kazuya KAMEDA
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    COMBINED OIL CONTROL RING
    • Publication number 20170350508
    • Publication date Dec 7, 2017
    • Kabushiki Kaisha Riken
    • Takayuki ICHIKAWA
    • C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
  • Information Patent Application

    PISTON RING
    • Publication number 20160245407
    • Publication date Aug 25, 2016
    • Kabushiki Kaisha Riken
    • Keiji HONDA
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    PISTON RING
    • Publication number 20160238132
    • Publication date Aug 18, 2016
    • Kabushiki Kaisha Riken
    • Masayuki SATO
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    PISTON RING AND ITS PRODUCTION METHOD
    • Publication number 20160238133
    • Publication date Aug 18, 2016
    • Kabushiki Kaisha Riken
    • Masayuki SATO
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • 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

    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...