Naohisa OHYA

Person

  • Niigata, JP

Patents Grantslast 30 patents

  • Information Patent Grant

    Seal ring

    • Patent number 10,267,421
    • Issue date Apr 23, 2019
    • Kabushiki Kaisha Riken
    • Naohisa Ohya
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Seal Ring

    • Publication number 20180292010
    • Publication date Oct 11, 2018
    • Kabushiki Kaisha Riken
    • NAOHISA OHYA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Seal Ring

    • Publication number 20160238134
    • Publication date Aug 18, 2016
    • Kabushiki Kaisha Riken
    • Naohisa OHYA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...