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Hiroyuki Hayama

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  • Yokohama-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Fluid pressure shock absorber
    • Patent number 8,544,619
    • Issue date Oct 1, 2013
    • Hitachi, Ltd.
    • Hiroyuki Yamaguchi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Damping force adjustable fluid pressure shock absorber
    • Patent number 7,757,826
    • Issue date Jul 20, 2010
    • Hitachi, Ltd.
    • Hiroyuki Hayama
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Damping force adjustable fluid pressure shock absorber
    • Publication number 20090272611
    • Publication date Nov 5, 2009
    • Hiroyuki Hayama
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Fluid pressure shock absorber
    • Publication number 20080257668
    • Publication date Oct 23, 2008
    • Hiroyuki Yamaguchi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...