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Masao Sakamoto

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Patents Grantslast 30 patents

  • Information Patent Grant

    Shock-absorbing mechanism for power-transmission device
    • Patent number 6,913,105
    • Issue date Jul 5, 2005
    • Hitachi, Ltd.
    • Toshiyuki Masuda
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Outer joint part of a constant velocity ball joint
    • Patent number 6,146,281
    • Issue date Nov 14, 2000
    • Unisia Jecs Corporation
    • Mitsumasa Iijima
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Apparatus for forming a cup-shaped cage
    • Patent number 5,970,776
    • Issue date Oct 26, 1999
    • Unisia Jecs Corporation
    • Mitsumasa Iijima
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Universal joint
    • Patent number 5,885,162
    • Issue date Mar 23, 1999
    • Unisia Jecs Corporation
    • Masao Sakamoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents