TREA

Hiroshi Kotani

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  • Osaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Universal joint
    • Patent number 4,921,470
    • Issue date May 1, 1990
    • Koyo Seiko Co.
    • Hiroshi Kotani
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Universal joint
    • Patent number 4,834,658
    • Issue date May 30, 1989
    • Koyo Seiko Co., Ltd.
    • Hiroshi Kotani
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...