TREA

Takao Tamagawa

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  • Kitakatsuragi-gun, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Toroidal type continuously variable transmission
    • Patent number 6,402,658
    • Issue date Jun 11, 2002
    • Koyo Seiko Co., Ltd.
    • Shinji Yasuhara
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Variable diameter pulley
    • Patent number 6,129,643
    • Issue date Oct 10, 2000
    • Koyo Seiko Co., Ltd.
    • Takao Tamagawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Variable diameter pulley
    • Patent number 6,017,285
    • Issue date Jan 25, 2000
    • Koyo Seiko Co., Ltd.
    • Shinji Yasuhara
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Hydraulic transmission coupling apparatus
    • Patent number 5,074,825
    • Issue date Dec 24, 1991
    • Koyo Seiko Co., Ltd.
    • Yoshiaki Hamasaki
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Tip for a cutting tool
    • Patent number 5,056,963
    • Issue date Oct 15, 1991
    • Koyo Seiko Co., Ltd.
    • Ryoki Kameno
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR