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Makoto Shirai

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  • Nagoya, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Throw away tip
    • Patent number 5,143,487
    • Issue date Sep 1, 1992
    • NGK Spark Plug Co., Ltd.
    • Makoto Shirai
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Throwaway tip
    • Patent number 4,273,480
    • Issue date Jun 16, 1981
    • NGK Spark Plug Co., Ltd.
    • Makoto Shirai
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR