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Sumitoshi Mai

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  • Kashiwazaki, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Chill plate and stacked mold
    • Patent number 5,904,203
    • Issue date May 18, 1999
    • Kabushiki Kaisha Riken
    • Sumitoshi Mai
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Chill plate and stacked mold
    • Patent number 5,836,374
    • Issue date Nov 17, 1998
    • Kabushiki Kaisha Riken
    • Sumitoshi Mai
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Stacked mold
    • Patent number 5,778,965
    • Issue date Jul 14, 1998
    • Kabushiki Kaisha Riken
    • Sumitoshi Mai
    • B22 - CASTING POWDER METALLURGY