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Katsuyuki Morozumi

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  • Utsunomiya, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of manufacturing spline shaft
    • Patent number 6,336,351
    • Issue date Jan 8, 2002
    • Mitsubishi Steel Mfg. Co., Ltd.
    • Akio Kobayashi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Spline forming die
    • Patent number 5,865,055
    • Issue date Feb 2, 1999
    • Mitsubishi Steel Mfg. Co., Ltd.
    • Katsuyuki Morozumi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of forming internal spline shaft
    • Patent number 5,730,018
    • Issue date Mar 24, 1998
    • Mitsubishi Steel Mfg. Co., Ltd.
    • Akio Kobayashi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...