TREA

Sensuke Okada

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  • Katsuta, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Rollers for rolling mills
    • Patent number 4,941,251
    • Issue date Jul 17, 1990
    • Hitachi, Ltd.
    • Masahisa Sobue
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Rollers for rolling mills
    • Patent number 4,839,949
    • Issue date Jun 20, 1989
    • Hitachi, Ltd.
    • Masahisa Sobue
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...