TREA

Tetsuya Ohba

Follow

Person

  • Muroran, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Roll for mill and method of making a roll for a mill
    • Patent number 4,961,261
    • Issue date Oct 9, 1990
    • Nippon Steel Corporation
    • Tatsuo Kojima
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Roll for mill
    • Patent number 4,817,410
    • Issue date Apr 4, 1989
    • Mitsubishi Kinzoku Kabushiki Kaisha
    • Takashi Yatsuzuka
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...