TREA

Humio Ookuma

Follow

Person

  • Oita, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Method of rolling metal
    • Patent number 4,494,205
    • Issue date Jan 15, 1985
    • Nippon Steel Corporation
    • Osamu Dairiki
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...