TREA

Masahiko Watanabe

Follow

Person

  • Yokohama, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus for steel hardening and process therefor
    • Patent number 5,795,538
    • Issue date Aug 18, 1998
    • Dowa Mining Co., Ltd.
    • Fumitaka Abukawa
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Gas-carburizing process and apparatus
    • Patent number 5,225,144
    • Issue date Jul 6, 1993
    • Tokyo Heat Treating Company
    • Keishichi Nanba
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Gas-carburizing process and apparatus
    • Patent number 5,133,813
    • Issue date Jul 28, 1992
    • Tokyo Heat Treating Company Ltd.
    • Keishichi Nanba
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...