TREA

Fukitaka Abukawa

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • 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...