TREA

Yasuo Tsukuda

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  • Ome, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ferromagnetic amorphous alloy
    • Patent number RE33022
    • Issue date Aug 15, 1989
    • Hitachi, Ltd.
    • Shinji Takayama
    • 148 - Metal treatment
  • Information Patent Grant

    Ferromagnetic amorphous alloy
    • Patent number 4,306,908
    • Issue date Dec 22, 1981
    • Hitachi, Ltd.
    • Shinji Takayama
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Method for producing optical fiber preform
    • Patent number 4,259,101
    • Issue date Mar 31, 1981
    • Hitachi, Ltd.
    • Yasuo Tsukuda
    • C03 - GLASS MINERAL OR SLAG WOOL