TREA

Isamu Yoshii

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  • Sendai, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Magnetic alloy
    • Patent number 4,362,581
    • Issue date Dec 7, 1982
    • Sony Corporation
    • Hiroshi Kimura
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Magnetic alloy
    • Patent number 4,299,622
    • Issue date Nov 10, 1981
    • Sony Corporation
    • Hiroshi Kimira
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...