TREA

Masa-aki Imamura

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  • Minami-ashigara, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,721,646
    • Issue date Jan 26, 1988
    • Hitachi, Ltd.
    • Keigo Iechika
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Coating method
    • Patent number 4,353,937
    • Issue date Oct 12, 1982
    • Hitachi, Ltd.
    • Katsuyoshi Chiba
    • G11 - INFORMATION STORAGE