TREA

Akinori Nisizawa

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  • Saku, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Magnetic disk
    • Patent number 5,182,693
    • Issue date Jan 26, 1993
    • TDK Corporation
    • Keiji Koga
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Method for making a magnetic disk
    • Patent number 5,160,761
    • Issue date Nov 3, 1992
    • TDK Corporation
    • Keiji Koga
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording and reproduction
    • Patent number 5,140,486
    • Issue date Aug 18, 1992
    • TDK Corporation
    • Kenji Yokoyama
    • G11 - INFORMATION STORAGE