TREA

Yuji Ishihara

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  • Saku, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,632,870
    • Issue date Dec 30, 1986
    • TDK Corporation
    • Shigeru Takamatsu
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,615,949
    • Issue date Oct 7, 1986
    • TDK Corporation
    • Kuniichi Yoda
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,608,315
    • Issue date Aug 26, 1986
    • TDK Corporation
    • Kuniichi Yoda
    • G11 - INFORMATION STORAGE