TREA

Sadayuki Ishii

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  • Fukushima-ken, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Disk device
    • Patent number 6,301,214
    • Issue date Oct 9, 2001
    • Alps Electric Co., Ltd.
    • Tatsumaro Yamashita
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Disk device
    • Patent number 6,052,351
    • Issue date Apr 18, 2000
    • Alps Electric Co., Ltd.
    • Tatsumaro Yamashita
    • G11 - INFORMATION STORAGE