TREA

Tomonari Ishikawa

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  • Tokorozawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Disc player having improved optical axis adjusting system
    • Patent number 6,285,649
    • Issue date Sep 4, 2001
    • Pioneer Electronic Corporation
    • Akira Bessho
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Optical pickup apparatus
    • Patent number 6,175,545
    • Issue date Jan 16, 2001
    • Pioneer Electronic Corporation
    • Yusuke Akama
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Optical disc
    • Patent number 6,011,771
    • Issue date Jan 4, 2000
    • Pioneer Electronic Corporation
    • Yusuke Akama
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Optical pickup apparatus
    • Patent number 5,978,347
    • Issue date Nov 2, 1999
    • Pioneer Electronic Corporation
    • Yusuke Akama
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Optical pickup apparatus
    • Patent number 5,729,522
    • Issue date Mar 17, 1998
    • Pioneer Electronic Corporation
    • Yusuke Akama
    • G11 - INFORMATION STORAGE