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Hiroyuki Negishi

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  • Ora-gun, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical pickup device
    • Patent number 7,508,746
    • Issue date Mar 24, 2009
    • Sanyo Electric Co., LTD
    • Hiroyuki Negishi
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Optical pickup device
    • Patent number 6,996,035
    • Issue date Feb 7, 2006
    • Sanyo Electric Co., LTD
    • Hiroyuki Negishi
    • G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

  • Information Patent Application

    Optical pickup device
    • Publication number 20060062101
    • Publication date Mar 23, 2006
    • Sanyo Electric Co., Ltd.
    • Hiroyuki Negishi
    • G11 - INFORMATION STORAGE
  • Information Patent Application

    Optical pickup device
    • Publication number 20030202454
    • Publication date Oct 30, 2003
    • SANYO ELECTRIC CO., LTD.
    • Hiroyuki Negishi
    • G11 - INFORMATION STORAGE