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Junichi Umeda

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  • Hachioji, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Semiconductor light emitting element
    • Patent number 4,361,887
    • Issue date Nov 30, 1982
    • Hitachi, Ltd.
    • Michiharu Nakamura
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Semiconductor laser device
    • Patent number 4,178,604
    • Issue date Dec 11, 1979
    • Hitachi, Ltd.
    • Michiharu Nakamura
    • H01 - BASIC ELECTRIC ELEMENTS