TREA

Eizaburo Yamada

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Patents Grantslast 30 patents

  • Information Patent Grant

    Semiconductor device
    • Patent number 5,001,536
    • Issue date Mar 19, 1991
    • Hitachi, Ltd.
    • Tadashi Fukuzawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Semiconductor optical device
    • Patent number 4,933,728
    • Issue date Jun 12, 1990
    • Hitachi, Ltd.
    • Tadashi Fukuzawa
    • B82 - NANO-TECHNOLOGY
  • Information Patent Grant

    Optical modulator
    • Patent number 4,847,573
    • Issue date Jul 11, 1989
    • Hitachi, Ltd.
    • Tadashi Fukuzawa
    • B82 - NANO-TECHNOLOGY