TREA

Hideaki Yamakawa

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Wide-dynamic range light receiver
    • Patent number 5,254,851
    • Issue date Oct 19, 1993
    • Kabushiki Kaisha Toshiba
    • Hideaki Yamakawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Oscillation mode switching laser devices
    • Patent number 4,977,561
    • Issue date Dec 11, 1990
    • Kabushiki Kaisha Toshiba
    • Hiroyuki Ibe
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Optical amplifying device
    • Patent number 4,954,786
    • Issue date Sep 4, 1990
    • Kabushiki Kaisha Toshiba
    • Hideaki Yamakawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE