TREA

Akio Yoshikawa

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  • Kawasaki, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical radio repeater with signal quality detection
    • Patent number 5,349,463
    • Issue date Sep 20, 1994
    • Victor Company of Japan
    • Kazutoshi Hirohashi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Repeater system
    • Patent number 5,289,306
    • Issue date Feb 22, 1994
    • Victor Company of Japan
    • Kazutoshi Hirohashi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE