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Yasuyuki Okumura

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Point-to-multipoint optical transmission system
    • Patent number 5,539,564
    • Issue date Jul 23, 1996
    • Nippon Telegraph & Telephone Corporation
    • Kiyomi Kumozaki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Polyphase phase lock oscillator
    • Patent number 4,682,327
    • Issue date Jul 21, 1987
    • Nippon Telegraph and Telephone Corp.
    • Yasuyuki Okumura
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE