TREA

Kazuo Hamazato

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  • Itsukaichi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hybrid circuit in a telephone subscriber interface circuit
    • Patent number 4,491,700
    • Issue date Jan 1, 1985
    • Nippon Telegraph and Telephone Public Corporation
    • Toshiyuki Tahara
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Current supply circuit
    • Patent number 4,465,967
    • Issue date Aug 14, 1984
    • Hitachi, Ltd.
    • Michio Tokunaga
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Loop detecting circuit
    • Patent number 4,360,709
    • Issue date Nov 23, 1982
    • Hitachi, Ltd.
    • Kazuo Hamazato
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Time division telephone switching systems
    • Patent number 4,254,498
    • Issue date Mar 3, 1981
    • Nippon Telegraph and Telephone Public Corporation
    • Kanzi Tawara
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE