TREA

Ryuichi Ogawa

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  • Gunma, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Diversity receiver
    • Patent number 4,977,615
    • Issue date Dec 11, 1990
    • Sanyo Electric Co., Ltd.
    • Hirohisa Suzuki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Sound reproducer
    • Patent number 4,933,768
    • Issue date Jun 12, 1990
    • Sanyo Electric Co., Ltd.
    • Tsutomu Ishikawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Surround decoder
    • Patent number 4,905,283
    • Issue date Feb 27, 1990
    • Sanyo Electric Co., Ltd.
    • Tsutomu Ishikawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    PLL circuit for generating output signal synchronized with input si...
    • Patent number 4,870,684
    • Issue date Sep 26, 1989
    • Sanyo Electric Co., Ltd.
    • Masashi Arai
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    FMX stereophonic broadcast receiver
    • Patent number 4,864,637
    • Issue date Sep 5, 1989
    • Sanyo Electric Co, Ltd.
    • Tsutomu Ishikawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    FMX stereophonic receiver
    • Patent number 4,852,167
    • Issue date Jul 25, 1989
    • Sanyo Electric Co., Ltd.
    • Noboru Usui
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    FM/FMX stereophonic receiver
    • Patent number 4,809,328
    • Issue date Feb 28, 1989
    • Sanyo Electric Co., Ltd.
    • Noboru Usui
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE