TREA

Chuanqi Zhang

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  • Guangdong, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pair of earphones
    • Patent number D1056874
    • Issue date Jan 7, 2025
    • Shenzhen Grandsun Electronic Co., Ltd.
    • Jiugao Peng
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone
    • Patent number D1042407
    • Issue date Sep 17, 2024
    • Shenzhen Grandsun Electronic Co., Ltd.
    • Jiugao Peng
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Pair of wireless earphones
    • Patent number D1026856
    • Issue date May 14, 2024
    • Shenzhen Grandsun Electronic Co., Inc.
    • Jiugao Peng
    • D14 - Recording, communication, or information retrieval equipment