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Chao Zhang

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  • Changzhou, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Loudspeaker
    • Patent number 12,356,172
    • Issue date Jul 8, 2025
    • AAC Microtech (Changzhou) Co., Ltd.
    • Li Ren
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Sound device
    • Patent number 12,356,173
    • Issue date Jul 8, 2025
    • AAC Microtech (Changzhou) Co., Ltd.
    • Li Ren
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    SPEAKER
    • Publication number 20250203292
    • Publication date Jun 19, 2025
    • AAC MICROTECH (CHANGZHOU) CO., LTD.
    • Chao Zhang
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker and Electronic Device Using Same
    • Publication number 20250203294
    • Publication date Jun 19, 2025
    • AAC MICROTECH (CHANGZHOU) CO., LTD.
    • Chao Zhang
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SPEAKER
    • Publication number 20250184668
    • Publication date Jun 5, 2025
    • AAC MICROTECH (CHANGZHOU) CO., LTD.
    • Qun Xiang
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SPEAKER
    • Publication number 20240414477
    • Publication date Dec 12, 2024
    • AAC Microtech (Changzhou) Co., Ltd.
    • Chao Zhang
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Coaxial Speaker
    • Publication number 20240406635
    • Publication date Dec 5, 2024
    • AAC MICROTECH (CHANGZHOU) CO., LTD.
    • Chao Zhang
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker Box
    • Publication number 20240406605
    • Publication date Dec 5, 2024
    • AAC MICROTECH (CHANGZHOU) CO., LTD.
    • Chao Zhang
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker module
    • Publication number 20240406638
    • Publication date Dec 5, 2024
    • AAC MICROTECH (CHANGZHOU) CO., LTD.
    • Chao Zhang
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker
    • Publication number 20240406633
    • Publication date Dec 5, 2024
    • AAC MICROTECH (CHANGZHOU) CO., LTD.
    • Chao Zhang
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Flexible Printed Circuit Board and Speaker Using Same
    • Publication number 20240244741
    • Publication date Jul 18, 2024
    • AAC MICROTECH (CHANGZHOU) CO., LTD.
    • Zhijie Dong
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SOUND DEVICE
    • Publication number 20240214741
    • Publication date Jun 27, 2024
    • AAC MICROTECH (CHANGZHOU) CO., LTD.
    • Li Ren
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Sound device
    • Publication number 20240187797
    • Publication date Jun 6, 2024
    • AAC MICROTECH (CHANGZHOU) CO., LTD.
    • Li Ren
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Sound device
    • Publication number 20240187798
    • Publication date Jun 6, 2024
    • AAC MICROTECH (CHANGZHOU) CO., LTD.
    • Li Ren
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Loudspeaker
    • Publication number 20240187796
    • Publication date Jun 6, 2024
    • AAC MICROTECH (CHANGZHOU) CO., LTD.
    • Li Ren
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE