Patents by Inventor Changjin Ma

Changjin Ma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Microphone assembly
    Patent number: 11290798
    Abstract: A microphone assembly includes a circuit board and a microphone array disposed on the circuit board. The circuit board includes: a first FPC extending along a first direction, and a second FPC extending along a second direction different from the first direction and separated from the first FPC, the second FPC and the first FPC are fixed to each other and form an electrical connection, and the microphone array is disposed on the first FPC.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: March 29, 2022
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Guixia Yang, Changjin Ma, Jianwei Chen
  • MICROPHONE ASSEMBLY
    Publication number: 20200045400
    Abstract: A microphone assembly includes a circuit board and a microphone array disposed on the circuit board. The circuit board includes: a first FPC extending along a first direction, and a second FPC extending along a second direction different from the first direction and separated from the first FPC, the second FPC and the first FPC are fixed to each other and form an electrical connection, and the microphone array is disposed on the first FPC.
    Type: Application
    Filed: July 29, 2019
    Publication date: February 6, 2020
    Inventors: Guixia Yang, Changjin Ma, Jianwei Chen