Patents by Inventor Ruizhang Chang

Ruizhang Chang 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).

  • Audio adapter
    Patent number: D1010647
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: January 9, 2024
    Assignee: SHENZHEN JIEMEISI INDUSTRIAL CO., LTD.
    Inventor: Ruizhang Chang
  • Wireless vehicle player
    Patent number: D1036408
    Type: Grant
    Filed: November 2, 2022
    Date of Patent: July 23, 2024
    Assignee: SHENZHEN JIEMEISI INDUSTRIAL CO., LTD.
    Inventor: Ruizhang Chang
  • Wireless vehicle player
    Patent number: D1036409
    Type: Grant
    Filed: May 26, 2023
    Date of Patent: July 23, 2024
    Assignee: SHENZHEN JAMES AUDIO TECHNOLOGY CO., LTD
    Inventor: Ruizhang Chang
  • Wireless vehicle player
    Patent number: D1036410
    Type: Grant
    Filed: May 26, 2023
    Date of Patent: July 23, 2024
    Assignee: SHENZHEN JAMES AUDIO TECHNOLOGY CO., LTD
    Inventor: Ruizhang Chang
  • Wireless audio player for vehicle
    Patent number: D1058528
    Type: Grant
    Filed: April 10, 2023
    Date of Patent: January 21, 2025
    Assignee: SHENZHEN JAMES AUDIO TECHNOLOGY CO., LTD
    Inventor: Ruizhang Chang