Patents by Inventor Tangchun Feng

Tangchun Feng 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).

  • Double bowl bead spinner
    Patent number: D1023703
    Type: Grant
    Filed: July 25, 2022
    Date of Patent: April 23, 2024
    Inventor: Tangchun Feng
  • Electric bead spinner
    Patent number: D1065326
    Type: Grant
    Filed: July 24, 2022
    Date of Patent: March 4, 2025
    Assignee: Shenzhen Rongyao Technology Co., Ltd.
    Inventor: Tangchun Feng
  • Bead spinner
    Patent number: D1067973
    Type: Grant
    Filed: July 25, 2022
    Date of Patent: March 25, 2025
    Assignee: Shenzhen Rongyao Technology Co., Ltd.
    Inventor: Tangchun Feng