Patents by Inventor Sipan Liu

Sipan Liu 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).

  • Egg matching toy set
    Patent number: D919701
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: May 18, 2021
    Assignee: SHENZHEN LIANGYUAN TECHNOLOGY CO., LTD.
    Inventor: Sipan Liu
  • Toy
    Patent number: D990593
    Type: Grant
    Filed: December 22, 2021
    Date of Patent: June 27, 2023
    Assignee: SHENZHEN LIANGYUAN TECHNOLOGY CO., LTD.
    Inventor: Sipan Liu
  • Early learning toy set
    Patent number: D995649
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: August 15, 2023
    Assignee: SHENZHEN LIANGYUAN TECHNOLOGY CO., LTD.
    Inventor: Sipan Liu
  • Air pump
    Patent number: D1018226
    Type: Grant
    Filed: June 16, 2021
    Date of Patent: March 19, 2024
    Assignee: SHENZHEN LIANGYUAN TECHNOLOGY CO., LTD.
    Inventor: Sipan Liu