Patents by Inventor Xiuling Du

Xiuling Du 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).

  • Portable toilet
    Patent number: D999348
    Type: Grant
    Filed: February 17, 2022
    Date of Patent: September 19, 2023
    Inventor: Xiuling Du
  • Portable toilet
    Patent number: D1000596
    Type: Grant
    Filed: February 28, 2023
    Date of Patent: October 3, 2023
    Assignee: Guangdong Guangmingfa Plastic Co., Ltd.
    Inventor: Xiuling Du
  • Portable toilet
    Patent number: D1064209
    Type: Grant
    Filed: December 7, 2023
    Date of Patent: February 25, 2025
    Assignee: Guangdong Guangmingfa Plastic Co., Ltd.
    Inventor: Xiuling Du