Patents by Inventor Guofu Yang

Guofu Yang 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).

  • Lid with a straw
    Patent number: D911100
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: February 23, 2021
    Assignees: ZHEJIANG HONGUNG INDUSTRY AND TRADE CO., LTD., FUJIAN SPD E-COMMERCE CO., LTD.
    Inventors: Xiaolei Chen, Xiaoqiang Lin, Guofu Yang
  • Bottle cap
    Patent number: D922135
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: June 15, 2021
    Inventors: Xinxing Chen, Guofu Yang
  • Bottle cap
    Patent number: D924000
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: July 6, 2021
    Inventors: Xinxing Chen, Guofu Yang
  • Bottle cap
    Patent number: D957875
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: July 19, 2022
    Inventors: Xinxing Chen, Guofu Yang
  • Bottle cap
    Patent number: D1006535
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: December 5, 2023
    Inventors: Xinxing Chen, Guofu Yang