Patents by Inventor Xinglei Sang

Xinglei Sang 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).

  • Strainer for seed cleaning
    Patent number: D940283
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: January 4, 2022
    Inventor: Xinglei Sang
  • Strainer for seed cleaning
    Patent number: D940838
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: January 11, 2022
    Inventor: Xinglei Sang
  • Knife holder
    Patent number: D976061
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: January 24, 2023
    Inventor: Xinglei Sang
  • Sealed screw cap
    Patent number: D997673
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: September 5, 2023
    Inventor: Xinglei Sang