Patents by Inventor Huanchang Sheng

Huanchang Sheng 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).

  • Safe
    Patent number: D919225
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: May 11, 2021
    Assignee: SAILVAN TIMES CO., LTD.
    Inventor: Huanchang Sheng
  • Foot bath
    Patent number: D924419
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: July 6, 2021
    Assignee: SAILVAN TIMES CO., LTD.
    Inventor: Huanchang Sheng
  • Foot bath
    Patent number: D925052
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: July 13, 2021
    Assignee: SAILVAN TIMES CO., LTD.
    Inventor: Huanchang Sheng