Patents by Inventor Hao T Cao

Hao T Cao 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).

  • Foot treatment device
    Patent number: D750795
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: March 1, 2016
    Inventor: Hao T Cao
  • Game box
    Patent number: D855109
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: July 30, 2019
    Inventor: Hao T. Cao