Patents by Inventor Chieh Ma

Chieh Ma 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).

  • Protective gear
    Patent number: D868381
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: November 26, 2019
    Assignee: Holy Guards CO., LTD.
    Inventor: Chieh Ma
  • Protective gear
    Patent number: D868382
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: November 26, 2019
    Assignee: Holy Guards CO., LTD.
    Inventor: Chieh Ma