Patents by Inventor Chen Ching Chou

Chen Ching Chou 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 face mask
    Patent number: D245545
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: August 23, 1977
    Inventor: Chen Ching Chou