Patents by Inventor Chiang Wen-Tsai

Chiang Wen-Tsai 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).

  • Safety helmet
    Patent number: D387500
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: December 9, 1997
    Inventor: Chiang Wen-Tsai