Patents by Inventor Shiang Shu Duan

Shiang Shu Duan 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).

  • Shoe sole
    Patent number: D612137
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: March 23, 2010
    Inventor: Shiang Shu Duan
  • Sandal sole
    Patent number: D402445
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: December 15, 1998
    Inventor: Shiang Shu Duan
  • Shoe sole
    Patent number: D657542
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: April 17, 2012
    Inventor: Shiang Shu Duan