Patents by Inventor Chang-Rong Chen

Chang-Rong Chen 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).

  • Grip for hand tool
    Patent number: D469327
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: January 28, 2003
    Inventor: Chang-Rong Chen
  • Grip for hand tool
    Patent number: D478267
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: August 12, 2003
    Inventor: Chang-Rong Chen