Patents by Inventor Ya-Wen Shu

Ya-Wen Shu 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).

  • Locking device
    Patent number: D452809
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: January 8, 2002
    Assignee: Link Treasure Limited
    Inventors: Cheng-Fan Yang, Ya-Wen Shu