Patents by Inventor Yeh-Cheng Tsai

Yeh-Cheng 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).

  • Patent number: D535225
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: January 16, 2007
    Assignee: Dawson International, Inc.
    Inventor: Yeh-Cheng Tsai