Patents by Inventor Mao-Chien Chao

Mao-Chien Chao 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).

  • Chair base
    Patent number: D507436
    Type: Grant
    Filed: January 2, 2003
    Date of Patent: July 19, 2005
    Assignee: Hsin Chernq Enterprise Co., Ltd.
    Inventor: Mao-Chien Chao