Patents by Inventor Yuanqi Guo

Yuanqi Guo 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).

  • Pen
    Patent number: D641405
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: July 12, 2011
    Assignee: Beifa Group Co., Ltd.
    Inventor: Yuanqi Guo
  • Pen
    Patent number: D648385
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: November 8, 2011
    Assignee: Beifa Group Co., Ltd.
    Inventor: Yuanqi Guo