Patents by Inventor Jianfeng Yan

Jianfeng Yan 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: D616025
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: May 18, 2010
    Assignee: Beifa Group Co., Ltd.
    Inventor: Jianfeng Yan