Patents by Inventor Youbing Zhang

Youbing Zhang 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: D559909
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: January 15, 2008
    Assignee: Beifa Group Co., Ltd.
    Inventors: Zhiming Qiu, Youbing Zhang
  • Pen
    Patent number: D568935
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: May 13, 2008
    Assignee: Beifa Group Co., Ltd.
    Inventors: Zhiming Qiu, Youbing Zhang
  • Pen
    Patent number: D568936
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: May 13, 2008
    Assignee: Beifa Group Co., Ltd.
    Inventors: Zhiming Qiu, Youbing Zhang
  • Pen
    Patent number: D570412
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: June 3, 2008
    Assignee: Beifa Group Co., Ltd.
    Inventors: Zhiming Qiu, Youbing Zhang
  • Pen
    Patent number: D587311
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: February 24, 2009
    Assignee: Beifa Group Co., Ltd.
    Inventor: Youbing Zhang