Patents by Inventor Qiankun Ma

Qiankun Ma 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: D572759
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: July 8, 2008
    Assignee: Beifa Group Co., Ltd.
    Inventors: Feng Zhao, Qiankun Ma
  • Marker
    Patent number: D572760
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: July 8, 2008
    Assignee: Beifa Group Co., Ltd.
    Inventor: Qiankun Ma
  • Dual-tip highlighter
    Patent number: D580489
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: November 11, 2008
    Assignee: Beifa Group Co., Ltd.
    Inventor: Qiankun Ma
  • Highlighter
    Patent number: D595351
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: June 30, 2009
    Assignee: Beifa Group Co., Ltd.
    Inventors: Fei Yu, Qiankun Ma
  • Highlighter
    Patent number: D597598
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: August 4, 2009
    Assignee: Beifa Group Co., Ltd.
    Inventor: Qiankun Ma
  • Pen
    Patent number: D602083
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: October 13, 2009
    Assignee: Beifa Group Co., Ltd.
    Inventor: Qiankun Ma
  • Pen
    Patent number: D602088
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: October 13, 2009
    Assignee: Beifa Group Co., Ltd.
    Inventor: Qiankun Ma
  • Highlighter
    Patent number: D605696
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: December 8, 2009
    Assignee: Beifa Group Co., Ltd.
    Inventor: Qiankun Ma
  • Pen
    Patent number: D605700
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: December 8, 2009
    Assignee: Beifa Group Co., Ltd.
    Inventor: Qiankun Ma
  • Marker
    Patent number: D609746
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: February 9, 2010
    Assignee: Beifa Group Co., Ltd.
    Inventor: Qiankun Ma
  • Pen
    Patent number: D609747
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: February 9, 2010
    Assignee: Beifa Group Co., Ltd.
    Inventor: Qiankun Ma