Patents by Inventor Kun-Tsai Yeh

Kun-Tsai Yeh 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: D504916
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: May 10, 2005
    Inventor: Kun-Tsai Yeh
  • Pen
    Patent number: D509538
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: September 13, 2005
    Inventor: Kun-Tsai Yeh
  • Pen
    Patent number: D534956
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: January 9, 2007
    Inventor: Kun-Tsai Yeh
  • Combined magnifier and pen
    Patent number: D538321
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: March 13, 2007
    Inventor: Kun-Tsai Yeh
  • Pen
    Patent number: D541858
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: May 1, 2007
    Inventor: Kun-Tsai Yeh
  • Pen
    Patent number: D478625
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: August 19, 2003
    Inventor: Kun-Tsai Yeh
  • Pen
    Patent number: D578571
    Type: Grant
    Filed: February 3, 2007
    Date of Patent: October 14, 2008
    Inventor: Kun-Tsai Yeh
  • Pen
    Patent number: D491604
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: June 15, 2004
    Inventor: Kun-Tsai Yeh
  • Pen
    Patent number: D493834
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: August 3, 2004
    Inventor: Kun-Tsai Yeh
  • Pen
    Patent number: D500339
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: December 28, 2004
    Inventor: Kun-Tsai Yeh
  • Brush pen
    Patent number: D600920
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: September 29, 2009
    Inventor: Kun-Tsai Yeh
  • Whistle pen
    Patent number: D601625
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: October 6, 2009
    Inventor: Kun-Tsai Yeh
  • Retractable correction tape
    Patent number: D619174
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: July 6, 2010
    Inventor: Kun-Tsai Yeh
  • Clip pen
    Patent number: D627391
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: November 16, 2010
    Inventor: Kun-Tsai Yeh
  • Pen
    Patent number: D661735
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: June 12, 2012
    Inventor: Kun-Tsai Yeh