Patents by Inventor Gyu-Il Byeon

Gyu-Il Byeon 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).

  • Cheat preventing OMR cardcheat preventing OMR card
    Patent number: 7984856
    Abstract: A cheat preventing optical mark recognition (OMR) card capable of preventing cheating of examinees by configuring a marking part thereof such that marks formed on the marking part are not easily recognized from angles other than a right angle, that is, a front of the card. The cheat preventing OMR card includes the marking part and an answer checking section of the marking part includes a shaded background.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: July 26, 2011
    Inventors: Gyu-Il Byeon, Jung-Ho Lee
  • CHEAT PREVENTING OMR CARDCHEAT PREVENTING OMR CARD
    Publication number: 20090188982
    Abstract: A cheat preventing optical mark recognition (OMR) card capable of preventing cheating of examinees by configuring a marking part thereof such that marks formed on the marking part are not easily recognized from angles other than a right angle, that is, a front of the card. The cheat preventing OMR card includes the marking part and an answer checking section of the marking part includes a shaded background.
    Type: Application
    Filed: June 5, 2008
    Publication date: July 30, 2009
    Inventors: Gyu-Il BYEON, Jung-Ho Lee