Patents by Inventor Ryan K. Stephens

Ryan K. Stephens 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).

  • Patent number: 5275414
    Abstract: A method for playing team chess has been devised by using a modified chess board and using conventional chess rules. The gameboard has a square matrix of fourteen squares by fourteen squares. Four sets of conventional chess pieces are used, each set containing one king, one queen, two bishops, two knights, two rooks, and eight pawns. Each set of chess pieces differ in color, with two sets of pieces having light colors representing one team and two sets of chess pieces having dark colors representing the other team. The chess pieces move according to the conventional rules of chess. Each player's king must be checkmated two times by the opposing players before the player is removed from the game.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: January 4, 1994
    Inventors: Ryan K. Stephens, Christopher L. Zeis, Ronald R. Plew, Robert E. Mattsey