Patents by Inventor Anthony S. Ryff

Anthony S. Ryff 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).

  • Modified chess game
    Patent number: 6382626
    Abstract: A modified chess game known as Royal Chess is disclosed in which the traditional king and queen pawns are replaced by shield pawns (42, 42A) possessing the traditional moves and characteristics of traditional pawns (40), plus the ability to move laterally one file in either direction of their rank.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: May 7, 2002
    Inventor: Anthony S. Ryff