Patents by Inventor Mark G. Hayes

Mark G. Hayes 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: 5603501
    Abstract: The present invention provides for a game system having a generally rectangularly shaped board and a plurality of cards. The board is imprinted with indicia indicating addition, subtraction, multiplication, and division. The board is also imprinted with indicia indicating a first playing area, a second playing area, a third playing area, a fourth playing area, fifth playing area, a sixth playing area, a seventh playing area, and an eighth playing area. The cards are inscribed with an integer n, where n is an integer from 0 to 12. The cards are also inscribed with a mathematical symbol of +, -, .times., and .div.. In another embodiment of the present invention, there is provided a method for playing a mathematical board game. The method involves providing a board as described above with at least one erasable means for recording a score, and cards as described above. The plurality of cards are shuffled to form a deck.
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: February 18, 1997
    Inventor: Mark G. Hayes