Patents by Inventor Ifay Fay Chang

Ifay Fay Chang 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: 8567787
    Abstract: A word game system for playing multiple word games and its corresponding play methods are disclosed. The game system and the multiple word games are all based on the word scramble process—constantly and dynamically scrambling the playing pieces to form words by all the players all the time, hence extremely stimulating and entertaining. The game system and its specific set of playing pieces with proper ranking distribution, value point assignments, math function selections and incorporation of wild playing pieces support a host of brain stimulating games including Scramble Word, Scramble Poker and Scramble Ma-Jong. These word games are playable in English and other languages and playable as board, computer, broadcasting as well as board-less games.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: October 29, 2013
    Inventor: Ifay Fay Chang
  • Patent number: 4035774
    Abstract: An electroluminescent memory and display device which may be switched from a first stable state to a second stable state in response to a relatively low switching voltage, and which may be maintained in said second stable state by a relatively low alternating sustain voltage. Basically, the solid state arrangement comprises a photoconductive layer separating first and second electroluminescent layers. The first electroluminescent layer is fabricated from an electroluminescent material having an emission band within the range of the excitation band of the photoconductive material of the interposing photoconductive layer. The second electroluminescent layer is fabricated from an electroluminescent material having an emission band outside of the range of the excitation band of the photoconductive material of the interposing photoconductive layer. Typically, the electroluminescent material of the second electroluminescent layer has an emission band in the visible range suitable for display purposes.
    Type: Grant
    Filed: December 19, 1975
    Date of Patent: July 12, 1977
    Assignee: International Business Machines Corporation
    Inventor: Ifay Fay Chang