United States patent number 5,735,742 entitled Gaming Table Tracking System and Method and United States patent number 5,651,548 entitled Gaming Chips with Electronic Circuits Scanned by Antennas in Gaming Chip Placement Areas for Tracking the Movement of Gaming Chips Within a Casino Apparatus and Method.
Enpat granted an exclusive field of use license to Gaming Partners International Corporation in 2001, and a different non-exclusive field of use license to Progressive Gaming International in 2002.
Enpat sold the two patents and Enpat's license rights to Shuffle Master Inc. for 12.5 million dollars in 2004. The patent owners received more than eight million dollars from the revenues that Enpat received for licensing and sale of these two patents.
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