Patent of the Day

Just another site

  • Enter your email address to subscribe to this blog and receive notifications of new posts by email.

    Join 7 other followers

  • Find Innovative IP on Facebook

  • Advertisements

Posts Tagged ‘las vegas’

You Can’t Win If You Don’t Play

Posted by innovativeip on March 3, 2011

This week, I’m in Las Vegas for a conference, so what better subject matter for the Patent of the Day than a gambling-related patent?!  My selection is U.S. Patent no. 5,722,891, issued on March 3, 1998 to Eagle Co., Ltd., of Japan, for a Slot Machine with Two Distinct Sets of Wheels:

March 3, 1998, Dual-Wheel Slot Machine

This particular patent covers the operative scenario when a first “winning” result causes spinning of a “bonus” reel.  If you’ve ever played any slots, you know that any such bonus action adds to the excitement of your spin, creating a second level of “potential win” anticipation. 

This patent was successfully sold in 2003 to slot machine giant International Gaming Technology (IGT), along with a portfolio of others.  No doubt, the sale of the entire patent portfolio by Eagle Co. to IGT was huge jackpot, all spinning aside.  If you’d like to know more on that sale, it can be found at

If you’d like to read the entire patent and learn a bit more about slot machine mechanics, head over to, where you can find all of the Patents of the Day.  Enjoy!


Posted in Uncategorized | Tagged: , , , , , , , | Leave a Comment »