ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,450,987, issued on Oct. 21, was assigned to Aristocrat Technologies Inc. (Las Vegas).

"Electronic gaming systems and methods with short term persistence" was invented by Nathan Warms (Austin, Texas), Jennifer Mizzi (Reno, Nev.), Hanna Sanborn (Georgetown, Texas), Rogelio Decasa Jr. (Renton, Wash.), Jeffrey Uss (Liberty Hill, Texas), Erick Ching (Cedar Park, Texas) and Zachary Smith (Austin, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for providing a persistent feature in an electronic game includes: (A) simulates spinning of a plurality of reels; (B) generating a first spin result; (C) triggering a value feature based on the occurrence...