ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,327, issued on March 24, was assigned to Hayward Industries Inc. (Charlotte, N.C.).

"Modulating pool or spa heater systems and associated methods" was invented by William Julian Roy (Thompson's Station, Tenn.), Benjamin Isaac Corn (Columbia, Tenn.) and Troy Renken (Hendersonville, Tenn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A modulating heater system for a pool or spa includes a pool/spa heater capable of variably modulating energy output thereof and a controller communicatively coupled to the heater. The controller determines a current mode of operation for the heater, and establishes temperature overshoot and target temperature setpoints...