ALEXANDRIA, Va., June 25 -- United States Patent no. 12,339,679, issued on June 24, was assigned to ZODIAC POOL SYSTEMS LLC (Carlsbad, Calif.).

"Systems and methods of creating certain water conditions in swimming pools or spas" was invented by David Goldman (Carlsbad, Calif.), Tracy Hanson (Carlsbad, Calif.) and Jeff Holmquist (Carlsbad, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: ""Just in time" operational techniques allow equipment of swimming pools or spas to achieve identified water temperatures at specified times. A user may supply information such as a desired water temperature (i.e. a temperature set point) and a time at which the water is desired to be at the desired temperature. After rec...