ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,445, issued on May 20, was assigned to Sleep Number Corp. (Minneapolis).

"Temperature controlled bed system" was invented by Michael J. Brykalski (South Lyon, Mich.), David Marquette (Farmington Hills, Mich.), John Terech (Milan, Mich.) and Robert Vidojevski (Brownstown, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "According to certain arrangements, a conditioner mat for use with a bed assembly includes an upper layer comprising a plurality of openings, a lower layer being substantially fluid impermeable, at least one interior chamber defined by the upper layer and the lower layer and a spacer material positioned within the interior chamber....