US Patent Issued to Sleep Number on Aug. 18 for "Mattress with adjustable firmness" (Minnesota, California, South Carolina Inventors)

ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,708,220, issued on Aug. 18, was assigned to Sleep Number Corp..

"Mattress with adjustable firmness" was invented by Kody Lee Karschnik (Plymouth, Minn.), Wade Daniel Palashewski (Andover, Minn.), Rob Nunn (Eden Prairie, Minn.), Eric Rose (Piedmont, S.C.), Samuel Hellfeld (San Diego), Jerry Boyer (Zimmerman, Minn.), Steven Jay Young (Los Gatos, Calif.) and Carl Hewitt (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A mattress can include one or more layers of foam material, an adjustable air layer including an air bladder, and a valve. The valve can be fluidically connected to the air bladder and configured to regulate pressure of the ai...