THRM

Gentherm Inc

A maker of thermal-comfort technology best known for pioneering the heated-and-cooled "Climate Control Seat," along with heated steering wheels and other temperature-managing car features; it also makes medical warming products. Founded in 1991 in California as Amerigon by inventors Lon Bell and Richard Elwell, it renamed itself Gentherm in 2012 after expanding through a German acquisition. The tech relies on the 1834 Peltier effect, where electric current makes one side of a junction hot and the other cold.