U.S. patent application 20180251986 (applicant Max Life LLC, Salisbury, N.C.):
"A wall panel may have a layer made from magnesium oxide, a first insulation layer made from a two-part rigid urethane pour foam, and a second insulation layer made from a phase change material. The first insulation layer maybe chemically bonded to the magnesium oxide layer and may also be bonded to the phase change layer. The first insulation layer may be positioned between the second insulation layer and the magnesium oxide layer. The magnesium oxide layer may be a finished surface or a veneer layer may be applied to the magnesium oxide layer."