Phase Change Matters

U.S. patent application 20200260882 (applicant Dreamwell Ltd., Atlanta, Ga.):

"A mattress assembly comprising: at least one layer proximate to a sleeping surface of the mattress assembly spanning at least a portion of the length and/or width of the sleeping surface comprising: a two-ply preformed capsulate sheet comprising a plurality of cells; and a phase change material within at least a portion of the plurality of cells."

http://www.freepatentsonline.com/20200260882.pdf