U.S. patent application 20180224178 (applicant Solee Science & Technology USA, Berkeley Heights, N.J.):
"A thermal container insulated with phase change material comprising a plurality of panels to form a body with a plurality of sides, a bottom and a lid, wherein each panel further comprises: a lining board, a phase change cold storage board, an insulation board; and a skin board. The phase change cold storage board further comprises an array of openings filled with solid-solid phase change material. The thermal container can maximize its storage capacity without compromising any volume for ice. It can maintain an accurate temperature range suitable for transportation. The container is reinforced at various locations to improve stability and structural integrity."