ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,389, issued on April 21, was assigned to NORTH CHINA MUNICIPAL ENGINEERING DESIGN & RESEARCH INSTITUTE Co. LTD. (Tianjin, China).

"Multi-energy coupled cooling/heating system for buildings in long-term cooling region and operation method" was invented by Wenxue Gao (Tianjin, China), Mingchang Yang (Tianjin, China), Yan Wang (Tianjin, China), Lin Yang (Tianjin, China), Rongsong Yan (Tianjin, China), Yingjie Hu (Tianjin, China) and Qingwei Miao (Tianjin, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A multi-energy coupled cooling/heating system, including a multi-level management unit for heat sources, a solar energy heat collection unit, a li...