ALEXANDRIA, Va., June 16 -- United States Patent no. 12,658,697, issued on June 16, was assigned to SOUTHEAST UNIVERSITY (Nanjing, China), ELECTRIC POWER RESEARCH INSTITUTE OF YUNNAN POWER GRID Co. LTD. (Yunnan, China) and YUNNAN POWER GRID Co. LTD. (Yunnan, China).

"Method for calculating optimal energy flow of integrated electricity-gas system based on sequential convex programming" was invented by Pengxiang Liu (Nanjing, China), Zhi Wu (Nanjing, China), Hai Lu (Nanjing, China), Wei Gu (Nanjing, China), Yuping Lu (Nanjing, China), Enbo Luo (Nanjing, China), Dada Wang (Nanjing, China), Qirun Sun (Nanjing, China) and Hao Zhang (Nanjing, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for calcul...