ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,306, issued on March 18, was assigned to CHIYODA Corp. (Kanagawa, Japan).

"Method and system for determining operating conditions of liquefied natural gas plant" was invented by Takayuki Ochiai (Yokohama, Japan) and Yoshihiro Yamaguchi (Yokohama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for determining an operating condition of a liquefied natural gas plant (2) includes preparing a training model (88) generated by machine learning using training data in which operating conditions data including a composition of a feed gas, a composition of a mixed refrigerant, and an ambient temperature and operation result data including a pro...