ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,902, issued on March 25, was assigned to MITSUBISHI HEAVY INDUSTRIES LTD. (Tokyo).

"Gas turbine cogeneration system, method of operating gas turbine cogeneration system, and method of modifying gas turbine cogeneration system" was invented by Takashi Asao (Tokyo), Kazuhiko Sato (Tokyo), Shohei Yoshida (Tokyo) and Ryo Akiyama (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A gas turbine cogeneration system includes: a gas turbine; a first fuel supply facility for supplying a first fuel to the combustor; a second fuel supply facility for supplying a second fuel with a calorific value per mass lower than the first fuel; a heat recovery steam gen...