ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,394,809, issued on Aug. 19, was assigned to YANMAR HOLDINGS Co. LTD. (Osaka, Japan).
"Fuel cell ship" was invented by Manabu Shinagawa (Osaka, Japan), Takehiro Maruyama (Osaka, Japan), Yasuyoshi Yamaguchi (Osaka, Japan), Takuya Hiraiwa (Osaka, Japan) and Yukihiko Kimura (Kunisaki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fuel cell ship includes a fuel cell that generates electric power by an electrochemical reaction of fuel, a propulsion device that generates propulsive force on a hull by electric power supplied from the fuel cell, a fuel supply pipe through which the fuel is supplied from a fuel tank housing the fuel to the fuel cell, a d...