ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,337, issued on Oct. 28, was assigned to Honda Motor Co. Ltd. (Tokyo).
"Marine vessel" was invented by Kenta Sugitate (Wako, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A marine vessel (10) includes: a hull (11); an electric propulsion portion (15) that propels the hull (11); a water tank portion (20) that is provided on the hull (11) and is capable of storing water in the water tank portion; a float portion (40) that is provided within the water tank portion (20) so as to be movable upward and downward; and a battery case (30) that is attached to the float portion (40) and is capable of storing a detachable portable battery (35) which becom...