ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,227, issued on March 18, was assigned to YAMAHA HATSUDOKI K.K. (Shizuoka, Japan).
"Marine propulsion system and marine vessel" was invented by Yuji Ikegaya (Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A marine propulsion system includes a controller configured or programmed to perform a rudder angle change control to change a rudder angle of an auxiliary propulsion device by a predetermined angle to one side in a right-left direction of a hull with respect to a forward-rearward direction of the hull so as to move the hull along the forward-rearward direction without rotating the hull when motorized forward-rearward movement is pe...