ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,593, issued on Sept. 16, was assigned to Kay Seven Co. LTD. (Tokyo).
"Rudder" was invented by Sadatomo Kuribayashi (Tokyo) and Noriyuki Sasaki (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a rudder assembly producing significant thrust to reduce energy consumption of vessels during voyage. The rudder assembly is formed of first/second rudder units arranged on both sides of first/second propellers. As seen from rear, each first/second rudder unit is formed of left/right rudders arranged on the left/right of the first/second propeller. Each left/right rudder of the first/second rudder units is formed of a first left/right rudder p...