ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,596, issued on April 22, was assigned to Honda Motor Co. Ltd. (Tokyo).
"Method for manufacturing impeller" was invented by Shu Taguchi (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In an impeller comprising a rotatable hub and a plurality of blades provided circumferentially on the rotatable hub at regular intervals, the blades including first blades each having a first vibrational eigenvalue and second blades each having a second vibrational eigenvalue, the first blades and the second blades are circumferentially arranged with a predetermined regularity in a circumferential direction in an alternating manner and with a mistune distr...