ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,978, issued on June 23, was assigned to Pratt & Whitney Canada Corp. (Longueuil, Canada).

"Acoustic panel with different cell configurations" was invented by Richard Ivakitch (Scarborough, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "An acoustic panel for an aircraft includes a skin, a plurality of first cells and a plurality of second cells interspersed with the first cells. Each first cell includes a first tube, a first endwall and a first cavity. The first tube projects vertically out from the skin to a distal end of the first tube. The first endwall closes off the first cavity at its distal end. The first cavity extends vertically throu...