ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,394,889, issued on Aug. 19, was assigned to Sony Group Corp. (Tokyo).
"Wave control medium, wave control element, wave control member, wave control device, and manufacturing method of wave control medium" was invented by Eri Igarashi (Tokyo) and Takashi Kawamura (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "To provide a wave control medium that can absorb and control wave motion while achieving downsizing and wider bandwidth of a metamaterial and the like.A wave control medium 5 includes a three-dimensional microstructure having a base 2, a spiral part 3, and a matching element 6 disposed between the base 2 and the spiral part 3, in which the th...