ALEXANDRIA, Va., June 10 -- United States Patent no. 12,294,131, issued on May 6, was assigned to TDK Corp. (Tokyo).
"Multilayered filter device" was invented by Longfei Yi (Tokyo) and Shigemitsu Tomaki (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A filter device includes first to third resonators. Each of the first to third resonators includes a first line part and a second line part electrically connected to the first line part and having an impedance smaller than an impedance of the first line part. The impedance ratio in at least one of the first to third resonators is 0.3 or smaller. The shape of each of the second line part of the first resonator and the second line part of the second resonato...