ALEXANDRIA, Va., June 9 -- United States Patent no. 12,289,581, issued on April 29, was assigned to Cochlear Ltd. (Macquarie University, Australia).

"Electromagnetic transducer with specific internal geometry" was invented by Marcus Andersson (Gothenburg, Sweden), Tommy Bergs (Harryda, Sweden), Johan Gustafsson (Gothenburg, Sweden) and Anders Kallsvik (Gothenburg, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device, including an electromagnetic transducer including a bobbin having a space therein, a connection apparatus in fixed relationship to the bobbin configured to transfer vibrational energy directly or indirectly at least one of to or from the electromagnetic transducer, and a passage from t...