ALEXANDRIA, Va., March 5 -- United States Patent no. 12,243,546, issued on March 4, was assigned to Nokia Technologies Oy (Espoo, Finland).

"Conversational service" was invented by Lasse Juhani Laaksonen (Tampere, Finland), Miikka Tapani Vilermo (Siuro, Finland) and Arto Juhani Lehtiniemi (Lempaala, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus including circuitry configured to: enable a conversational service between a first user of the apparatus and a second user of a remote apparatus wherein the conversational service is a duplex service including simultaneous voice communication from the first user to the second user and voice communication from the second user to the first user; an...