ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,477,414, issued on Nov. 18, was assigned to Apple Inc. (Cupertino, Calif.).
"Voice over internet protocol multimedia subsystem" was invented by Nitin Kuppelur (Bangalore, India), Anish George (Bangalore, India), Karthik Anantharaman (Cupertino, Calif.) and Deepak Dash (Bangalore, India).
According to the abstract* released by the U.S. Patent & Trademark Office: "This disclosure describes a user equipment device (UE). The UE includes one or more antennas; one or more radios configured to perform cellular communication using a plurality of radio access technologies (RATs) that support voice over an Internet protocol (IP) multimedia subsystem (IMS); and one or more processors coupled to...