ALEXANDRIA, Va., July 3 -- United States Patent no. 12,348,167, issued on July 1, was assigned to HYUNDAI MOTOR COMPANY (Seoul, South Korea) and KIA Corp. (Seoul, South Korea).

"Power module and motor drive system using the same" was invented by Myung Ill You (Gwangju, South Korea) and Hyun Koo Lee (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "An embodiment provides a power module that includes a first substrate comprising first material, a plurality of first switching elements on the first substrate, a second substrate comprising second material having a lower thermal conductivity than the first material, a plurality of second switching elements and a third switching element on the seco...