ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,336, issued on May 20, was assigned to Hyundai Motor Co. (Seoul, South Korea) and Kia Corp. (Seoul, South Korea).

"Method and system for controlling power factor correction circuit" was invented by Jae Hyun Kim (Incheon, South Korea) and Sung Uk Park (Busan, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "An embodiment method for controlling a power factor correction circuit includes detecting an AC zero voltage crossing point, detecting a current flowing through an inductor, and reducing a distortion of the current flowing through the inductor by determining a current at the AC zero voltage crossing point as a resistive current, an induc...