ALEXANDRIA, Va., July 15 -- United States Patent no. 12,665,257, issued on June 23, was assigned to SK On Co. Ltd. (Seoul, South Korea).

"Battery module including pressure drop sheet" was invented by Tae Il Kim (Daejeon, South Korea), Seo Roh Rhee (Daejeon, South Korea) and Ju Young Jeong (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a battery module including: a battery cell stack in which a plurality of battery cells are stacked; and a pressure drop sheet on one side of the battery cell stack, in which the pressure drop sheet includes: a ventilation layer including ceramic fiber; and a sacrificial layer on at least one surface of the ventilation laye...