ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,472,529, issued on Nov. 18, was assigned to LG Energy Solution Ltd. (Seoul, South Korea).

"Step-height measurement device and method for slot die" was invented by Jiwoong Jang (Daejeon, South Korea) and Sang Su Ryu (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for measuring a step difference between a lip and a shim of a slot die includes: a laser sensor configured to measure a step difference between a lip and a shim of a slot die, the laser sensor being disposed to face the lip and the shim of the slot die, and a jig configured to come into contact with at least a part of the body where a portion of the slot die fro...