ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,554,160, issued on Feb. 17, was assigned to Semes Co. LTD. (Cheonan-si, South Korea).
"Treatment liquid ejection method and apparatus" was invented by Jun Seok Lee (Cheonan-si, South Korea), Beomjeong Oh (Cheonan-si, South Korea), Subeom Jeon (Cheonan-si, South Korea) and Jeong Ho Jo (Anyang-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a treatment liquid ejection method and apparatus capable of significantly increasing productivity and quality by greatly reducing a maintenance time of a head unit, the treatment liquid ejection method including (a) obtaining test image information by test-photographing a treatment liquid tes...