ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,717,242, issued on Aug. 25, was assigned to TAIWAN SEMICONDUCTOR MANUFACTURING Co. LTD. (Hsinchu, Taiwan).

"Method of operating semiconductor apparatus" was invented by Shih-Ming Chang (Hsinchu County, Taiwan), Chiu-Hsiang Chen (Hsinchu County, Taiwan) and Ru-Gun Liu (Hsinchu County, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of operating a semiconductor apparatus includes generating an air flow that flows from a covering structure; causing a photomask to move over the covering structure such that particles attached to the photomask are blown away from the photomask by the air flow; and irradiating the photomask with light through a ...