ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,437,997, issued on Oct. 7, was assigned to DARWIN PRECISIONS Corp. (Hsinchu County, Taiwan).

"Method of fabricating metal mask" was invented by Yun-Pei Yang (Hsinchu County, Taiwan), Jen-Shun Lin (Hsinchu County, Taiwan) and Yu-Wei Chang (Hsinchu County, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of fabricating a metal mask includes receiving a conductive substrate with a first surface, a second surface opposite to the first surface, a third surface connecting the first and second surfaces, and a fourth surface opposite to the third surface and connecting the first and second surfaces. The method further includes forming trenches in a...