ALEXANDRIA, Va., June 16 -- United States Patent no. 12,310,091, issued on May 20, was assigned to Taiwan Semiconductor Manufacturing Co. Ltd. (Hsinchu, Taiwan).

"Semiconductor device and method" was invented by Wei-Min Liu (Hsinchu, Taiwan), Hsueh-Chang Sung (Zhubei, Taiwan) and Yee-Chia Yeo (Hsinchu, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method includes forming a gate structure over fins protruding from a semiconductor substrate; forming an isolation region surrounding the fins; depositing a spacer layer over the gate structure and over the fins, wherein the spacer layer fills the regions extending between pairs of adjacent fins; performing a first etch on the spacer layer, wherein after ...