ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,777,643, issued on Oct. 27, was assigned to SK hynix Inc. (Icheon-si, South Korea).

"Semiconductor device" was invented by Jae Taek Kim (Icheon-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor device includes a substrate, a source structure disposed on the substrate, and cell stack structures disposed on the source structure. The semiconductor device also includes a dummy stack structure disposed between the cell stack structures on the source structure and vertical barriers disposed between the dummy stack structure and the cell stack structures. The semiconductor device further includes at least one lower protective patte...