ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,557,308, issued on Feb. 17, was assigned to SAMSUNG ELECTRONICS Co. LTD. (Suwon-si, South Korea).

"Semiconductor device" was invented by Hongsik Chae (Suwon-si, South Korea), Taekyun Kim (Suwon-si, South Korea), Jinsu Lee (Hwaseong-si, South Korea), Yirang Lim (Suwon-si, South Korea), Hanjin Lim (Seoul, South Korea) and Hyungsuk Jung (Suwon-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor device includes: a substrate; a contact plug on the substrate; a lower electrode electrically connected to the contact plug, and including a first electrode layer, a first buffer layer, and a second electrode layer, sequentially stacked; a...