ALEXANDRIA, Va., April 15 -- United States Patent no. 12,604,457, issued on April 14, was assigned to Kioxia Corp. (Tokyo).
"Semiconductor memory device" was invented by Takafumi Masuda (Kawasaki, Japan), Mutsumi Okajima (Yokkaichi, Japan), Nobuyoshi Saito (Tokyo) and Keiji Ikeda (Kawasaki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor memory device comprises: a first memory layer; and a first via wiring and a second via wiring extending in a first direction, and having different positions from each other in a second direction. The first memory layer comprises: a first transistor electrically connected to the first via wiring; a memory portion electrically connected to the first transi...