ALEXANDRIA, Va., May 1 -- United States Patent no. 11,974,439, issued on April 30, was assigned to KIOXIA Corp. (Tokyo).

"Semiconductor memory having memory cell regions and other regions alternately arranged along a bit line direction" was invented by Tomoo Hishida (Kamakura Kanagawa, Japan), Sadatoshi Murakami (Yokohama Kanagawa, Japan), Ryota Katsumata (Yokkaichi Mie, Japan) and Masao Iwase (Yokkaichi Mie, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor memory includes a memory cell region that includes multiple memory cells stacked above a semiconductor substrate, first and second dummy regions on opposite sides of the memory cell region, each dummy region including multiple dummy ce...