US Patent Issued to Kioxia on April 15 for "Method for manufacturing semiconductor memory device and semiconductor memory device" (Japanese Inventors)

ALEXANDRIA, Va., June 5 -- United States Patent no. 12,279,432, issued on April 15, was assigned to Kioxia Corp. (Tokyo).

"Method for manufacturing semiconductor memory device and semiconductor memory device" was invented by Hirotaka Tsuda (Tokyo) and Yusuke Oshiki (Kuwana Mie, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "According to one embodiment, a method for manufacturing a semiconductor memory device includes simultaneously forming a plurality of first holes and a plurality of second holes in a stacked body. The stacked body includes a plurality of first layers and a plurality of second layers. The method includes etching a portion between the second holes next to each other in the stacked body...