ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,236,139, issued on Feb. 25, was assigned to Kioxia Corp. (Tokyo).
"Semiconductor memory device" was invented by Akio Sugahara (Yokohama Kanagawa, Japan) and Masahiro Yoshihara (Yokohama Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor memory device includes first and second planes of memory cells, and a control circuit configured to perform a write operation on the memory cells to store first and second bits per memory cell, and to perform a first read operation using a first read voltage to read the first bits and a second read operation using second and third read voltages to read the second bits. In response to a first i...