ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,542,192, issued on Feb. 3, was assigned to UltraMemory Inc. (Tokyo).
"Stacked memory and manufacturing method therefor" was invented by Yasutoshi Yamada (Tokyo), Naoki Ogawa (Tokyo) and Yuji Motoyama (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a stacked memory with an improved yield rate and with which suitable operation timing control is possible. Also provided is a manufacturing method therefor. Provided is a stacked memory 1 obtained by stacking a plurality of memory chips, wherein the memory chips each include a plurality of memory cells, and comprise: a memory unit 20 that is capable of storing data and has a normal memory bloc...