US Patent Issued to International Business Machines on May 20 for "Read-only memory with vertical transistors" (New York Inventor)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,310,009, issued on May 20, was assigned to International Business Machines Corp. (Armonk, N.Y.).

"Read-only memory with vertical transistors" was invented by Tenko Yamashita (Schenectady, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a read-only memory (ROM) device. The ROM device comprises a substrate that has a plurality of vertical transport field effect transistors (VFETs). The ROM device further comprises an un-activated semiconductor layer provided on each VFET. The un-activated semiconductor layer includes implanted dopants that have not been substantially activated."

The patent was filed on Nov. 11, 2022, under Application No....