ALEXANDRIA, Va., July 15 -- United States Patent no. 12,666,614, issued on June 23, was assigned to Micron Technology Inc. (Boise, Idaho).

"Pillar memory device having a hollow central region and method for manufacturing the same" was invented by Gianpietro Carnevale (Bottanuco, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "Apparatus and methods are disclosed, including memory devices and systems. Example memory devices, systems and methods include memory strings with a conductor channel shell and a low dielectric constant central region. In one example, memory devices, systems and methods include memory strings with a conductor channel shell and a hollow central region."

The patent was filed on Apri...