ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,443,059, issued on Oct. 14, was assigned to STMicroelectronics (Crolles 2) SAS (Crolles, France).

"Planar cell nanoheater design and cell architecture for programmable phase change filters" was invented by Marios Barlas (Grenoble, France), Kirill Shiianov (Grenoble, France), Emmanuel Josse (La Motte Servolex, France) and Stephane Monfray (Eybens, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A phase change filter is formed by an arrangement of dots, wherein each dot is made of a phase change material. A heating layer of electrically conductive material extends under the arrangement of dots. Current passing through the heating layer changes the d...