ALEXANDRIA, Va., June 19 -- United States Patent no. 12,334,402, issued on June 17, was assigned to Kateeva Inc. (Newark, Calif.).

"Fabrication of thin-film encapsulation layer for light-emitting device" was invented by Eliyahu Vronsky (Los Altos, Calif.) and Nahid Harjee (Sunnyvale, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An ink jet process is used to deposit a material layer to a desired thickness. Layout data is converted to per-cell grayscale values, each representing ink volume to be locally delivered. The grayscale values are used to generate a halftone pattern to deliver variable ink volume (and thickness) to the substrate. The halftoning provides for a relatively continuous layer (e.g.,...