ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,699,297, issued on Aug. 4, was assigned to Ambilight Inc. (Milpitas, Calif.).

"Electrochromic device with multiple electrochromic layers" was invented by Ke Chen (Lafayette, Ind.) and Jianguo Mei (West Lafayette, Ind.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electrochromic device has a plurality of electrochromic layers stacked sequentially with underlying electrochromic layers crosslinked. The crosslinked electrochromic layers are solution-processable without compromising their optical and electrochromic performances. The disclosed electrochromic device can produce a full-color palette with a minimized intermediate color and show a multicolor c...