US Patent Issued to SAGE Electrochromics on Sept. 22 for "Layered substrate with reduced blue dot defect density" (Minnesota Inventors)

ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,990, issued on Sept. 22, was assigned to SAGE Electrochromics Inc. (Faribault, Minn.).

"Layered substrate with reduced blue dot defect density" was invented by Nicholas John Blackmer (Medford, Minn.), Scott David Knapp (Lonsdale, Minn.), Joshua Schrot (Faribault, Minn.) and Yan Wang (Lakeville, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electrochromic (EC) device includes a substrate and a plurality of layers formed on the substrate. The plurality of layers includes an active layer that is lithiated for changing a tint of the EC device. The active layer is lithiated using a deposition process that uses one or more lithium (Li) targets....