US Patent Issued to DONGWOO FINE-CHEM on April 22 for "Optical stack, and manufacturing method for same, and smart window including same, and automobile or windows for building using same" (South Korean Inventors)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,282,220, issued on April 22, was assigned to DONGWOO FINE-CHEM Co. LTD. (Iksan-si, South Korea).

"Optical stack, and manufacturing method for same, and smart window including same, and automobile or windows for building using same" was invented by Hyun-Seong Kim (Iksan-si, South Korea), Jin-Ho Kim (Iksan-si, South Korea), Hyun-Sun Ryu (Iksan-si, South Korea) and Ju-Seob Choi (Iksan-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A variable transmittance optical stack, a manufacturing method therefor, a smart window including the same, and windows for an automobile or a building using the same are proposed."

The patent was filed on Jan. 18...