US Patent Issued to TOPPAN HOLDINGS on March 17 for "Light control sheets and methods of producing light control sheets" (Japanese Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,598, issued on March 17, was assigned to TOPPAN HOLDINGS INC. (Tokyo).

"Light control sheets and methods of producing light control sheets" was invented by Kimio Horikawa (Taito-ku, Japan), Fumio Oonuma (Taito-ku, Japan), Toshiji Yasuhara (Taito-ku, Japan) and Gen Nakamura (Taito-ku, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A light control sheet is reversibly changeable between transparent and opaque in response to a change in alignment of a liquid crystal compound. The light control sheet includes a light control layer including a polymer resin layer in which voids are dispersed, and a liquid crystal composition containing the liquid c...