US Patent Issued to Yasuhiro Koike, TOSOH on May 12 for "Optical polymer material, optical film, display device, optical polymer material manufacturing method, and optical film manufacturing method" (Japanese Inventors)

ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,142, issued on May 12, was assigned to Yasuhiro Koike (Yokohama, Japan) and TOSOH Corp. (Yamaguchi-ken, Japan).

"Optical polymer material, optical film, display device, optical polymer material manufacturing method, and optical film manufacturing method" was invented by Yasuhiro Koike (Kanagawa, Japan), Yuma Kobayashi (Tokyo) and Kohei Watanabe (Fukuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical polymer material includes an alternating copolymer made of a monomer of a styrene derivative and a monomer of a maleimide derivative, and has a nonlinear property in which the photoelastic coefficient of the optical polymer material decr...