ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,392,946, issued on Aug. 19, was assigned to Nippon Sheet Glass Co. Ltd. (Tokyo).

"Optical filter and light-absorbing composition" was invented by Yuichiro Kubo (Tokyo) and Hisao Imai (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical filter (1a) has a thickness of 120 micro metre or less and satisfies the following requirements (i), (ii), (iii), and (iv): (i) an average transmittance in a wavelength range of 450 nm to 600 nm is 74% or more; (ii) a maximum transmittance in a wavelength range of 750 nm to 1080 nm is 1% or less; (iii) an infrared cut-off wavelength being a wavelength which lies in a wavelength range of 550 nm to 700...