ALEXANDRIA, Va., June 25 -- United States Patent no. 12,339,419, issued on June 24, was assigned to Jiangsu Conant Optical Co. Ltd. (Nantong, China) and Shanghai Conant Optical Co. Ltd. (Shanghai).
"Anti-blue light resin lens with refractive index of 1.50 and preparation method thereof" was invented by Chuanbao Wang (Nantong, China), Qingbo Yan (Nantong, China), Linxing Chu (Nantong, China), Yang Li (Nantong, China) and Weidong Du (Nantong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An anti-blue light resin lens with a refractive index of 1.50, including the following components: 100 parts by weight of resin monomer, 0.1-10 parts by weight of anti-blue light powder, 0.1-1 part by weight of initiato...