ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,707, issued on Dec. 30, was assigned to Applied Materials Inc. (Santa Clara, Calif.).

"Total or local thickness variation for optical devices" was invented by Yingdong Luo (Newark, Calif.), Zhengping Yao (Cupertino, Calif.), Daihua Zhang (Los Altos, Calif.), David Alexander Sell (Santa Clara, Calif.), Jingyi Yang (Santa Clara, Calif.), Xiaopei Deng (San Jose, Calif.), Kevin Messer (Mountain View, Calif.), Samarth Bhargava (Saratoga, Calif.), Rami Hourani (Santa Clara, Calif.) and Ludovic Godet (Sunnyvale, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments of the present disclosure generally relate to methods for forming a waveguide. M...