ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,343, issued on Dec. 9, was assigned to Transitions Optical Ltd. (Tuam, Ireland).
"Mesogen compounds" was invented by Yannian Li (Murrysville, Pa.), Ramaiahgari Reddy (Murrysville, Pa.), Alan M. Grubb (Pittsburgh) and Anil Kumar (Murrysville, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Optionally polymerizable mesogen compounds are disclosed that include a polyvalent non-mesogenic core X to which is bonded three or four separate extensions, where each extension independently includes, in sequence, a linking group -L-, and a mesogen group-[Mesogen]. The mesogen compounds are represented by the following Formula (I),With reference to Formula (I),...