ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,428, issued on Dec. 30, was assigned to Johnson & Johnson Vision Care Inc. (Jacksonville, Fla.).
"Polymerizable fused tricyclic compounds as absorbers of UV and visible light" was invented by Shivkumar Mahadevan (Jacksonville, Fla.) and Dawn D. Wright (St. Augustine, Fla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Described are polymerizable fused tricyclic compounds of formula I:wherein R1, R2, R3, m, n, t, and rings B, C, and D are as defined herein. The compounds absorb various wavelengths of ultraviolet and/or visible light (such as high energy visible light) and are suitable for incorporation in a variety of products, such as biomedical dev...