ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,899, issued on Feb. 17, was assigned to CHROMATWIST Ltd. (Wolverhampton, Great Britain).
"Luminescent compounds" was invented by Jon Preece (Wolverhampton, Great Britain), Alex Robinson (Wolverhampton, Great Britain), Owen Jones (Wolverhampton, Great Britain), Michael Butlin (Wolverhampton, Great Britain) and Zania Stamataki (Wolverhampton, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A luminescent compound represented by the following general formula: wherein X represents one of a nitrogen atom, an oxygen atom, a sulphur atom, a phosphorus atom, or a selenium atom; R represents an aromatic group and/or an aliphatic group; p is an in...