ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,661, issued on June 3, was assigned to EUTEC NEW MATERIALS TECHNOLOGY (SUZHOU) Co. LTD. (China).
"Polycyclic compound" was invented by Yufeng Zeng (Jiangsu, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Novel polycyclic compounds, synthesis methods and applications thereof are provided. The compound comprise a plurality of carbocyclic and/or heterocyclic structures having at least one group that emits visible light or fluorescence and at least one ultraviolet and/or visible (blue) light absorbing group covalently bonded to provide stability. The compounds can be used as a light conversion agent, dye, pigment, fluorescence agent, ultraviolet li...