US Patent Issued to COLOURSMITH LABS on Dec. 23 for "Composite particle and use thereof in optical filtration" (Canadian Inventors)

ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,562, issued on Dec. 23, was assigned to COLOURSMITH LABS INC. (Halifax, Canada).

"Composite particle and use thereof in optical filtration" was invented by Morrgan Bennett Payne (Halifax, Canada), Raymond Neil Bennett (Halifax, Canada) and Gabrielle Tina Masone (Halifax, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to composite particles comprising porphyrin dye and amphiphilic block copolymer. Further, the present disclosure relates to contact lens comprising the composite particles described herein, and uses of the contact lens and composite particles herein for optical filtration, optionally in the blue lig...