ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,132, issued on May 12, was assigned to Essilor International (Charenton-le-Pont, France).
"Liquid polymerizable allylic compositions comprising lake pigments" was invented by Laurie Marion (Bangkok), Pierre Fromentin (Bangkok) and Tipparat Lertwattanaseri (Bangkok).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a polymerizable liquid composition for the manufacture of an optical article, including: a) at least one allyl monomer or allyl oligomer, b) at least one initiator for the polymerization of the allyl monomer or allyl oligomer, and c) at least one lake pigment including an organic ionic colorant and at least one compound including m...