ALEXANDRIA, Va., March 24 -- United States Patent no. 12,583,948, issued on March 24, was assigned to QUADRATIC 3D INC. (Charlestown, Mass.).

"Photohardenable compositions, methods, and a stabilizer" was invented by Emily M. Arndt (Akron, Ohio) and Samuel N. Sanders (Arlington, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A stabilizer for inclusion in a photohardenable composition comprising a hardenable resin component and a photoinitiator, the stabilizer comprising a stable free radical functionalized polymer, wherein the stabilizer is dispersible or dissolvable in the hardenable resin component. A photohardenable composition including a hardenable resin component, a photoinitiator, and a stabilize...