ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,441,823, issued on Oct. 14, was assigned to KURARAY NORITAKE DENTAL INC. (Kurashiki, Japan).
"Resin composition for optical shaping" was invented by Misaki Ito (Niigata, Japan) and Kenji Suzuki (Niigata, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A resin composition for optical shaping comprising: an Alpha,Beta-unsaturated double bond group-containing compound (A) having a ring structure (a) containing a nitrogen atom; a (meth)acrylic acid ester compound (B) having a boiling point of 280deg C. or more at normal pressure, having a carbocyclic group, and having no nitrogen-containing heterocyclic group; a photopolymerization initiator (C); and o...