ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,305, issued on Sept. 29, was assigned to CANON K.K. (Tokyo).
"Photocurable resin composition, cured product thereof, and method for producing three-dimensional object" was invented by Takayuki Hiratani (Tokyo), Kyohei Wada (Tokyo) and Ryo Ogawa (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A photocurable resin composition includes, as a polyfunctional radical-polymerizable compound (A), a polyfunctional urethane (meth)acrylate (a1) intramolecularly including at least two (meth)acryloyl groups and two urethane groups and including a structure represented by General formula (1) or (2), wherein a content of the polyfunctional urethan...