ALEXANDRIA, Va., March 24 -- United States Patent no. 12,583,173, issued on March 24, was assigned to 3DMATERIALS Co. LTD. (Anyang-si, South Korea).
"Inkjet-type 3D printing method using urea reaction" was invented by Jung Hyun Oh (Daejeon, South Korea), Eun Jeong Hahm (Seoul, South Korea) and Jin A Kim (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides an inkjet-type 3D printing method using a urea reaction capable of quickly printing a large-area 3D structure regardless of a size of a printed matter by printing a 3D structure on a surface of a subject ink applied in units of layers through the urea reaction between a hardener ink and the subject ink applied ...