ALEXANDRIA, Va., July 14 -- United States Patent no. 12,679,036, issued on July 14, was assigned to PHROZEN TECH Co. LTD. (Hsinchu City, Taiwan) and DONGGUAN CITY PHROZEN TECH Co. LTD. (Dongguan City, China).
"3D printer" was invented by Wei-Chun Lin (Taichung City, Taiwan), Chang Hsien Li (Hsinchu City, Taiwan) and Shang Zheng (Handan City, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A 3D printer includes a frame, a carrier, a nozzle and a detection device. The carrier is fixed to the frame. The nozzle is movably disposed on the frame. The detection device includes a piezoelectric ceramic sheet and a position detector. The piezoelectric ceramic sheet is in contact with the carrier. The position det...