ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,203, issued on Feb. 17, was assigned to Nano and Advanced Materials Institute Ltd. (Hong Kong, Hong Kong).
"Apparatus for automatically extruding and forming a finished concrete channel" was invented by Chi Kwan Adye Kwok (Hong Kong, Hong Kong), Lai Ming Leung (Hong Kong, Hong Kong), Xianrui Chen (Hong Kong, Hong Kong) and Zhihua Xiao (Hong Kong, Hong Kong).
According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for automatically extruding and forming a finished concrete channel in a drainage ditch. The apparatus includes a frame having support rails for positioning the apparatus over a drainage ditch. A concrete-receiving hopper is attached to t...